pax_global_header00006660000000000000000000000064136227557530014531gustar00rootroot0000000000000052 comment=8a768bddd5fe50e3f77a9593c9a4479f4cae6eda cstore_fdw-1.7.0/000077500000000000000000000000001362275575300136755ustar00rootroot00000000000000cstore_fdw-1.7.0/.gitignore000066400000000000000000000011401362275575300156610ustar00rootroot00000000000000# ===== # = C = # ===== # Object files *.o *.ko *.obj *.elf # Libraries *.lib *.a # Shared objects (inc. Windows DLLs) *.dll *.so *.so.* *.dylib # Executables *.exe *.app *.i*86 *.x86_64 *.hex # ======== # = Gcov = # ======== # gcc coverage testing tool files *.gcno *.gcda *.gcov # ==================== # = Project-Specific = # ==================== /data/*.cstore /data/*.footer /sql/block_filtering.sql /sql/copyto.sql /sql/create.sql /sql/data_types.sql /sql/load.sql /expected/block_filtering.out /expected/copyto.out /expected/create.out /expected/data_types.out /expected/load.out *.pb-c.* cstore_fdw-1.7.0/.travis.yml000066400000000000000000000016311362275575300160070ustar00rootroot00000000000000sudo: required dist: bionic language: c cache: apt: true directories: - /home/travis/postgresql env: global: - enable_coverage=yes - PG_PRELOAD=cstore_fdw matrix: - PGVERSION=9.3 - PGVERSION=9.4 - PGVERSION=9.5 - PGVERSION=9.6 - PGVERSION=10 - PGVERSION=11 - PGVERSION=12 before_install: - git clone -b v0.7.13 --depth 1 https://github.com/citusdata/tools.git - sudo make -C tools install - setup_apt - nuke_pg install: - sudo apt-get install protobuf-c-compiler - sudo apt-get install libprotobuf-c0-dev - sudo locale-gen da_DK - sudo locale-gen da_DK.utf8 - sudo pip install cpp-coveralls - install_pg - install_custom_pg before_script: - chmod 777 . - chmod 777 data - chmod 666 data/* - config_and_start_cluster script: pg_travis_test after_success: - sudo chmod 666 *.gcda - coveralls --exclude cstore.pb-c.c --exclude cstore.pb-c.h cstore_fdw-1.7.0/LICENSE000066400000000000000000000260731362275575300147120ustar00rootroot00000000000000Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. 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See the License for the specific language governing permissions and limitations under the License.cstore_fdw-1.7.0/META.json000066400000000000000000000021751362275575300153230ustar00rootroot00000000000000{ "name": "cstore_fdw", "abstract": "Columnar Store for PostgreSQL", "description": "PostgreSQL extension which implements a Columnar Store.", "version": "1.7.0", "maintainer": "Murat Tuncer ", "license": "apache_2_0", "provides": { "cstore_fdw": { "abstract": "Foreign Data Wrapper for Columnar Store Tables", "file": "cstore_fdw--1.7.sql", "docfile": "README.md", "version": "1.7.0" } }, "prereqs": { "runtime": { "requires": { "PostgreSQL": "9.3.0" } } }, "resources": { "bugtracker": { "web": "http://github.com/citusdata/cstore_fdw/issues/" }, "repository": { "url": "git://github.com/citusdata/cstore_fdw.git", "web": "https://github.com/citusdata/cstore_fdw/", "type": "git" } }, "generated_by": "Murat Tuncer", "meta-spec": { "version": "1.0.0", "url": "http://pgxn.org/meta/spec.txt" }, "tags": [ "orc", "fdw", "foreign data wrapper", "cstore_fdw", "columnar store" ] } cstore_fdw-1.7.0/Makefile000066400000000000000000000033551362275575300153430ustar00rootroot00000000000000# cstore_fdw/Makefile # # Copyright (c) 2016 Citus Data, Inc. # MODULE_big = cstore_fdw PG_CPPFLAGS = --std=c99 SHLIB_LINK = -lprotobuf-c OBJS = cstore.pb-c.o cstore_fdw.o cstore_writer.o cstore_reader.o \ cstore_metadata_serialization.o cstore_compression.o EXTENSION = cstore_fdw DATA = cstore_fdw--1.7.sql cstore_fdw--1.6--1.7.sql cstore_fdw--1.5--1.6.sql cstore_fdw--1.4--1.5.sql \ cstore_fdw--1.3--1.4.sql cstore_fdw--1.2--1.3.sql cstore_fdw--1.1--1.2.sql \ cstore_fdw--1.0--1.1.sql REGRESS = create load query analyze data_types functions block_filtering drop \ insert copyto alter truncate EXTRA_CLEAN = cstore.pb-c.h cstore.pb-c.c data/*.cstore data/*.cstore.footer \ sql/block_filtering.sql sql/create.sql sql/data_types.sql sql/load.sql \ sql/copyto.sql expected/block_filtering.out expected/create.out \ expected/data_types.out expected/load.out expected/copyto.out ifeq ($(enable_coverage),yes) PG_CPPFLAGS += --coverage SHLIB_LINK += --coverage EXTRA_CLEAN += *.gcno endif UNAME_S := $(shell uname -s) ifeq ($(UNAME_S),Darwin) PG_CPPFLAGS += -I/usr/local/include endif # # Users need to specify their Postgres installation path through pg_config. For # example: /usr/local/pgsql/bin/pg_config or /usr/lib/postgresql/9.3/bin/pg_config # PG_CONFIG = pg_config PGXS := $(shell $(PG_CONFIG) --pgxs) include $(PGXS) ifndef MAJORVERSION MAJORVERSION := $(basename $(VERSION)) endif ifeq (,$(findstring $(MAJORVERSION), 9.3 9.4 9.5 9.6 10 11 12)) $(error PostgreSQL 9.3 to 12 is required to compile this extension) endif cstore.pb-c.c: cstore.proto protoc-c --c_out=. cstore.proto installcheck: remove_cstore_files remove_cstore_files: rm -f data/*.cstore data/*.cstore.footer cstore_fdw-1.7.0/README.md000066400000000000000000000337031362275575300151620ustar00rootroot00000000000000cstore_fdw ========== [![Build Status](https://travis-ci.org/citusdata/cstore_fdw.svg?branch=master)][status] [![Coverage](http://img.shields.io/coveralls/citusdata/cstore_fdw/master.svg)][coverage] Cstore_fdw is an open source columnar store extension for PostgreSQL. Columnar stores provide notable benefits for analytics use cases where data is loaded in batches. Cstore_fdw’s columnar nature delivers performance by only reading relevant data from disk, and it may compress data 6x-10x to reduce space requirements for data archival. Cstore_fdw is developed by [Citus Data](https://www.citusdata.com) and can be used in combination with [Citus](https://github.com/citusdata/citus), a postgres extension that intelligently distributes your data and queries across many nodes so your database can scale and your queries are fast. If you have any questions about how Citus can help you scale or how to use Citus in combination with cstore_fdw, [please let us know](https://www.citusdata.com/about/contact_us/). Join the [Mailing List][mailing-list] to stay on top of the latest developments for Cstore_fdw. Introduction ------------ This extension uses a format for its data layout that is inspired by ORC, the Optimized Row Columnar format. Like ORC, the cstore format improves upon RCFile developed at Facebook, and brings the following benefits: * Compression: Reduces in-memory and on-disk data size by 2-4x. Can be extended to support different codecs. * Column projections: Only reads column data relevant to the query. Improves performance for I/O bound queries. * Skip indexes: Stores min/max statistics for row groups, and uses them to skip over unrelated rows. Further, we used the Postgres foreign data wrapper APIs and type representations with this extension. This brings: * Support for 40+ Postgres data types. The user can also create new types and use them. * Statistics collection. PostgreSQL's query optimizer uses these stats to evaluate different query plans and pick the best one. * Simple setup. Create foreign table and copy data. Run SQL. Building -------- cstore\_fdw depends on protobuf-c for serializing and deserializing table metadata. So we need to install these packages first: # Fedora 17+, CentOS, and Amazon Linux sudo yum install protobuf-c-devel # Ubuntu 10.4+ sudo apt-get install protobuf-c-compiler sudo apt-get install libprotobuf-c0-dev # Ubuntu 18.4+ sudo apt-get install protobuf-c-compiler sudo apt-get install libprotobuf-c-dev # Mac OS X brew install protobuf-c **Note.** In CentOS 5, 6, and 7, you may need to install or update EPEL 5, 6, or 7 repositories. See [this page](https://support.rackspace.com/how-to/install-epel-and-additional-repositories-on-centos-and-red-hat/) for instructions. **Note.** In Amazon Linux, the EPEL repository is installed by default, but not enabled. See [these instructions](http://aws.amazon.com/amazon-linux-ami/faqs/#epel) for how to enable it. Once you have protobuf-c installed on your machine, you are ready to build cstore\_fdw. For this, you need to include the pg\_config directory path in your make command. This path is typically the same as your PostgreSQL installation's bin/ directory path. For example: PATH=/usr/local/pgsql/bin/:$PATH make sudo PATH=/usr/local/pgsql/bin/:$PATH make install **Note.** cstore_fdw requires PostgreSQL 9.3, 9.4, 9.5, 9.6, 10 or 11. It doesn't support earlier versions of PostgreSQL. Usage ----- Before using cstore\_fdw, you need to add it to ```shared_preload_libraries``` in your ```postgresql.conf``` and restart Postgres: shared_preload_libraries = 'cstore_fdw' # (change requires restart) The following parameters can be set on a cstore foreign table object. * filename (optional): The absolute path to the location for storing table data. If you don't specify the filename option, cstore\_fdw will automatically choose the $PGDATA/cstore\_fdw directory to store the files. If specified the value of this parameter will be used as a prefix for all files created to store table data. For example, the value ```/cstore_fdw/my_table``` could result in the files ```/cstore_fdw/my_table``` and ```/cstore_fdw/my_table.footer``` being used to manage table data. * compression (optional): The compression used for compressing value streams. Valid options are ```none``` and ```pglz```. The default is ```none```. * stripe\_row\_count (optional): Number of rows per stripe. The default is ```150000```. Reducing this decreases the amount memory used for loading data and querying, but also decreases the performance. * block\_row\_count (optional): Number of rows per column block. The default is ```10000```. cstore\_fdw compresses, creates skip indexes, and reads from disk at the block granularity. Increasing this value helps with compression and results in fewer reads from disk. However, higher values also reduce the probability of skipping over unrelated row blocks. To load or append data into a cstore table, you have two options: * You can use the [```COPY``` command][copy-command] to load or append data from a file, a program, or STDIN. * You can use the ```INSERT INTO cstore_table SELECT ...``` syntax to load or append data from another table. You can use the [```ANALYZE``` command][analyze-command] to collect statistics about the table. These statistics help the query planner to help determine the most efficient execution plan for each query. **Note.** We currently don't support updating table using DELETE, and UPDATE commands. We also don't support single row inserts. Updating from earlier versions to 1.7 --------------------------------------- To update an existing cstore_fdw installation from versions earlier than 1.6 you can take the following steps: * Download and install cstore_fdw version 1.6 using instructions from the "Building" section, * Restart the PostgreSQL server, * Run ```ALTER EXTENSION cstore_fdw UPDATE;``` Example ------- As an example, we demonstrate loading and querying data to/from a column store table from scratch here. Let's start with downloading and decompressing the data files. wget http://examples.citusdata.com/customer_reviews_1998.csv.gz wget http://examples.citusdata.com/customer_reviews_1999.csv.gz gzip -d customer_reviews_1998.csv.gz gzip -d customer_reviews_1999.csv.gz Then, let's log into Postgres, and run the following commands to create a column store foreign table: ```SQL -- load extension first time after install CREATE EXTENSION cstore_fdw; -- create server object CREATE SERVER cstore_server FOREIGN DATA WRAPPER cstore_fdw; -- create foreign table CREATE FOREIGN TABLE customer_reviews ( customer_id TEXT, review_date DATE, review_rating INTEGER, review_votes INTEGER, review_helpful_votes INTEGER, product_id CHAR(10), product_title TEXT, product_sales_rank BIGINT, product_group TEXT, product_category TEXT, product_subcategory TEXT, similar_product_ids CHAR(10)[] ) SERVER cstore_server OPTIONS(compression 'pglz'); ``` Next, we load data into the table: ```SQL COPY customer_reviews FROM '/home/user/customer_reviews_1998.csv' WITH CSV; COPY customer_reviews FROM '/home/user/customer_reviews_1999.csv' WITH CSV; ``` **Note.** If you are getting ```ERROR: cannot copy to foreign table "customer_reviews"``` when trying to run the COPY commands, double check that you have added cstore\_fdw to ```shared_preload_libraries``` in ```postgresql.conf``` and restarted Postgres. Next, we collect data distribution statistics about the table. This is optional, but usually very helpful: ```SQL ANALYZE customer_reviews; ``` Finally, let's run some example SQL queries on the column store table. ```SQL -- Find all reviews a particular customer made on the Dune series in 1998. SELECT customer_id, review_date, review_rating, product_id, product_title FROM customer_reviews WHERE customer_id ='A27T7HVDXA3K2A' AND product_title LIKE '%Dune%' AND review_date >= '1998-01-01' AND review_date <= '1998-12-31'; -- Do we have a correlation between a book's title's length and its review ratings? SELECT width_bucket(length(product_title), 1, 50, 5) title_length_bucket, round(avg(review_rating), 2) AS review_average, count(*) FROM customer_reviews WHERE product_group = 'Book' GROUP BY title_length_bucket ORDER BY title_length_bucket; ``` Usage with Citus ---------------- The example above illustrated how to load data into a PostgreSQL database running on a single host. However, sometimes your data is too large to analyze effectively on a single host. Citus is a product built by Citus Data that allows you to run a distributed PostgreSQL database to analyze your data using the power of multiple hosts. You can easily install and run other PostgreSQL extensions and foreign data wrappers—including cstore_fdw—alongside Citus. You can create a cstore_fdw table and distribute it using the ```master_create_distributed_table()``` UDF just like any other table. You can load data using the ```copy``` command as you would do in single node PostgreSQL. Using Skip Indexes ------------------ cstore_fdw partitions each column into multiple blocks. Skip indexes store minimum and maximum values for each of these blocks. While scanning the table, if min/max values of the block contradict the WHERE clause, then the block is completely skipped. This way, the query processes less data and hence finishes faster. To use skip indexes more efficiently, you should load the data after sorting it on a column that is commonly used in the WHERE clause. This ensures that there is a minimum overlap between blocks and the chance of them being skipped is higher. In practice, the data generally has an inherent dimension (for example a time field) on which it is naturally sorted. Usually, the queries also have a filter clause on that column (for example you want to query only the last week's data), and hence you don't need to sort the data in such cases. Uninstalling cstore_fdw ----------------------- Before uninstalling the extension, first you need to drop all the cstore tables: postgres=# DROP FOREIGN TABLE cstore_table_1; ... postgres=# DROP FOREIGN TABLE cstore_table_n; Then, you should drop the cstore server and extension: postgres=# DROP SERVER cstore_server; postgres=# DROP EXTENSION cstore_fdw; cstore\_fdw automatically creates some directories inside the PostgreSQL's data directory to store its files. To remove them, you can run: $ rm -rf $PGDATA/cstore_fdw Then, you should remove cstore\_fdw from ```shared_preload_libraries``` in your ```postgresql.conf```: shared_preload_libraries = '' # (change requires restart) Finally, to uninstall the extension you can run the following command in the extension's source code directory. This will clean up all the files copied during the installation: $ sudo PATH=/usr/local/pgsql/bin/:$PATH make uninstall Changeset --------- ### Version 1.7.0 * (Fix) Add support for PostgreSQL 12 * (Fix) Support count(t.*) from t type queries * (Fix) Build failures for MacOS 10.14+ * (Fix) Make foreign scan parallel safe * (Fix) Add support for PostgreSQL 11 COPY ### Version 1.6.2 * (Fix) Add support for PostgreSQL 11 ### Version 1.6.1 * (Fix) Fix crash during truncate (Cstore crashing server when enabled, not used) * (Fix) No such file or directory warning when attempting to drop database ### Version 1.6 * (Feature) Added support for PostgreSQL 10. * (Fix) Removed table files when a schema, extension or database is dropped. * (Fix) Removed unused code fragments. * (Fix) Fixed incorrect initialization of stripe buffers. * (Fix) Checked user access rights when executing truncate. * (Fix) Made copy command cancellable. * (Fix) Fixed namespace issue regarding drop table. ### Version 1.5.1 * (Fix) Verify cstore_fdw server on CREATE FOREIGN TABLE command ### Version 1.5 * (Feature) Added support for PostgreSQL 9.6. * (Fix) Removed table data when cstore_fdw table is indirectly dropped. * (Fix) Removed unused code fragments. * (Fix) Fixed column selection logic to return columns used in expressions. * (Fix) Prevented alter table command from changinf column type to incompatible types. ### Version 1.4.1 * (Fix) Compatibility fix for Citus [copy command][copy-command]. ### Version 1.4 * (Feature) Added support for ```TRUNCATE TABLE``` * (Fix) Added support for PostgreSQL 9.5 ### Version 1.3 * (Feature) Added support for ```ALTER TABLE ADD COLUMN``` and ```ALTER TABLE DROP COLUMN```. * (Feature) Added column list support in ```COPY FROM```. * (Optimization) Improve row count estimation, which results in better plans. * (Fix) Fix the deadlock issue during concurrent inserts. * (Fix) Return correct result when using whole row references. ### Version 1.2 * (Feature) Added support for ```COPY TO```. * (Feature) Added support for ```INSERT INTO cstore_table SELECT ...```. * (Optimization) Improved memory usage. * (Fix) Dropping multiple cstore tables in a single command cleans-up files of all them. ### Version 1.1 * (Feature) Make filename option optional, and use a default directory inside $PGDATA to manage cstore tables. * (Feature) Automatically delete files on DROP FOREIGN TABLE. * (Fix) Return empty table if no data has been loaded. Previously, cstore_fdw errored out. * (Fix) Fix overestimating relation column counts when planning. * (Feature) Added cstore\_table\_size(tablename) for getting the size of a cstore table in bytes. Copyright --------- Copyright (c) 2017 Citus Data, Inc. This module is free software; you can redistribute it and/or modify it under the Apache v2.0 License. For all types of questions and comments about the wrapper, please contact us at engage @ citusdata.com. [status]: https://travis-ci.org/citusdata/cstore_fdw [mailing-list]: https://groups.google.com/forum/#!forum/cstore-users [coverage]: https://coveralls.io/r/citusdata/cstore_fdw [copy-command]: http://www.postgresql.org/docs/current/static/sql-copy.html [analyze-command]: http://www.postgresql.org/docs/current/static/sql-analyze.html cstore_fdw-1.7.0/TODO.md000066400000000000000000000030311362275575300147610ustar00rootroot00000000000000To see the list of features and bug-fixes planned for next releases, see our [development roadmap][roadmap]. Requested Features ------------------ * Improve write performance * Improve read performance * Add checksum logic * Add new compression methods * Enable INSERT/DELETE/UPDATE * Enable users other than superuser to safely create columnar tables (permissions) * Transactional semantics * Add config setting to make pg\_fsync() optional Known Issues ------------ * Copy command ignores NOT NULL constraints. * Planning functions don't take into account average column width. * Planning functions don't correctly take into account block skipping benefits. * On 32-bit platforms, when file size is outside the 32-bit signed range, EXPLAIN command prints incorrect file size. * If two different columnar tables are configured to point to the same file, writes to the underlying file aren't protected from each other. * When a data load is in progress, concurrent reads on the table overestimate the page count. * We have a minor memory leak in CStoreEndWrite. We need to also free the comparisonFunctionArray. * block\_filtering test fails on Ubuntu because the "da\_DK" locale is not enabled by default. * We don't yet incorporate the compression method's impact on disk I/O into cost estimates. * CitusDB integration errors: * Concurrent staging cstore\_fdw tables doesn't work. * Setting a default value for column with ALTER TABLE has limited support for existing rows. [roadmap]: https://github.com/citusdata/cstore_fdw/wiki/Roadmap cstore_fdw-1.7.0/cstore.proto000066400000000000000000000023151362275575300162620ustar00rootroot00000000000000syntax = "proto2"; package protobuf; enum CompressionType { // Values should match with the corresponding struct in cstore_fdw.h NONE = 0; PG_LZ = 1; }; message ColumnBlockSkipNode { optional uint64 rowCount = 1; optional bytes minimumValue = 2; optional bytes maximumValue = 3; optional uint64 valueBlockOffset = 4; optional uint64 valueLength = 5; optional CompressionType valueCompressionType = 6; optional uint64 existsBlockOffset = 7; optional uint64 existsLength = 8; } message ColumnBlockSkipList { repeated ColumnBlockSkipNode blockSkipNodeArray = 1; } message StripeFooter { repeated uint64 skipListSizeArray = 1; repeated uint64 existsSizeArray = 2; repeated uint64 valueSizeArray = 3; } message StripeMetadata { optional uint64 fileOffset = 1; optional uint64 skipListLength = 2; optional uint64 dataLength = 3; optional uint64 footerLength = 4; } message TableFooter { repeated StripeMetadata stripeMetadataArray = 1; optional uint32 blockRowCount = 2; } message PostScript { optional uint64 tableFooterLength = 1; optional uint64 versionMajor = 2; optional uint64 versionMinor = 3; // Leave this last in the record optional string magicNumber = 8000; } cstore_fdw-1.7.0/cstore_compression.c000066400000000000000000000115561362275575300177710ustar00rootroot00000000000000/*------------------------------------------------------------------------- * * cstore_compression.c * * This file contains compression/decompression functions definitions * used in cstore_fdw. * * Copyright (c) 2016, Citus Data, Inc. * * $Id$ * *------------------------------------------------------------------------- */ #include "postgres.h" #include "cstore_fdw.h" #if PG_VERSION_NUM >= 90500 #include "common/pg_lzcompress.h" #else #include "utils/pg_lzcompress.h" #endif #if PG_VERSION_NUM >= 90500 /* * The information at the start of the compressed data. This decription is taken * from pg_lzcompress in pre-9.5 version of PostgreSQL. */ typedef struct CStoreCompressHeader { int32 vl_len_; /* varlena header (do not touch directly!) */ int32 rawsize; } CStoreCompressHeader; /* * Utilities for manipulation of header information for compressed data */ #define CSTORE_COMPRESS_HDRSZ ((int32) sizeof(CStoreCompressHeader)) #define CSTORE_COMPRESS_RAWSIZE(ptr) (((CStoreCompressHeader *) (ptr))->rawsize) #define CSTORE_COMPRESS_RAWDATA(ptr) (((char *) (ptr)) + CSTORE_COMPRESS_HDRSZ) #define CSTORE_COMPRESS_SET_RAWSIZE(ptr, len) (((CStoreCompressHeader *) (ptr))->rawsize = (len)) #else #define CSTORE_COMPRESS_HDRSZ (0) #define CSTORE_COMPRESS_RAWSIZE(ptr) (PGLZ_RAW_SIZE((PGLZ_Header *) buffer->data)) #define CSTORE_COMPRESS_RAWDATA(ptr) (((PGLZ_Header *) (ptr))) #define CSTORE_COMPRESS_SET_RAWSIZE(ptr, len) (((CStoreCompressHeader *) (ptr))->rawsize = (len)) #endif /* * CompressBuffer compresses the given buffer with the given compression type * outputBuffer enlarged to contain compressed data. The function returns true * if compression is done, returns false if compression is not done. * outputBuffer is valid only if the function returns true. */ bool CompressBuffer(StringInfo inputBuffer, StringInfo outputBuffer, CompressionType compressionType) { uint64 maximumLength = PGLZ_MAX_OUTPUT(inputBuffer->len) + CSTORE_COMPRESS_HDRSZ; bool compressionResult = false; #if PG_VERSION_NUM >= 90500 int32 compressedByteCount = 0; #endif if (compressionType != COMPRESSION_PG_LZ) { return false; } resetStringInfo(outputBuffer); enlargeStringInfo(outputBuffer, maximumLength); #if PG_VERSION_NUM >= 90500 compressedByteCount = pglz_compress((const char *) inputBuffer->data, inputBuffer->len, CSTORE_COMPRESS_RAWDATA(outputBuffer->data), PGLZ_strategy_always); if (compressedByteCount >= 0) { CSTORE_COMPRESS_SET_RAWSIZE(outputBuffer->data, inputBuffer->len); SET_VARSIZE_COMPRESSED(outputBuffer->data, compressedByteCount + CSTORE_COMPRESS_HDRSZ); compressionResult = true; } #else compressionResult = pglz_compress(inputBuffer->data, inputBuffer->len, CSTORE_COMPRESS_RAWDATA(outputBuffer->data), PGLZ_strategy_always); #endif if (compressionResult) { outputBuffer->len = VARSIZE(outputBuffer->data); } return compressionResult; } /* * DecompressBuffer decompresses the given buffer with the given compression * type. This function returns the buffer as-is when no compression is applied. */ StringInfo DecompressBuffer(StringInfo buffer, CompressionType compressionType) { StringInfo decompressedBuffer = NULL; Assert(compressionType == COMPRESSION_NONE || compressionType == COMPRESSION_PG_LZ); if (compressionType == COMPRESSION_NONE) { /* in case of no compression, return buffer */ decompressedBuffer = buffer; } else if (compressionType == COMPRESSION_PG_LZ) { uint32 compressedDataSize = VARSIZE(buffer->data) - CSTORE_COMPRESS_HDRSZ; uint32 decompressedDataSize = CSTORE_COMPRESS_RAWSIZE(buffer->data); char *decompressedData = NULL; #if PG_VERSION_NUM >= 90500 int32 decompressedByteCount = 0; #endif if (compressedDataSize + CSTORE_COMPRESS_HDRSZ != buffer->len) { ereport(ERROR, (errmsg("cannot decompress the buffer"), errdetail("Expected %u bytes, but received %u bytes", compressedDataSize, buffer->len))); } decompressedData = palloc0(decompressedDataSize); #if PG_VERSION_NUM >= 90500 #if PG_VERSION_NUM >= 120000 decompressedByteCount = pglz_decompress(CSTORE_COMPRESS_RAWDATA(buffer->data), compressedDataSize, decompressedData, decompressedDataSize, true); #else decompressedByteCount = pglz_decompress(CSTORE_COMPRESS_RAWDATA(buffer->data), compressedDataSize, decompressedData, decompressedDataSize); #endif if (decompressedByteCount < 0) { ereport(ERROR, (errmsg("cannot decompress the buffer"), errdetail("compressed data is corrupted"))); } #else pglz_decompress((PGLZ_Header *) buffer->data, decompressedData); #endif decompressedBuffer = palloc0(sizeof(StringInfoData)); decompressedBuffer->data = decompressedData; decompressedBuffer->len = decompressedDataSize; decompressedBuffer->maxlen = decompressedDataSize; } return decompressedBuffer; } cstore_fdw-1.7.0/cstore_fdw--1.0--1.1.sql000066400000000000000000000020531362275575300175000ustar00rootroot00000000000000/* cstore_fdw/cstore_fdw--1.0--1.1.sql */ -- complain if script is sourced in psql, rather than via ALTER EXTENSION UPDATE \echo Use "ALTER EXTENSION cstore_fdw UPDATE TO '1.1'" to load this file. \quit CREATE FUNCTION cstore_ddl_event_end_trigger() RETURNS event_trigger AS 'MODULE_PATHNAME' LANGUAGE C STRICT; CREATE EVENT TRIGGER cstore_ddl_event_end ON ddl_command_end EXECUTE PROCEDURE cstore_ddl_event_end_trigger(); CREATE FUNCTION cstore_table_size(relation regclass) RETURNS bigint AS 'MODULE_PATHNAME' LANGUAGE C STRICT; -- cstore_fdw creates directories to store files for tables with automatically -- determined filename during the CREATE SERVER statement. Since this feature -- was newly added in v1.1, servers created with v1.0 did not create them. So, -- we create a server with v1.1 to ensure that the required directories are -- created to allow users to create automatically managed tables with old servers. CREATE SERVER cstore_server_for_updating_1_0_to_1_1 FOREIGN DATA WRAPPER cstore_fdw; DROP SERVER cstore_server_for_updating_1_0_to_1_1; cstore_fdw-1.7.0/cstore_fdw--1.1--1.2.sql000066400000000000000000000001401362275575300174750ustar00rootroot00000000000000/* cstore_fdw/cstore_fdw--1.1--1.2.sql */ -- No new functions or definitions were added in 1.2 cstore_fdw-1.7.0/cstore_fdw--1.2--1.3.sql000066400000000000000000000001401362275575300174770ustar00rootroot00000000000000/* cstore_fdw/cstore_fdw--1.2--1.3.sql */ -- No new functions or definitions were added in 1.3 cstore_fdw-1.7.0/cstore_fdw--1.3--1.4.sql000066400000000000000000000001401362275575300175010ustar00rootroot00000000000000/* cstore_fdw/cstore_fdw--1.3--1.4.sql */ -- No new functions or definitions were added in 1.4 cstore_fdw-1.7.0/cstore_fdw--1.4--1.5.sql000066400000000000000000000011341362275575300175070ustar00rootroot00000000000000/* cstore_fdw/cstore_fdw--1.4--1.5.sql */ CREATE FUNCTION cstore_clean_table_resources(oid) RETURNS void AS 'MODULE_PATHNAME' LANGUAGE C STRICT; CREATE OR REPLACE FUNCTION cstore_drop_trigger() RETURNS event_trigger LANGUAGE plpgsql AS $csdt$ DECLARE v_obj record; BEGIN FOR v_obj IN SELECT * FROM pg_event_trigger_dropped_objects() LOOP IF v_obj.object_type NOT IN ('table', 'foreign table') THEN CONTINUE; END IF; PERFORM cstore_clean_table_resources(v_obj.objid); END LOOP; END; $csdt$; CREATE EVENT TRIGGER cstore_drop_event ON SQL_DROP EXECUTE PROCEDURE cstore_drop_trigger(); cstore_fdw-1.7.0/cstore_fdw--1.5--1.6.sql000066400000000000000000000006341362275575300175150ustar00rootroot00000000000000/* cstore_fdw/cstore_fdw--1.5--1.6.sql */ CREATE OR REPLACE FUNCTION cstore_drop_trigger() RETURNS event_trigger LANGUAGE plpgsql AS $csdt$ DECLARE v_obj record; BEGIN FOR v_obj IN SELECT * FROM pg_event_trigger_dropped_objects() LOOP IF v_obj.object_type NOT IN ('table', 'foreign table') THEN CONTINUE; END IF; PERFORM public.cstore_clean_table_resources(v_obj.objid); END LOOP; END; $csdt$; cstore_fdw-1.7.0/cstore_fdw--1.6--1.7.sql000066400000000000000000000001401362275575300175070ustar00rootroot00000000000000/* cstore_fdw/cstore_fdw--1.6--1.6.sql */ -- No new functions or definitions were added in 1.7 cstore_fdw-1.7.0/cstore_fdw--1.7.sql000066400000000000000000000025651362275575300171450ustar00rootroot00000000000000/* cstore_fdw/cstore_fdw--1.7.sql */ -- complain if script is sourced in psql, rather than via CREATE EXTENSION \echo Use "CREATE EXTENSION cstore_fdw" to load this file. \quit CREATE FUNCTION cstore_fdw_handler() RETURNS fdw_handler AS 'MODULE_PATHNAME' LANGUAGE C STRICT; CREATE FUNCTION cstore_fdw_validator(text[], oid) RETURNS void AS 'MODULE_PATHNAME' LANGUAGE C STRICT; CREATE FOREIGN DATA WRAPPER cstore_fdw HANDLER cstore_fdw_handler VALIDATOR cstore_fdw_validator; CREATE FUNCTION cstore_ddl_event_end_trigger() RETURNS event_trigger AS 'MODULE_PATHNAME' LANGUAGE C STRICT; CREATE EVENT TRIGGER cstore_ddl_event_end ON ddl_command_end EXECUTE PROCEDURE cstore_ddl_event_end_trigger(); CREATE FUNCTION cstore_table_size(relation regclass) RETURNS bigint AS 'MODULE_PATHNAME' LANGUAGE C STRICT; CREATE OR REPLACE FUNCTION cstore_clean_table_resources(oid) RETURNS void AS 'MODULE_PATHNAME' LANGUAGE C STRICT; CREATE OR REPLACE FUNCTION cstore_drop_trigger() RETURNS event_trigger LANGUAGE plpgsql AS $csdt$ DECLARE v_obj record; BEGIN FOR v_obj IN SELECT * FROM pg_event_trigger_dropped_objects() LOOP IF v_obj.object_type NOT IN ('table', 'foreign table') THEN CONTINUE; END IF; PERFORM public.cstore_clean_table_resources(v_obj.objid); END LOOP; END; $csdt$; CREATE EVENT TRIGGER cstore_drop_event ON SQL_DROP EXECUTE PROCEDURE cstore_drop_trigger(); cstore_fdw-1.7.0/cstore_fdw.c000066400000000000000000002173001362275575300162030ustar00rootroot00000000000000/*------------------------------------------------------------------------- * * cstore_fdw.c * * This file contains the function definitions for scanning, analyzing, and * copying into cstore_fdw foreign tables. Note that this file uses the API * provided by cstore_reader and cstore_writer for reading and writing cstore * files. * * Copyright (c) 2016, Citus Data, Inc. * * $Id$ * *------------------------------------------------------------------------- */ #include "postgres.h" #include "cstore_fdw.h" #include "cstore_version_compat.h" #include #include #include #include "access/htup_details.h" #include "access/reloptions.h" #include "access/sysattr.h" #include "access/tuptoaster.h" #include "catalog/namespace.h" #include "catalog/pg_foreign_table.h" #include "catalog/pg_namespace.h" #include "commands/copy.h" #include "commands/dbcommands.h" #include "commands/defrem.h" #include "commands/event_trigger.h" #include "commands/explain.h" #include "commands/extension.h" #include "commands/vacuum.h" #include "foreign/fdwapi.h" #include "foreign/foreign.h" #include "miscadmin.h" #include "nodes/makefuncs.h" #include "optimizer/cost.h" #include "optimizer/pathnode.h" #include "optimizer/planmain.h" #include "optimizer/restrictinfo.h" #if PG_VERSION_NUM >= 120000 #include "access/heapam.h" #include "access/tableam.h" #include "executor/tuptable.h" #include "optimizer/optimizer.h" #else #include "optimizer/var.h" #endif #include "parser/parser.h" #include "parser/parsetree.h" #include "parser/parse_coerce.h" #include "parser/parse_type.h" #include "storage/fd.h" #include "tcop/utility.h" #include "utils/builtins.h" #include "utils/fmgroids.h" #include "utils/memutils.h" #include "utils/lsyscache.h" #include "utils/rel.h" #if PG_VERSION_NUM >= 120000 #include "utils/snapmgr.h" #else #include "utils/tqual.h" #endif /* local functions forward declarations */ #if PG_VERSION_NUM >= 100000 static void CStoreProcessUtility(PlannedStmt *plannedStatement, const char *queryString, ProcessUtilityContext context, ParamListInfo paramListInfo, QueryEnvironment *queryEnvironment, DestReceiver *destReceiver, char *completionTag); #else static void CStoreProcessUtility(Node *parseTree, const char *queryString, ProcessUtilityContext context, ParamListInfo paramListInfo, DestReceiver *destReceiver, char *completionTag); #endif static bool CopyCStoreTableStatement(CopyStmt* copyStatement); static void CheckSuperuserPrivilegesForCopy(const CopyStmt* copyStatement); static void CStoreProcessCopyCommand(CopyStmt *copyStatement, const char *queryString, char *completionTag); static uint64 CopyIntoCStoreTable(const CopyStmt *copyStatement, const char *queryString); static uint64 CopyOutCStoreTable(CopyStmt* copyStatement, const char* queryString); static void CStoreProcessAlterTableCommand(AlterTableStmt *alterStatement); static List * DroppedCStoreFilenameList(DropStmt *dropStatement); static List * FindCStoreTables(List *tableList); static List * OpenRelationsForTruncate(List *cstoreTableList); static void TruncateCStoreTables(List *cstoreRelationList); static void DeleteCStoreTableFiles(char *filename); static void InitializeCStoreTableFile(Oid relationId, Relation relation); static bool CStoreTable(Oid relationId); static bool CStoreServer(ForeignServer *server); static bool DistributedTable(Oid relationId); static bool DistributedWorkerCopy(CopyStmt *copyStatement); static void CreateCStoreDatabaseDirectory(Oid databaseOid); static bool DirectoryExists(StringInfo directoryName); static void CreateDirectory(StringInfo directoryName); static void RemoveCStoreDatabaseDirectory(Oid databaseOid); static StringInfo OptionNamesString(Oid currentContextId); static HeapTuple GetSlotHeapTuple(TupleTableSlot *tts); static CStoreFdwOptions * CStoreGetOptions(Oid foreignTableId); static char * CStoreGetOptionValue(Oid foreignTableId, const char *optionName); static void ValidateForeignTableOptions(char *filename, char *compressionTypeString, char *stripeRowCountString, char *blockRowCountString); static char * CStoreDefaultFilePath(Oid foreignTableId); static CompressionType ParseCompressionType(const char *compressionTypeString); static void CStoreGetForeignRelSize(PlannerInfo *root, RelOptInfo *baserel, Oid foreignTableId); static void CStoreGetForeignPaths(PlannerInfo *root, RelOptInfo *baserel, Oid foreignTableId); #if PG_VERSION_NUM >= 90500 static ForeignScan * CStoreGetForeignPlan(PlannerInfo *root, RelOptInfo *baserel, Oid foreignTableId, ForeignPath *bestPath, List *targetList, List *scanClauses, Plan *outerPlan); #else static ForeignScan * CStoreGetForeignPlan(PlannerInfo *root, RelOptInfo *baserel, Oid foreignTableId, ForeignPath *bestPath, List *targetList, List *scanClauses); #endif static double TupleCountEstimate(RelOptInfo *baserel, const char *filename); static BlockNumber PageCount(const char *filename); static List * ColumnList(RelOptInfo *baserel, Oid foreignTableId); static void CStoreExplainForeignScan(ForeignScanState *scanState, ExplainState *explainState); static void CStoreBeginForeignScan(ForeignScanState *scanState, int executorFlags); static TupleTableSlot * CStoreIterateForeignScan(ForeignScanState *scanState); static void CStoreEndForeignScan(ForeignScanState *scanState); static void CStoreReScanForeignScan(ForeignScanState *scanState); static bool CStoreAnalyzeForeignTable(Relation relation, AcquireSampleRowsFunc *acquireSampleRowsFunc, BlockNumber *totalPageCount); static int CStoreAcquireSampleRows(Relation relation, int logLevel, HeapTuple *sampleRows, int targetRowCount, double *totalRowCount, double *totalDeadRowCount); static List * CStorePlanForeignModify(PlannerInfo *plannerInfo, ModifyTable *plan, Index resultRelation, int subplanIndex); static void CStoreBeginForeignModify(ModifyTableState *modifyTableState, ResultRelInfo *relationInfo, List *fdwPrivate, int subplanIndex, int executorflags); static void CStoreBeginForeignInsert(ModifyTableState *modifyTableState, ResultRelInfo *relationInfo); static TupleTableSlot * CStoreExecForeignInsert(EState *executorState, ResultRelInfo *relationInfo, TupleTableSlot *tupleSlot, TupleTableSlot *planSlot); static void CStoreEndForeignModify(EState *executorState, ResultRelInfo *relationInfo); static void CStoreEndForeignInsert(EState *executorState, ResultRelInfo *relationInfo); #if PG_VERSION_NUM >= 90600 static bool CStoreIsForeignScanParallelSafe(PlannerInfo *root, RelOptInfo *rel, RangeTblEntry *rte); #endif /* declarations for dynamic loading */ PG_MODULE_MAGIC; PG_FUNCTION_INFO_V1(cstore_ddl_event_end_trigger); PG_FUNCTION_INFO_V1(cstore_table_size); PG_FUNCTION_INFO_V1(cstore_fdw_handler); PG_FUNCTION_INFO_V1(cstore_fdw_validator); PG_FUNCTION_INFO_V1(cstore_clean_table_resources); /* saved hook value in case of unload */ static ProcessUtility_hook_type PreviousProcessUtilityHook = NULL; /* * _PG_init is called when the module is loaded. In this function we save the * previous utility hook, and then install our hook to pre-intercept calls to * the copy command. */ void _PG_init(void) { PreviousProcessUtilityHook = ProcessUtility_hook; ProcessUtility_hook = CStoreProcessUtility; } /* * _PG_fini is called when the module is unloaded. This function uninstalls the * extension's hooks. */ void _PG_fini(void) { ProcessUtility_hook = PreviousProcessUtilityHook; } /* * cstore_ddl_event_end_trigger is the event trigger function which is called on * ddl_command_end event. This function creates required directories after the * CREATE SERVER statement and valid data and footer files after the CREATE FOREIGN * TABLE statement. */ Datum cstore_ddl_event_end_trigger(PG_FUNCTION_ARGS) { EventTriggerData *triggerData = NULL; Node *parseTree = NULL; /* error if event trigger manager did not call this function */ if (!CALLED_AS_EVENT_TRIGGER(fcinfo)) { ereport(ERROR, (errmsg("trigger not fired by event trigger manager"))); } triggerData = (EventTriggerData *) fcinfo->context; parseTree = triggerData->parsetree; if (nodeTag(parseTree) == T_CreateForeignServerStmt) { CreateForeignServerStmt *serverStatement = (CreateForeignServerStmt *) parseTree; char *foreignWrapperName = serverStatement->fdwname; if (strncmp(foreignWrapperName, CSTORE_FDW_NAME, NAMEDATALEN) == 0) { CreateCStoreDatabaseDirectory(MyDatabaseId); } } else if (nodeTag(parseTree) == T_CreateForeignTableStmt) { CreateForeignTableStmt *createStatement = (CreateForeignTableStmt *) parseTree; char *serverName = createStatement->servername; bool missingOK = false; ForeignServer *server = GetForeignServerByName(serverName, missingOK); if (CStoreServer(server)) { Oid relationId = RangeVarGetRelid(createStatement->base.relation, AccessShareLock, false); Relation relation = heap_open(relationId, AccessExclusiveLock); /* * Make sure database directory exists before creating a table. * This is necessary when a foreign server is created inside * a template database and a new database is created out of it. * We have no chance to hook into server creation to create data * directory for it during database creation time. */ CreateCStoreDatabaseDirectory(MyDatabaseId); InitializeCStoreTableFile(relationId, relation); heap_close(relation, AccessExclusiveLock); } } PG_RETURN_NULL(); } /* * CStoreProcessUtility is the hook for handling utility commands. This function * customizes the behaviour of "COPY cstore_table" and "DROP FOREIGN TABLE * cstore_table" commands. For all other utility statements, the function calls * the previous utility hook or the standard utility command via macro * CALL_PREVIOUS_UTILITY. */ #if PG_VERSION_NUM >= 100000 static void CStoreProcessUtility(PlannedStmt *plannedStatement, const char *queryString, ProcessUtilityContext context, ParamListInfo paramListInfo, QueryEnvironment *queryEnvironment, DestReceiver *destReceiver, char *completionTag) #else static void CStoreProcessUtility(Node * parseTree, const char *queryString, ProcessUtilityContext context, ParamListInfo paramListInfo, DestReceiver *destReceiver, char *completionTag) #endif { #if PG_VERSION_NUM >= 100000 Node *parseTree = plannedStatement->utilityStmt; #endif if (nodeTag(parseTree) == T_CopyStmt) { CopyStmt *copyStatement = (CopyStmt *) parseTree; if (CopyCStoreTableStatement(copyStatement)) { CStoreProcessCopyCommand(copyStatement, queryString, completionTag); } else { CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, destReceiver, completionTag); } } else if (nodeTag(parseTree) == T_DropStmt) { DropStmt *dropStmt = (DropStmt *) parseTree; if (dropStmt->removeType == OBJECT_EXTENSION) { bool removeCStoreDirectory = false; ListCell *objectCell = NULL; foreach(objectCell, dropStmt->objects) { Node *object = (Node *) lfirst(objectCell); char *objectName = NULL; #if PG_VERSION_NUM >= 100000 Assert(IsA(object, String)); objectName = strVal(object); #else Assert(IsA(object, List)); objectName = strVal(linitial((List *) object)); #endif if (strncmp(CSTORE_FDW_NAME, objectName, NAMEDATALEN) == 0) { removeCStoreDirectory = true; } } CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, destReceiver, completionTag); if (removeCStoreDirectory) { RemoveCStoreDatabaseDirectory(MyDatabaseId); } } else { ListCell *fileListCell = NULL; List *droppedTables = DroppedCStoreFilenameList((DropStmt *) parseTree); CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, destReceiver, completionTag); foreach(fileListCell, droppedTables) { char *fileName = lfirst(fileListCell); DeleteCStoreTableFiles(fileName); } } } else if (nodeTag(parseTree) == T_TruncateStmt) { TruncateStmt *truncateStatement = (TruncateStmt *) parseTree; List *allTablesList = truncateStatement->relations; List *cstoreTablesList = FindCStoreTables(allTablesList); List *otherTablesList = list_difference(allTablesList, cstoreTablesList); List *cstoreRelationList = OpenRelationsForTruncate(cstoreTablesList); ListCell *cstoreRelationCell = NULL; if (otherTablesList != NIL) { truncateStatement->relations = otherTablesList; CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, destReceiver, completionTag); /* restore the former relation list. Our * replacement could be freed but still needed * in a cached plan. A truncate can be cached * if run from a pl/pgSQL function */ truncateStatement->relations = allTablesList; } TruncateCStoreTables(cstoreRelationList); foreach(cstoreRelationCell, cstoreRelationList) { Relation relation = (Relation) lfirst(cstoreRelationCell); heap_close(relation, AccessExclusiveLock); } } else if (nodeTag(parseTree) == T_AlterTableStmt) { AlterTableStmt *alterTable = (AlterTableStmt *) parseTree; CStoreProcessAlterTableCommand(alterTable); CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, destReceiver, completionTag); } else if (nodeTag(parseTree) == T_DropdbStmt) { DropdbStmt *dropDdStmt = (DropdbStmt *) parseTree; bool missingOk = true; Oid databaseOid = get_database_oid(dropDdStmt->dbname, missingOk); /* let postgres handle error checking and dropping of the database */ CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, destReceiver, completionTag); if (databaseOid != InvalidOid) { RemoveCStoreDatabaseDirectory(databaseOid); } } /* handle other utility statements */ else { CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, destReceiver, completionTag); } } /* * CopyCStoreTableStatement check whether the COPY statement is a "COPY cstore_table FROM * ..." or "COPY cstore_table TO ...." statement. If it is then the function returns * true. The function returns false otherwise. */ static bool CopyCStoreTableStatement(CopyStmt* copyStatement) { bool copyCStoreTableStatement = false; if (copyStatement->relation != NULL) { Oid relationId = RangeVarGetRelid(copyStatement->relation, AccessShareLock, true); bool cstoreTable = CStoreTable(relationId); if (cstoreTable) { bool distributedTable = DistributedTable(relationId); bool distributedCopy = DistributedWorkerCopy(copyStatement); if (distributedTable || distributedCopy) { /* let COPY on distributed tables fall through to Citus */ copyCStoreTableStatement = false; } else { copyCStoreTableStatement = true; } } } return copyCStoreTableStatement; } /* * CheckSuperuserPrivilegesForCopy checks if superuser privilege is required by * copy operation and reports error if user does not have superuser rights. */ static void CheckSuperuserPrivilegesForCopy(const CopyStmt* copyStatement) { /* * We disallow copy from file or program except to superusers. These checks * are based on the checks in DoCopy() function of copy.c. */ if (copyStatement->filename != NULL && !superuser()) { if (copyStatement->is_program) { ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), errmsg("must be superuser to COPY to or from a program"), errhint("Anyone can COPY to stdout or from stdin. " "psql's \\copy command also works for anyone."))); } else { ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), errmsg("must be superuser to COPY to or from a file"), errhint("Anyone can COPY to stdout or from stdin. " "psql's \\copy command also works for anyone."))); } } } /* * CStoreProcessCopyCommand handles COPY FROM/TO ... statements. * It determines the copy direction and forwards execution to appropriate function. */ static void CStoreProcessCopyCommand(CopyStmt *copyStatement, const char* queryString, char *completionTag) { uint64 processedCount = 0; if (copyStatement->is_from) { processedCount = CopyIntoCStoreTable(copyStatement, queryString); } else { processedCount = CopyOutCStoreTable(copyStatement, queryString); } if (completionTag != NULL) { snprintf(completionTag, COMPLETION_TAG_BUFSIZE, "COPY " UINT64_FORMAT, processedCount); } } /* * CopyIntoCStoreTable handles a "COPY cstore_table FROM" statement. This * function uses the COPY command's functions to read and parse rows from * the data source specified in the COPY statement. The function then writes * each row to the file specified in the cstore foreign table options. Finally, * the function returns the number of copied rows. */ static uint64 CopyIntoCStoreTable(const CopyStmt *copyStatement, const char *queryString) { uint64 processedRowCount = 0; Relation relation = NULL; Oid relationId = InvalidOid; TupleDesc tupleDescriptor = NULL; uint32 columnCount = 0; CopyState copyState = NULL; bool nextRowFound = true; Datum *columnValues = NULL; bool *columnNulls = NULL; TableWriteState *writeState = NULL; CStoreFdwOptions *cstoreFdwOptions = NULL; MemoryContext tupleContext = NULL; /* Only superuser can copy from or to local file */ CheckSuperuserPrivilegesForCopy(copyStatement); Assert(copyStatement->relation != NULL); /* * Open and lock the relation. We acquire ShareUpdateExclusiveLock to allow * concurrent reads, but block concurrent writes. */ relation = heap_openrv(copyStatement->relation, ShareUpdateExclusiveLock); relationId = RelationGetRelid(relation); /* allocate column values and nulls arrays */ tupleDescriptor = RelationGetDescr(relation); columnCount = tupleDescriptor->natts; columnValues = palloc0(columnCount * sizeof(Datum)); columnNulls = palloc0(columnCount * sizeof(bool)); cstoreFdwOptions = CStoreGetOptions(relationId); /* * We create a new memory context called tuple context, and read and write * each row's values within this memory context. After each read and write, * we reset the memory context. That way, we immediately release memory * allocated for each row, and don't bloat memory usage with large input * files. */ tupleContext = AllocSetContextCreate(CurrentMemoryContext, "CStore COPY Row Memory Context", ALLOCSET_DEFAULT_SIZES); /* init state to read from COPY data source */ #if (PG_VERSION_NUM >= 100000) { ParseState *pstate = make_parsestate(NULL); pstate->p_sourcetext = queryString; copyState = BeginCopyFrom(pstate, relation, copyStatement->filename, copyStatement->is_program, NULL, copyStatement->attlist, copyStatement->options); free_parsestate(pstate); } #else copyState = BeginCopyFrom(relation, copyStatement->filename, copyStatement->is_program, copyStatement->attlist, copyStatement->options); #endif /* init state to write to the cstore file */ writeState = CStoreBeginWrite(cstoreFdwOptions->filename, cstoreFdwOptions->compressionType, cstoreFdwOptions->stripeRowCount, cstoreFdwOptions->blockRowCount, tupleDescriptor); while (nextRowFound) { /* read the next row in tupleContext */ MemoryContext oldContext = MemoryContextSwitchTo(tupleContext); #if PG_VERSION_NUM >= 120000 nextRowFound = NextCopyFrom(copyState, NULL, columnValues, columnNulls); #else nextRowFound = NextCopyFrom(copyState, NULL, columnValues, columnNulls, NULL); #endif MemoryContextSwitchTo(oldContext); /* write the row to the cstore file */ if (nextRowFound) { CStoreWriteRow(writeState, columnValues, columnNulls); processedRowCount++; } MemoryContextReset(tupleContext); CHECK_FOR_INTERRUPTS(); } /* end read/write sessions and close the relation */ EndCopyFrom(copyState); CStoreEndWrite(writeState); heap_close(relation, ShareUpdateExclusiveLock); return processedRowCount; } /* * CopyFromCStoreTable handles a "COPY cstore_table TO ..." statement. Statement * is converted to "COPY (SELECT * FROM cstore_table) TO ..." and forwarded to * postgres native COPY handler. Function returns number of files copied to external * stream. Copying selected columns from cstore table is not currently supported. */ static uint64 CopyOutCStoreTable(CopyStmt* copyStatement, const char* queryString) { uint64 processedCount = 0; RangeVar *relation = NULL; char *qualifiedName = NULL; List *queryList = NIL; Node *rawQuery = NULL; StringInfo newQuerySubstring = makeStringInfo(); if (copyStatement->attlist != NIL) { ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("copy column list is not supported"), errhint("use 'copy (select from ) to " "...' instead"))); } relation = copyStatement->relation; qualifiedName = quote_qualified_identifier(relation->schemaname, relation->relname); appendStringInfo(newQuerySubstring, "select * from %s", qualifiedName); queryList = raw_parser(newQuerySubstring->data); /* take the first parse tree */ rawQuery = linitial(queryList); /* * Set the relation field to NULL so that COPY command works on * query field instead. */ copyStatement->relation = NULL; #if (PG_VERSION_NUM >= 100000) /* * raw_parser returns list of RawStmt* in PG 10+ we need to * extract actual query from it. */ { ParseState *pstate = make_parsestate(NULL); RawStmt *rawStatement = (RawStmt *) rawQuery; pstate->p_sourcetext = newQuerySubstring->data; copyStatement->query = rawStatement->stmt; DoCopy(pstate, copyStatement, -1, -1, &processedCount); free_parsestate(pstate); } #else copyStatement->query = rawQuery; DoCopy(copyStatement, queryString, &processedCount); #endif return processedCount; } /* * CStoreProcessAlterTableCommand checks if given alter table statement is * compatible with underlying data structure. Currently it only checks alter * column type. The function errors out if current column type can not be safely * converted to requested column type. This check is more restrictive than * PostgreSQL's because we can not change existing data. */ static void CStoreProcessAlterTableCommand(AlterTableStmt *alterStatement) { ObjectType objectType = alterStatement->relkind; RangeVar *relationRangeVar = alterStatement->relation; Oid relationId = InvalidOid; List *commandList = alterStatement->cmds; ListCell *commandCell = NULL; /* we are only interested in foreign table changes */ if (objectType != OBJECT_TABLE && objectType != OBJECT_FOREIGN_TABLE) { return; } relationId = RangeVarGetRelid(relationRangeVar, AccessShareLock, true); if (!CStoreTable(relationId)) { return; } foreach(commandCell, commandList) { AlterTableCmd *alterCommand = (AlterTableCmd *) lfirst(commandCell); if(alterCommand->subtype == AT_AlterColumnType) { char *columnName = alterCommand->name; ColumnDef *columnDef = (ColumnDef *) alterCommand->def; Oid targetTypeId = typenameTypeId(NULL, columnDef->typeName); char *typeName = TypeNameToString(columnDef->typeName); AttrNumber attributeNumber = get_attnum(relationId, columnName); Oid currentTypeId = InvalidOid; if (attributeNumber <= 0) { /* let standard utility handle this */ continue; } currentTypeId = get_atttype(relationId, attributeNumber); /* * We are only interested in implicit coersion type compatibility. * Erroring out here to prevent further processing. */ if (!can_coerce_type(1, ¤tTypeId, &targetTypeId, COERCION_IMPLICIT)) { ereport(ERROR, (errmsg("Column %s cannot be cast automatically to " "type %s", columnName, typeName))); } } } } /* * DropppedCStoreFilenameList extracts and returns the list of cstore file names * from DROP table statement */ static List * DroppedCStoreFilenameList(DropStmt *dropStatement) { List *droppedCStoreFileList = NIL; if (dropStatement->removeType == OBJECT_FOREIGN_TABLE) { ListCell *dropObjectCell = NULL; foreach(dropObjectCell, dropStatement->objects) { List *tableNameList = (List *) lfirst(dropObjectCell); RangeVar *rangeVar = makeRangeVarFromNameList(tableNameList); Oid relationId = RangeVarGetRelid(rangeVar, AccessShareLock, true); if (CStoreTable(relationId)) { CStoreFdwOptions *cstoreFdwOptions = CStoreGetOptions(relationId); char *defaultfilename = CStoreDefaultFilePath(relationId); /* * Skip files that are placed in default location, they are handled * by sql drop trigger. Both paths are generated by code, use * of strcmp is safe here. */ if (strcmp(defaultfilename, cstoreFdwOptions->filename) == 0) { continue; } droppedCStoreFileList = lappend(droppedCStoreFileList, cstoreFdwOptions->filename); } } } return droppedCStoreFileList; } /* FindCStoreTables returns list of CStore tables from given table list */ static List * FindCStoreTables(List *tableList) { List *cstoreTableList = NIL; ListCell *relationCell = NULL; foreach(relationCell, tableList) { RangeVar *rangeVar = (RangeVar *) lfirst(relationCell); Oid relationId = RangeVarGetRelid(rangeVar, AccessShareLock, true); if (CStoreTable(relationId) && !DistributedTable(relationId)) { cstoreTableList = lappend(cstoreTableList, rangeVar); } } return cstoreTableList; } /* * OpenRelationsForTruncate opens and locks relations for tables to be truncated. * * It also performs a permission checks to see if the user has truncate privilege * on tables. */ static List * OpenRelationsForTruncate(List *cstoreTableList) { ListCell *relationCell = NULL; List *relationIdList = NIL; List *relationList = NIL; foreach(relationCell, cstoreTableList) { RangeVar *rangeVar = (RangeVar *) lfirst(relationCell); Relation relation = heap_openrv(rangeVar, AccessExclusiveLock); Oid relationId = relation->rd_id; AclResult aclresult = pg_class_aclcheck(relationId, GetUserId(), ACL_TRUNCATE); if (aclresult != ACLCHECK_OK) { aclcheck_error(aclresult, ACLCHECK_OBJECT_TABLE, get_rel_name(relationId)); } /* check if this relation is repeated */ if (list_member_oid(relationIdList, relationId)) { heap_close(relation, AccessExclusiveLock); } else { relationIdList = lappend_oid(relationIdList, relationId); relationList = lappend(relationList, relation); } } return relationList; } /* TruncateCStoreTable truncates given cstore tables */ static void TruncateCStoreTables(List *cstoreRelationList) { ListCell *relationCell = NULL; foreach(relationCell, cstoreRelationList) { Relation relation = (Relation) lfirst(relationCell); Oid relationId = relation->rd_id; CStoreFdwOptions *cstoreFdwOptions = NULL; Assert(CStoreTable(relationId)); cstoreFdwOptions = CStoreGetOptions(relationId); DeleteCStoreTableFiles(cstoreFdwOptions->filename); InitializeCStoreTableFile(relationId, relation); } } /* * DeleteCStoreTableFiles deletes the data and footer files for a cstore table * whose data filename is given. */ static void DeleteCStoreTableFiles(char *filename) { int dataFileRemoved = 0; int footerFileRemoved = 0; StringInfo tableFooterFilename = makeStringInfo(); appendStringInfo(tableFooterFilename, "%s%s", filename, CSTORE_FOOTER_FILE_SUFFIX); /* delete the footer file */ footerFileRemoved = unlink(tableFooterFilename->data); if (footerFileRemoved != 0) { ereport(WARNING, (errcode_for_file_access(), errmsg("could not delete file \"%s\": %m", tableFooterFilename->data))); } /* delete the data file */ dataFileRemoved = unlink(filename); if (dataFileRemoved != 0) { ereport(WARNING, (errcode_for_file_access(), errmsg("could not delete file \"%s\": %m", filename))); } } /* * InitializeCStoreTableFile creates data and footer file for a cstore table. * The function assumes data and footer files do not exist, therefore * it should be called on empty or non-existing table. Notice that the caller * is expected to acquire AccessExclusiveLock on the relation. */ static void InitializeCStoreTableFile(Oid relationId, Relation relation) { TableWriteState *writeState = NULL; TupleDesc tupleDescriptor = RelationGetDescr(relation); CStoreFdwOptions* cstoreFdwOptions = CStoreGetOptions(relationId); /* * Initialize state to write to the cstore file. This creates an * empty data file and a valid footer file for the table. */ writeState = CStoreBeginWrite(cstoreFdwOptions->filename, cstoreFdwOptions->compressionType, cstoreFdwOptions->stripeRowCount, cstoreFdwOptions->blockRowCount, tupleDescriptor); CStoreEndWrite(writeState); } /* * CStoreTable checks if the given table name belongs to a foreign columnar store * table. If it does, the function returns true. Otherwise, it returns false. */ static bool CStoreTable(Oid relationId) { bool cstoreTable = false; char relationKind = 0; if (relationId == InvalidOid) { return false; } relationKind = get_rel_relkind(relationId); if (relationKind == RELKIND_FOREIGN_TABLE) { ForeignTable *foreignTable = GetForeignTable(relationId); ForeignServer *server = GetForeignServer(foreignTable->serverid); if (CStoreServer(server)) { cstoreTable = true; } } return cstoreTable; } /* * CStoreServer checks if the given foreign server belongs to cstore_fdw. If it * does, the function returns true. Otherwise, it returns false. */ static bool CStoreServer(ForeignServer *server) { ForeignDataWrapper *foreignDataWrapper = GetForeignDataWrapper(server->fdwid); bool cstoreServer = false; char *foreignWrapperName = foreignDataWrapper->fdwname; if (strncmp(foreignWrapperName, CSTORE_FDW_NAME, NAMEDATALEN) == 0) { cstoreServer = true; } return cstoreServer; } /* * DistributedTable checks if the given relationId is the OID of a distributed table, * which may also be a cstore_fdw table, but in that case COPY should be handled by * Citus. */ static bool DistributedTable(Oid relationId) { bool distributedTable = false; Oid partitionOid = InvalidOid; Relation heapRelation = NULL; TableScanDesc scanDesc = NULL; const int scanKeyCount = 1; ScanKeyData scanKey[1]; HeapTuple heapTuple = NULL; bool missingOK = true; Oid extensionOid = get_extension_oid(CITUS_EXTENSION_NAME, missingOK); if (extensionOid == InvalidOid) { /* if the citus extension isn't created, no tables are distributed */ return false; } partitionOid = get_relname_relid(CITUS_PARTITION_TABLE_NAME, PG_CATALOG_NAMESPACE); if (partitionOid == InvalidOid) { /* the pg_dist_partition table does not exist */ return false; } heapRelation = heap_open(partitionOid, AccessShareLock); ScanKeyInit(&scanKey[0], ATTR_NUM_PARTITION_RELATION_ID, InvalidStrategy, F_OIDEQ, ObjectIdGetDatum(relationId)); scanDesc = table_beginscan(heapRelation, SnapshotSelf, scanKeyCount, scanKey); heapTuple = heap_getnext(scanDesc, ForwardScanDirection); distributedTable = HeapTupleIsValid(heapTuple); table_endscan(scanDesc); relation_close(heapRelation, AccessShareLock); return distributedTable; } /* * DistributedWorkerCopy returns whether the Citus-specific master_host option is * present in the COPY options. */ static bool DistributedWorkerCopy(CopyStmt *copyStatement) { ListCell *optionCell = NULL; foreach(optionCell, copyStatement->options) { DefElem *defel = (DefElem *) lfirst(optionCell); if (strncmp(defel->defname, "master_host", NAMEDATALEN) == 0) { return true; } } return false; } /* * CreateCStoreDatabaseDirectory creates the directory (and parent directories, * if needed) used to store automatically managed cstore_fdw files. The path to * the directory is $PGDATA/cstore_fdw/{databaseOid}. */ static void CreateCStoreDatabaseDirectory(Oid databaseOid) { bool cstoreDirectoryExists = false; bool databaseDirectoryExists = false; StringInfo cstoreDatabaseDirectoryPath = NULL; StringInfo cstoreDirectoryPath = makeStringInfo(); appendStringInfo(cstoreDirectoryPath, "%s/%s", DataDir, CSTORE_FDW_NAME); cstoreDirectoryExists = DirectoryExists(cstoreDirectoryPath); if (!cstoreDirectoryExists) { CreateDirectory(cstoreDirectoryPath); } cstoreDatabaseDirectoryPath = makeStringInfo(); appendStringInfo(cstoreDatabaseDirectoryPath, "%s/%s/%u", DataDir, CSTORE_FDW_NAME, databaseOid); databaseDirectoryExists = DirectoryExists(cstoreDatabaseDirectoryPath); if (!databaseDirectoryExists) { CreateDirectory(cstoreDatabaseDirectoryPath); } } /* DirectoryExists checks if a directory exists for the given directory name. */ static bool DirectoryExists(StringInfo directoryName) { bool directoryExists = true; struct stat directoryStat; int statOK = stat(directoryName->data, &directoryStat); if (statOK == 0) { /* file already exists; check that it is a directory */ if (!S_ISDIR(directoryStat.st_mode)) { ereport(ERROR, (errmsg("\"%s\" is not a directory", directoryName->data), errhint("You need to remove or rename the file \"%s\".", directoryName->data))); } } else { if (errno == ENOENT) { directoryExists = false; } else { ereport(ERROR, (errcode_for_file_access(), errmsg("could not stat directory \"%s\": %m", directoryName->data))); } } return directoryExists; } /* CreateDirectory creates a new directory with the given directory name. */ static void CreateDirectory(StringInfo directoryName) { int makeOK = mkdir(directoryName->data, S_IRWXU); if (makeOK != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not create directory \"%s\": %m", directoryName->data))); } } /* * RemoveCStoreDatabaseDirectory removes CStore directory previously * created for this database. * However it does not remove 'cstore_fdw' directory even if there * are no other databases left. */ static void RemoveCStoreDatabaseDirectory(Oid databaseOid) { StringInfo cstoreDirectoryPath = makeStringInfo(); StringInfo cstoreDatabaseDirectoryPath = makeStringInfo(); appendStringInfo(cstoreDirectoryPath, "%s/%s", DataDir, CSTORE_FDW_NAME); appendStringInfo(cstoreDatabaseDirectoryPath, "%s/%s/%u", DataDir, CSTORE_FDW_NAME, databaseOid); if (DirectoryExists(cstoreDatabaseDirectoryPath)) { rmtree(cstoreDatabaseDirectoryPath->data, true); } } /* * cstore_table_size returns the total on-disk size of a cstore table in bytes. * The result includes the sizes of data file and footer file. */ Datum cstore_table_size(PG_FUNCTION_ARGS) { Oid relationId = PG_GETARG_OID(0); int64 tableSize = 0; CStoreFdwOptions *cstoreFdwOptions = NULL; char *dataFilename = NULL; StringInfo footerFilename = NULL; int dataFileStatResult = 0; int footerFileStatResult = 0; struct stat dataFileStatBuffer; struct stat footerFileStatBuffer; bool cstoreTable = CStoreTable(relationId); if (!cstoreTable) { ereport(ERROR, (errmsg("relation is not a cstore table"))); } cstoreFdwOptions = CStoreGetOptions(relationId); dataFilename = cstoreFdwOptions->filename; dataFileStatResult = stat(dataFilename, &dataFileStatBuffer); if (dataFileStatResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not stat file \"%s\": %m", dataFilename))); } footerFilename = makeStringInfo(); appendStringInfo(footerFilename, "%s%s", dataFilename, CSTORE_FOOTER_FILE_SUFFIX); footerFileStatResult = stat(footerFilename->data, &footerFileStatBuffer); if (footerFileStatResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not stat file \"%s\": %m", footerFilename->data))); } tableSize += dataFileStatBuffer.st_size; tableSize += footerFileStatBuffer.st_size; PG_RETURN_INT64(tableSize); } /* * cstore_fdw_handler creates and returns a struct with pointers to foreign * table callback functions. */ Datum cstore_fdw_handler(PG_FUNCTION_ARGS) { FdwRoutine *fdwRoutine = makeNode(FdwRoutine); fdwRoutine->GetForeignRelSize = CStoreGetForeignRelSize; fdwRoutine->GetForeignPaths = CStoreGetForeignPaths; fdwRoutine->GetForeignPlan = CStoreGetForeignPlan; fdwRoutine->ExplainForeignScan = CStoreExplainForeignScan; fdwRoutine->BeginForeignScan = CStoreBeginForeignScan; fdwRoutine->IterateForeignScan = CStoreIterateForeignScan; fdwRoutine->ReScanForeignScan = CStoreReScanForeignScan; fdwRoutine->EndForeignScan = CStoreEndForeignScan; fdwRoutine->AnalyzeForeignTable = CStoreAnalyzeForeignTable; fdwRoutine->PlanForeignModify = CStorePlanForeignModify; fdwRoutine->BeginForeignModify = CStoreBeginForeignModify; fdwRoutine->ExecForeignInsert = CStoreExecForeignInsert; fdwRoutine->EndForeignModify = CStoreEndForeignModify; #if PG_VERSION_NUM >= 110000 fdwRoutine->BeginForeignInsert = CStoreBeginForeignInsert; fdwRoutine->EndForeignInsert = CStoreEndForeignInsert; #endif #if PG_VERSION_NUM >= 90600 fdwRoutine->IsForeignScanParallelSafe = CStoreIsForeignScanParallelSafe; #endif PG_RETURN_POINTER(fdwRoutine); } /* * cstore_fdw_validator validates options given to one of the following commands: * foreign data wrapper, server, user mapping, or foreign table. This function * errors out if the given option name or its value is considered invalid. */ Datum cstore_fdw_validator(PG_FUNCTION_ARGS) { Datum optionArray = PG_GETARG_DATUM(0); Oid optionContextId = PG_GETARG_OID(1); List *optionList = untransformRelOptions(optionArray); ListCell *optionCell = NULL; char *filename = NULL; char *compressionTypeString = NULL; char *stripeRowCountString = NULL; char *blockRowCountString = NULL; foreach(optionCell, optionList) { DefElem *optionDef = (DefElem *) lfirst(optionCell); char *optionName = optionDef->defname; bool optionValid = false; int32 optionIndex = 0; for (optionIndex = 0; optionIndex < ValidOptionCount; optionIndex++) { const CStoreValidOption *validOption = &(ValidOptionArray[optionIndex]); if ((optionContextId == validOption->optionContextId) && (strncmp(optionName, validOption->optionName, NAMEDATALEN) == 0)) { optionValid = true; break; } } /* if invalid option, display an informative error message */ if (!optionValid) { StringInfo optionNamesString = OptionNamesString(optionContextId); ereport(ERROR, (errcode(ERRCODE_FDW_INVALID_OPTION_NAME), errmsg("invalid option \"%s\"", optionName), errhint("Valid options in this context are: %s", optionNamesString->data))); } if (strncmp(optionName, OPTION_NAME_FILENAME, NAMEDATALEN) == 0) { filename = defGetString(optionDef); } else if (strncmp(optionName, OPTION_NAME_COMPRESSION_TYPE, NAMEDATALEN) == 0) { compressionTypeString = defGetString(optionDef); } else if (strncmp(optionName, OPTION_NAME_STRIPE_ROW_COUNT, NAMEDATALEN) == 0) { stripeRowCountString = defGetString(optionDef); } else if (strncmp(optionName, OPTION_NAME_BLOCK_ROW_COUNT, NAMEDATALEN) == 0) { blockRowCountString = defGetString(optionDef); } } if (optionContextId == ForeignTableRelationId) { ValidateForeignTableOptions(filename, compressionTypeString, stripeRowCountString, blockRowCountString); } PG_RETURN_VOID(); } /* * cstore_clean_table_resources cleans up table data and metadata with provided * relation id. The function is meant to be called from drop_event_trigger. It * has no way of knowing if the provided relation id belongs to a cstore table. * Therefore it first checks if data file exists at default location before * attempting to remove data and footer files. If the table is created at a * custom path than its resources would not be removed. */ Datum cstore_clean_table_resources(PG_FUNCTION_ARGS) { Oid relationId = PG_GETARG_OID(0); StringInfo filePath = makeStringInfo(); struct stat fileStat; int statResult = -1; appendStringInfo(filePath, "%s/%s/%d/%d", DataDir, CSTORE_FDW_NAME, (int) MyDatabaseId, (int) relationId); /* * Check to see if the file exist first. This is the only way to * find out if the table being dropped is a cstore table. */ statResult = stat(filePath->data, &fileStat); if (statResult == 0) { DeleteCStoreTableFiles(filePath->data); } PG_RETURN_VOID(); } /* * OptionNamesString finds all options that are valid for the current context, * and concatenates these option names in a comma separated string. The function * is unchanged from mongo_fdw. */ static StringInfo OptionNamesString(Oid currentContextId) { StringInfo optionNamesString = makeStringInfo(); bool firstOptionAppended = false; int32 optionIndex = 0; for (optionIndex = 0; optionIndex < ValidOptionCount; optionIndex++) { const CStoreValidOption *validOption = &(ValidOptionArray[optionIndex]); /* if option belongs to current context, append option name */ if (currentContextId == validOption->optionContextId) { if (firstOptionAppended) { appendStringInfoString(optionNamesString, ", "); } appendStringInfoString(optionNamesString, validOption->optionName); firstOptionAppended = true; } } return optionNamesString; } /* * GetSlotHeapTuple abstracts getting HeapTuple from TupleTableSlot between versions */ static HeapTuple GetSlotHeapTuple(TupleTableSlot *tts) { #if PG_VERSION_NUM >= 120000 return tts->tts_ops->copy_heap_tuple(tts); #else return tts->tts_tuple; #endif } /* * CStoreGetOptions returns the option values to be used when reading and writing * the cstore file. To resolve these values, the function checks options for the * foreign table, and if not present, falls back to default values. This function * errors out if given option values are considered invalid. */ static CStoreFdwOptions * CStoreGetOptions(Oid foreignTableId) { CStoreFdwOptions *cstoreFdwOptions = NULL; char *filename = NULL; CompressionType compressionType = DEFAULT_COMPRESSION_TYPE; int32 stripeRowCount = DEFAULT_STRIPE_ROW_COUNT; int32 blockRowCount = DEFAULT_BLOCK_ROW_COUNT; char *compressionTypeString = NULL; char *stripeRowCountString = NULL; char *blockRowCountString = NULL; filename = CStoreGetOptionValue(foreignTableId, OPTION_NAME_FILENAME); compressionTypeString = CStoreGetOptionValue(foreignTableId, OPTION_NAME_COMPRESSION_TYPE); stripeRowCountString = CStoreGetOptionValue(foreignTableId, OPTION_NAME_STRIPE_ROW_COUNT); blockRowCountString = CStoreGetOptionValue(foreignTableId, OPTION_NAME_BLOCK_ROW_COUNT); ValidateForeignTableOptions(filename, compressionTypeString, stripeRowCountString, blockRowCountString); /* parse provided options */ if (compressionTypeString != NULL) { compressionType = ParseCompressionType(compressionTypeString); } if (stripeRowCountString != NULL) { stripeRowCount = pg_atoi(stripeRowCountString, sizeof(int32), 0); } if (blockRowCountString != NULL) { blockRowCount = pg_atoi(blockRowCountString, sizeof(int32), 0); } /* set default filename if it is not provided */ if (filename == NULL) { filename = CStoreDefaultFilePath(foreignTableId); } cstoreFdwOptions = palloc0(sizeof(CStoreFdwOptions)); cstoreFdwOptions->filename = filename; cstoreFdwOptions->compressionType = compressionType; cstoreFdwOptions->stripeRowCount = stripeRowCount; cstoreFdwOptions->blockRowCount = blockRowCount; return cstoreFdwOptions; } /* * CStoreGetOptionValue walks over foreign table and foreign server options, and * looks for the option with the given name. If found, the function returns the * option's value. This function is unchanged from mongo_fdw. */ static char * CStoreGetOptionValue(Oid foreignTableId, const char *optionName) { ForeignTable *foreignTable = NULL; ForeignServer *foreignServer = NULL; List *optionList = NIL; ListCell *optionCell = NULL; char *optionValue = NULL; foreignTable = GetForeignTable(foreignTableId); foreignServer = GetForeignServer(foreignTable->serverid); optionList = list_concat(optionList, foreignTable->options); optionList = list_concat(optionList, foreignServer->options); foreach(optionCell, optionList) { DefElem *optionDef = (DefElem *) lfirst(optionCell); char *optionDefName = optionDef->defname; if (strncmp(optionDefName, optionName, NAMEDATALEN) == 0) { optionValue = defGetString(optionDef); break; } } return optionValue; } /* * ValidateForeignTableOptions verifies if given options are valid cstore_fdw * foreign table options. This function errors out if given option value is * considered invalid. */ static void ValidateForeignTableOptions(char *filename, char *compressionTypeString, char *stripeRowCountString, char *blockRowCountString) { /* we currently do not have any checks for filename */ (void) filename; /* check if the provided compression type is valid */ if (compressionTypeString != NULL) { CompressionType compressionType = ParseCompressionType(compressionTypeString); if (compressionType == COMPRESSION_TYPE_INVALID) { ereport(ERROR, (errmsg("invalid compression type"), errhint("Valid options are: %s", COMPRESSION_STRING_DELIMITED_LIST))); } } /* check if the provided stripe row count has correct format and range */ if (stripeRowCountString != NULL) { /* pg_atoi() errors out if the given string is not a valid 32-bit integer */ int32 stripeRowCount = pg_atoi(stripeRowCountString, sizeof(int32), 0); if (stripeRowCount < STRIPE_ROW_COUNT_MINIMUM || stripeRowCount > STRIPE_ROW_COUNT_MAXIMUM) { ereport(ERROR, (errmsg("invalid stripe row count"), errhint("Stripe row count must be an integer between " "%d and %d", STRIPE_ROW_COUNT_MINIMUM, STRIPE_ROW_COUNT_MAXIMUM))); } } /* check if the provided block row count has correct format and range */ if (blockRowCountString != NULL) { /* pg_atoi() errors out if the given string is not a valid 32-bit integer */ int32 blockRowCount = pg_atoi(blockRowCountString, sizeof(int32), 0); if (blockRowCount < BLOCK_ROW_COUNT_MINIMUM || blockRowCount > BLOCK_ROW_COUNT_MAXIMUM) { ereport(ERROR, (errmsg("invalid block row count"), errhint("Block row count must be an integer between " "%d and %d", BLOCK_ROW_COUNT_MINIMUM, BLOCK_ROW_COUNT_MAXIMUM))); } } } /* * CStoreDefaultFilePath constructs the default file path to use for a cstore_fdw * table. The path is of the form $PGDATA/cstore_fdw/{databaseOid}/{relfilenode}. */ static char * CStoreDefaultFilePath(Oid foreignTableId) { Relation relation = relation_open(foreignTableId, AccessShareLock); RelFileNode relationFileNode = relation->rd_node; Oid databaseOid = relationFileNode.dbNode; Oid relationFileOid = relationFileNode.relNode; relation_close(relation, AccessShareLock); /* PG12 onward does not create relfilenode for foreign tables */ if (databaseOid == InvalidOid) { databaseOid = MyDatabaseId; relationFileOid = foreignTableId; } StringInfo cstoreFilePath = makeStringInfo(); appendStringInfo(cstoreFilePath, "%s/%s/%u/%u", DataDir, CSTORE_FDW_NAME, databaseOid, relationFileOid); return cstoreFilePath->data; } /* ParseCompressionType converts a string to a compression type. */ static CompressionType ParseCompressionType(const char *compressionTypeString) { CompressionType compressionType = COMPRESSION_TYPE_INVALID; Assert(compressionTypeString != NULL); if (strncmp(compressionTypeString, COMPRESSION_STRING_NONE, NAMEDATALEN) == 0) { compressionType = COMPRESSION_NONE; } else if (strncmp(compressionTypeString, COMPRESSION_STRING_PG_LZ, NAMEDATALEN) == 0) { compressionType = COMPRESSION_PG_LZ; } return compressionType; } /* * CStoreGetForeignRelSize obtains relation size estimates for a foreign table and * puts its estimate for row count into baserel->rows. */ static void CStoreGetForeignRelSize(PlannerInfo *root, RelOptInfo *baserel, Oid foreignTableId) { CStoreFdwOptions *cstoreFdwOptions = CStoreGetOptions(foreignTableId); double tupleCountEstimate = TupleCountEstimate(baserel, cstoreFdwOptions->filename); double rowSelectivity = clauselist_selectivity(root, baserel->baserestrictinfo, 0, JOIN_INNER, NULL); double outputRowCount = clamp_row_est(tupleCountEstimate * rowSelectivity); baserel->rows = outputRowCount; } /* * CStoreGetForeignPaths creates possible access paths for a scan on the foreign * table. We currently have one possible access path. This path filters out row * blocks that are refuted by where clauses, and only returns values for the * projected columns. */ static void CStoreGetForeignPaths(PlannerInfo *root, RelOptInfo *baserel, Oid foreignTableId) { Path *foreignScanPath = NULL; CStoreFdwOptions *cstoreFdwOptions = CStoreGetOptions(foreignTableId); Relation relation = heap_open(foreignTableId, AccessShareLock); /* * We skip reading columns that are not in query. Here we assume that all * columns in relation have the same width, and estimate the number pages * that will be read by query. * * Ideally, we should also take into account the row blocks that will be * suppressed. But for that we need to know which columns are used for * sorting. If we wrongly assume that we are sorted by a specific column * and underestimate the page count, planner may choose nested loop join * in a place it shouldn't be used. Choosing merge join or hash join is * usually safer than nested loop join, so we take the more conservative * approach and assume all rows in the columnar store file will be read. * We intend to fix this in later version by improving the row sampling * algorithm and using the correlation statistics to detect which columns * are in stored in sorted order. */ List *queryColumnList = ColumnList(baserel, foreignTableId); uint32 queryColumnCount = list_length(queryColumnList); BlockNumber relationPageCount = PageCount(cstoreFdwOptions->filename); uint32 relationColumnCount = RelationGetNumberOfAttributes(relation); double queryColumnRatio = (double) queryColumnCount / relationColumnCount; double queryPageCount = relationPageCount * queryColumnRatio; double totalDiskAccessCost = seq_page_cost * queryPageCount; double tupleCountEstimate = TupleCountEstimate(baserel, cstoreFdwOptions->filename); /* * We estimate costs almost the same way as cost_seqscan(), thus assuming * that I/O costs are equivalent to a regular table file of the same size. */ double filterCostPerTuple = baserel->baserestrictcost.per_tuple; double cpuCostPerTuple = cpu_tuple_cost + filterCostPerTuple; double totalCpuCost = cpuCostPerTuple * tupleCountEstimate; double startupCost = baserel->baserestrictcost.startup; double totalCost = startupCost + totalCpuCost + totalDiskAccessCost; /* create a foreign path node and add it as the only possible path */ #if PG_VERSION_NUM >= 90600 foreignScanPath = (Path *) create_foreignscan_path(root, baserel, NULL, /* path target */ baserel->rows, startupCost, totalCost, NIL, /* no known ordering */ NULL, /* not parameterized */ NULL, /* no outer path */ NIL); /* no fdw_private */ #elif PG_VERSION_NUM >= 90500 foreignScanPath = (Path *) create_foreignscan_path(root, baserel, baserel->rows, startupCost, totalCost, NIL, /* no known ordering */ NULL, /* not parameterized */ NULL, /* no outer path */ NIL); /* no fdw_private */ #else foreignScanPath = (Path *) create_foreignscan_path(root, baserel, baserel->rows, startupCost, totalCost, NIL, /* no known ordering */ NULL, /* not parameterized */ NIL); /* no fdw_private */ #endif add_path(baserel, foreignScanPath); heap_close(relation, AccessShareLock); } /* * CStoreGetForeignPlan creates a ForeignScan plan node for scanning the foreign * table. We also add the query column list to scan nodes private list, because * we need it later for skipping over unused columns in the query. */ #if PG_VERSION_NUM >= 90500 static ForeignScan * CStoreGetForeignPlan(PlannerInfo *root, RelOptInfo *baserel, Oid foreignTableId, ForeignPath *bestPath, List *targetList, List *scanClauses, Plan *outerPlan) #else static ForeignScan * CStoreGetForeignPlan(PlannerInfo *root, RelOptInfo *baserel, Oid foreignTableId, ForeignPath *bestPath, List *targetList, List *scanClauses) #endif { ForeignScan *foreignScan = NULL; List *columnList = NIL; List *foreignPrivateList = NIL; /* * Although we skip row blocks that are refuted by the WHERE clause, but * we have no native ability to evaluate restriction clauses and make sure * that all non-related rows are filtered out. So we just put all of the * scanClauses into the plan node's qual list for the executor to check. */ scanClauses = extract_actual_clauses(scanClauses, false); /* extract regular clauses */ /* * As an optimization, we only read columns that are present in the query. * To find these columns, we need baserel. We don't have access to baserel * in executor's callback functions, so we get the column list here and put * it into foreign scan node's private list. */ columnList = ColumnList(baserel, foreignTableId); foreignPrivateList = list_make1(columnList); /* create the foreign scan node */ #if PG_VERSION_NUM >= 90500 foreignScan = make_foreignscan(targetList, scanClauses, baserel->relid, NIL, /* no expressions to evaluate */ foreignPrivateList, NIL, NIL, NULL); /* no outer path */ #else foreignScan = make_foreignscan(targetList, scanClauses, baserel->relid, NIL, /* no expressions to evaluate */ foreignPrivateList); #endif return foreignScan; } /* * TupleCountEstimate estimates the number of base relation tuples in the given * file. */ static double TupleCountEstimate(RelOptInfo *baserel, const char *filename) { double tupleCountEstimate = 0.0; /* check if the user executed Analyze on this foreign table before */ if (baserel->pages > 0) { /* * We have number of pages and number of tuples from pg_class (from a * previous ANALYZE), so compute a tuples-per-page estimate and scale * that by the current file size. */ double tupleDensity = baserel->tuples / (double) baserel->pages; BlockNumber pageCount = PageCount(filename); tupleCountEstimate = clamp_row_est(tupleDensity * (double) pageCount); } else { tupleCountEstimate = (double) CStoreTableRowCount(filename); } return tupleCountEstimate; } /* PageCount calculates and returns the number of pages in a file. */ static BlockNumber PageCount(const char *filename) { BlockNumber pageCount = 0; struct stat statBuffer; /* if file doesn't exist at plan time, use default estimate for its size */ int statResult = stat(filename, &statBuffer); if (statResult < 0) { statBuffer.st_size = 10 * BLCKSZ; } pageCount = (statBuffer.st_size + (BLCKSZ - 1)) / BLCKSZ; if (pageCount < 1) { pageCount = 1; } return pageCount; } /* * ColumnList takes in the planner's information about this foreign table. The * function then finds all columns needed for query execution, including those * used in projections, joins, and filter clauses, de-duplicates these columns, * and returns them in a new list. This function is taken from mongo_fdw with * slight modifications. */ static List * ColumnList(RelOptInfo *baserel, Oid foreignTableId) { List *columnList = NIL; List *neededColumnList = NIL; AttrNumber columnIndex = 1; AttrNumber columnCount = baserel->max_attr; #if PG_VERSION_NUM >= 90600 List *targetColumnList = baserel->reltarget->exprs; #else List *targetColumnList = baserel->reltargetlist; #endif ListCell *targetColumnCell = NULL; List *restrictInfoList = baserel->baserestrictinfo; ListCell *restrictInfoCell = NULL; const AttrNumber wholeRow = 0; Relation relation = heap_open(foreignTableId, AccessShareLock); TupleDesc tupleDescriptor = RelationGetDescr(relation); /* first add the columns used in joins and projections */ foreach(targetColumnCell, targetColumnList) { List *targetVarList = NIL; Node *targetExpr = (Node *) lfirst(targetColumnCell); #if PG_VERSION_NUM >= 90600 targetVarList = pull_var_clause(targetExpr, PVC_RECURSE_AGGREGATES | PVC_RECURSE_PLACEHOLDERS); #else targetVarList = pull_var_clause(targetExpr, PVC_RECURSE_AGGREGATES, PVC_RECURSE_PLACEHOLDERS); #endif neededColumnList = list_union(neededColumnList, targetVarList); } /* then walk over all restriction clauses, and pull up any used columns */ foreach(restrictInfoCell, restrictInfoList) { RestrictInfo *restrictInfo = (RestrictInfo *) lfirst(restrictInfoCell); Node *restrictClause = (Node *) restrictInfo->clause; List *clauseColumnList = NIL; /* recursively pull up any columns used in the restriction clause */ #if PG_VERSION_NUM >= 90600 clauseColumnList = pull_var_clause(restrictClause, PVC_RECURSE_AGGREGATES | PVC_RECURSE_PLACEHOLDERS); #else clauseColumnList = pull_var_clause(restrictClause, PVC_RECURSE_AGGREGATES, PVC_RECURSE_PLACEHOLDERS); #endif neededColumnList = list_union(neededColumnList, clauseColumnList); } /* walk over all column definitions, and de-duplicate column list */ for (columnIndex = 1; columnIndex <= columnCount; columnIndex++) { ListCell *neededColumnCell = NULL; Var *column = NULL; Form_pg_attribute attributeForm = TupleDescAttr(tupleDescriptor, columnIndex - 1); if (attributeForm->attisdropped) { continue; } /* look for this column in the needed column list */ foreach(neededColumnCell, neededColumnList) { Var *neededColumn = (Var *) lfirst(neededColumnCell); if (neededColumn->varattno == columnIndex) { column = neededColumn; break; } else if (neededColumn->varattno == wholeRow) { Index tableId = neededColumn->varno; column = makeVar(tableId, columnIndex, attributeForm->atttypid, attributeForm->atttypmod, attributeForm->attcollation, 0); break; } } if (column != NULL) { columnList = lappend(columnList, column); } } heap_close(relation, AccessShareLock); return columnList; } /* CStoreExplainForeignScan produces extra output for the Explain command. */ static void CStoreExplainForeignScan(ForeignScanState *scanState, ExplainState *explainState) { Oid foreignTableId = RelationGetRelid(scanState->ss.ss_currentRelation); CStoreFdwOptions *cstoreFdwOptions = CStoreGetOptions(foreignTableId); ExplainPropertyText("CStore File", cstoreFdwOptions->filename, explainState); /* supress file size if we're not showing cost details */ if (explainState->costs) { struct stat statBuffer; int statResult = stat(cstoreFdwOptions->filename, &statBuffer); if (statResult == 0) { ExplainPropertyLong("CStore File Size", (long) statBuffer.st_size, explainState); } } } /* CStoreBeginForeignScan starts reading the underlying cstore file. */ static void CStoreBeginForeignScan(ForeignScanState *scanState, int executorFlags) { TableReadState *readState = NULL; Oid foreignTableId = InvalidOid; CStoreFdwOptions *cstoreFdwOptions = NULL; Relation currentRelation = scanState->ss.ss_currentRelation; TupleDesc tupleDescriptor = RelationGetDescr(currentRelation); List *columnList = NIL; ForeignScan *foreignScan = NULL; List *foreignPrivateList = NIL; List *whereClauseList = NIL; /* if Explain with no Analyze, do nothing */ if (executorFlags & EXEC_FLAG_EXPLAIN_ONLY) { return; } foreignTableId = RelationGetRelid(scanState->ss.ss_currentRelation); cstoreFdwOptions = CStoreGetOptions(foreignTableId); foreignScan = (ForeignScan *) scanState->ss.ps.plan; foreignPrivateList = (List *) foreignScan->fdw_private; whereClauseList = foreignScan->scan.plan.qual; columnList = (List *) linitial(foreignPrivateList); readState = CStoreBeginRead(cstoreFdwOptions->filename, tupleDescriptor, columnList, whereClauseList); scanState->fdw_state = (void *) readState; } /* * CStoreIterateForeignScan reads the next record from the cstore file, converts * it to a Postgres tuple, and stores the converted tuple into the ScanTupleSlot * as a virtual tuple. */ static TupleTableSlot * CStoreIterateForeignScan(ForeignScanState *scanState) { TableReadState *readState = (TableReadState *) scanState->fdw_state; TupleTableSlot *tupleSlot = scanState->ss.ss_ScanTupleSlot; bool nextRowFound = false; TupleDesc tupleDescriptor = tupleSlot->tts_tupleDescriptor; Datum *columnValues = tupleSlot->tts_values; bool *columnNulls = tupleSlot->tts_isnull; uint32 columnCount = tupleDescriptor->natts; /* initialize all values for this row to null */ memset(columnValues, 0, columnCount * sizeof(Datum)); memset(columnNulls, true, columnCount * sizeof(bool)); ExecClearTuple(tupleSlot); nextRowFound = CStoreReadNextRow(readState, columnValues, columnNulls); if (nextRowFound) { ExecStoreVirtualTuple(tupleSlot); } return tupleSlot; } /* CStoreEndForeignScan finishes scanning the foreign table. */ static void CStoreEndForeignScan(ForeignScanState *scanState) { TableReadState *readState = (TableReadState *) scanState->fdw_state; if (readState != NULL) { CStoreEndRead(readState); } } /* CStoreReScanForeignScan rescans the foreign table. */ static void CStoreReScanForeignScan(ForeignScanState *scanState) { CStoreEndForeignScan(scanState); CStoreBeginForeignScan(scanState, 0); } /* * CStoreAnalyzeForeignTable sets the total page count and the function pointer * used to acquire a random sample of rows from the foreign file. */ static bool CStoreAnalyzeForeignTable(Relation relation, AcquireSampleRowsFunc *acquireSampleRowsFunc, BlockNumber *totalPageCount) { Oid foreignTableId = RelationGetRelid(relation); CStoreFdwOptions *cstoreFdwOptions = CStoreGetOptions(foreignTableId); struct stat statBuffer; int statResult = stat(cstoreFdwOptions->filename, &statBuffer); if (statResult < 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not stat file \"%s\": %m", cstoreFdwOptions->filename))); } (*totalPageCount) = PageCount(cstoreFdwOptions->filename); (*acquireSampleRowsFunc) = CStoreAcquireSampleRows; return true; } /* * CStoreAcquireSampleRows acquires a random sample of rows from the foreign * table. Selected rows are returned in the caller allocated sampleRows array, * which must have at least target row count entries. The actual number of rows * selected is returned as the function result. We also count the number of rows * in the collection and return it in total row count. We also always set dead * row count to zero. * * Note that the returned list of rows does not always follow their actual order * in the cstore file. Therefore, correlation estimates derived later could be * inaccurate, but that's OK. We currently don't use correlation estimates (the * planner only pays attention to correlation for index scans). */ static int CStoreAcquireSampleRows(Relation relation, int logLevel, HeapTuple *sampleRows, int targetRowCount, double *totalRowCount, double *totalDeadRowCount) { int sampleRowCount = 0; double rowCount = 0.0; double rowCountToSkip = -1; /* -1 means not set yet */ double selectionState = 0; MemoryContext oldContext = CurrentMemoryContext; MemoryContext tupleContext = NULL; Datum *columnValues = NULL; bool *columnNulls = NULL; TupleTableSlot *scanTupleSlot = NULL; List *columnList = NIL; List *foreignPrivateList = NULL; ForeignScanState *scanState = NULL; ForeignScan *foreignScan = NULL; char *relationName = NULL; int executorFlags = 0; TupleDesc tupleDescriptor = RelationGetDescr(relation); uint32 columnCount = tupleDescriptor->natts; /* create list of columns of the relation */ uint32 columnIndex = 0; for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { Form_pg_attribute attributeForm = TupleDescAttr(tupleDescriptor, columnIndex); const Index tableId = 1; if (!attributeForm->attisdropped) { Var *column = makeVar(tableId, columnIndex + 1, attributeForm->atttypid, attributeForm->atttypmod, attributeForm->attcollation, 0); columnList = lappend(columnList, column); } } /* setup foreign scan plan node */ foreignPrivateList = list_make1(columnList); foreignScan = makeNode(ForeignScan); foreignScan->fdw_private = foreignPrivateList; /* set up tuple slot */ columnValues = palloc0(columnCount * sizeof(Datum)); columnNulls = palloc0(columnCount * sizeof(bool)); #if PG_VERSION_NUM >= 120000 scanTupleSlot = MakeTupleTableSlot(NULL, &TTSOpsVirtual); #elif PG_VERSION_NUM >= 110000 scanTupleSlot = MakeTupleTableSlot(NULL); #else scanTupleSlot = MakeTupleTableSlot(); #endif scanTupleSlot->tts_tupleDescriptor = tupleDescriptor; scanTupleSlot->tts_values = columnValues; scanTupleSlot->tts_isnull = columnNulls; /* setup scan state */ scanState = makeNode(ForeignScanState); scanState->ss.ss_currentRelation = relation; scanState->ss.ps.plan = (Plan *) foreignScan; scanState->ss.ss_ScanTupleSlot = scanTupleSlot; /* * Use per-tuple memory context to prevent leak of memory used to read and * parse rows from the file. */ tupleContext = AllocSetContextCreate(CurrentMemoryContext, "cstore_fdw temporary context", ALLOCSET_DEFAULT_SIZES); CStoreBeginForeignScan(scanState, executorFlags); /* prepare for sampling rows */ selectionState = anl_init_selection_state(targetRowCount); for (;;) { /* check for user-requested abort or sleep */ vacuum_delay_point(); memset(columnValues, 0, columnCount * sizeof(Datum)); memset(columnNulls, true, columnCount * sizeof(bool)); MemoryContextReset(tupleContext); MemoryContextSwitchTo(tupleContext); /* read the next record */ CStoreIterateForeignScan(scanState); MemoryContextSwitchTo(oldContext); /* if there are no more records to read, break */ if (TTS_EMPTY(scanTupleSlot)) { break; } /* * The first targetRowCount sample rows are simply copied into the * reservoir. Then we start replacing tuples in the sample until we * reach the end of the relation. This algorithm is from Jeff Vitter's * paper (see more info in commands/analyze.c). */ if (sampleRowCount < targetRowCount) { sampleRows[sampleRowCount] = heap_form_tuple(tupleDescriptor, columnValues, columnNulls); sampleRowCount++; } else { /* * t in Vitter's paper is the number of records already processed. * If we need to compute a new S value, we must use the "not yet * incremented" value of rowCount as t. */ if (rowCountToSkip < 0) { rowCountToSkip = anl_get_next_S(rowCount, targetRowCount, &selectionState); } if (rowCountToSkip <= 0) { /* * Found a suitable tuple, so save it, replacing one old tuple * at random. */ int rowIndex = (int) (targetRowCount * anl_random_fract()); Assert(rowIndex >= 0); Assert(rowIndex < targetRowCount); heap_freetuple(sampleRows[rowIndex]); sampleRows[rowIndex] = heap_form_tuple(tupleDescriptor, columnValues, columnNulls); } rowCountToSkip--; } rowCount++; } /* clean up */ MemoryContextDelete(tupleContext); pfree(columnValues); pfree(columnNulls); CStoreEndForeignScan(scanState); /* emit some interesting relation info */ relationName = RelationGetRelationName(relation); ereport(logLevel, (errmsg("\"%s\": file contains %.0f rows; %d rows in sample", relationName, rowCount, sampleRowCount))); (*totalRowCount) = rowCount; (*totalDeadRowCount) = 0; return sampleRowCount; } /* * CStorePlanForeignModify checks if operation is supported. Only insert * command with subquery (ie insert into
select ...) is supported. * Other forms of insert, delete, and update commands are not supported. It * throws an error when the command is not supported. */ static List * CStorePlanForeignModify(PlannerInfo *plannerInfo, ModifyTable *plan, Index resultRelation, int subplanIndex) { bool operationSupported = false; if (plan->operation == CMD_INSERT) { ListCell *tableCell = NULL; Query *query = NULL; /* * Only insert operation with select subquery is supported. Other forms * of insert, update, and delete operations are not supported. */ query = plannerInfo->parse; foreach(tableCell, query->rtable) { RangeTblEntry *tableEntry = lfirst(tableCell); if (tableEntry->rtekind == RTE_SUBQUERY && tableEntry->subquery != NULL && tableEntry->subquery->commandType == CMD_SELECT) { operationSupported = true; break; } } } if (!operationSupported) { ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("operation is not supported"))); } return NIL; } /* * CStoreBeginForeignModify prepares cstore table for a modification. * Only insert is currently supported. */ static void CStoreBeginForeignModify(ModifyTableState *modifyTableState, ResultRelInfo *relationInfo, List *fdwPrivate, int subplanIndex, int executorFlags) { /* if Explain with no Analyze, do nothing */ if (executorFlags & EXEC_FLAG_EXPLAIN_ONLY) { return; } Assert (modifyTableState->operation == CMD_INSERT); CStoreBeginForeignInsert(modifyTableState, relationInfo); } /* * CStoreBeginForeignInsert prepares a cstore table for an insert or rows * coming from a COPY. */ static void CStoreBeginForeignInsert(ModifyTableState *modifyTableState, ResultRelInfo *relationInfo) { Oid foreignTableOid = InvalidOid; CStoreFdwOptions *cstoreFdwOptions = NULL; TupleDesc tupleDescriptor = NULL; TableWriteState *writeState = NULL; Relation relation = NULL; foreignTableOid = RelationGetRelid(relationInfo->ri_RelationDesc); relation = heap_open(foreignTableOid, ShareUpdateExclusiveLock); cstoreFdwOptions = CStoreGetOptions(foreignTableOid); tupleDescriptor = RelationGetDescr(relationInfo->ri_RelationDesc); writeState = CStoreBeginWrite(cstoreFdwOptions->filename, cstoreFdwOptions->compressionType, cstoreFdwOptions->stripeRowCount, cstoreFdwOptions->blockRowCount, tupleDescriptor); writeState->relation = relation; relationInfo->ri_FdwState = (void *) writeState; } /* * CStoreExecForeignInsert inserts a single row to cstore table * and returns inserted row's data values. */ static TupleTableSlot * CStoreExecForeignInsert(EState *executorState, ResultRelInfo *relationInfo, TupleTableSlot *tupleSlot, TupleTableSlot *planSlot) { TableWriteState *writeState = (TableWriteState*) relationInfo->ri_FdwState; HeapTuple heapTuple; Assert(writeState != NULL); heapTuple = GetSlotHeapTuple(tupleSlot); if (HeapTupleHasExternal(heapTuple)) { /* detoast any toasted attributes */ HeapTuple newTuple = toast_flatten_tuple(heapTuple, tupleSlot->tts_tupleDescriptor); ExecForceStoreHeapTuple(newTuple, tupleSlot, true); } slot_getallattrs(tupleSlot); CStoreWriteRow(writeState, tupleSlot->tts_values, tupleSlot->tts_isnull); return tupleSlot; } /* * CStoreEndForeignModify ends the current modification. Only insert is currently * supported. */ static void CStoreEndForeignModify(EState *executorState, ResultRelInfo *relationInfo) { CStoreEndForeignInsert(executorState, relationInfo); } /* * CStoreEndForeignInsert ends the current insert or COPY operation. */ static void CStoreEndForeignInsert(EState *executorState, ResultRelInfo *relationInfo) { TableWriteState *writeState = (TableWriteState*) relationInfo->ri_FdwState; /* writeState is NULL during Explain queries */ if (writeState != NULL) { Relation relation = writeState->relation; CStoreEndWrite(writeState); heap_close(relation, ShareUpdateExclusiveLock); } } #if PG_VERSION_NUM >= 90600 /* * CStoreIsForeignScanParallelSafe always returns true to indicate that * reading from a cstore_fdw table in a parallel worker is safe. This * does not enable parallelism for queries on individual cstore_fdw * tables, but does allow parallel scans of cstore_fdw partitions. * * cstore_fdw is parallel-safe because all writes are immediately committed * to disk and then read from disk. There is no uncommitted state that needs * to be shared across processes. */ static bool CStoreIsForeignScanParallelSafe(PlannerInfo *root, RelOptInfo *rel, RangeTblEntry *rte) { return true; } #endif cstore_fdw-1.7.0/cstore_fdw.control000066400000000000000000000002411362275575300174330ustar00rootroot00000000000000# cstore_fdw extension comment = 'foreign-data wrapper for flat cstore access' default_version = '1.7' module_pathname = '$libdir/cstore_fdw' relocatable = true cstore_fdw-1.7.0/cstore_fdw.h000066400000000000000000000237171362275575300162170ustar00rootroot00000000000000/*------------------------------------------------------------------------- * * cstore_fdw.h * * Type and function declarations for CStore foreign data wrapper. * * Copyright (c) 2016, Citus Data, Inc. * * $Id$ * *------------------------------------------------------------------------- */ #ifndef CSTORE_FDW_H #define CSTORE_FDW_H #include "access/tupdesc.h" #include "fmgr.h" #include "catalog/pg_am.h" #include "catalog/pg_foreign_server.h" #include "catalog/pg_foreign_table.h" #include "lib/stringinfo.h" #include "utils/rel.h" /* Defines for valid option names */ #define OPTION_NAME_FILENAME "filename" #define OPTION_NAME_COMPRESSION_TYPE "compression" #define OPTION_NAME_STRIPE_ROW_COUNT "stripe_row_count" #define OPTION_NAME_BLOCK_ROW_COUNT "block_row_count" /* Default values for option parameters */ #define DEFAULT_COMPRESSION_TYPE COMPRESSION_NONE #define DEFAULT_STRIPE_ROW_COUNT 150000 #define DEFAULT_BLOCK_ROW_COUNT 10000 /* Limits for option parameters */ #define STRIPE_ROW_COUNT_MINIMUM 1000 #define STRIPE_ROW_COUNT_MAXIMUM 10000000 #define BLOCK_ROW_COUNT_MINIMUM 1000 #define BLOCK_ROW_COUNT_MAXIMUM 100000 /* String representations of compression types */ #define COMPRESSION_STRING_NONE "none" #define COMPRESSION_STRING_PG_LZ "pglz" #define COMPRESSION_STRING_DELIMITED_LIST "none, pglz" /* CStore file signature */ #define CSTORE_MAGIC_NUMBER "citus_cstore" #define CSTORE_VERSION_MAJOR 1 #define CSTORE_VERSION_MINOR 7 /* miscellaneous defines */ #define CSTORE_FDW_NAME "cstore_fdw" #define CSTORE_FOOTER_FILE_SUFFIX ".footer" #define CSTORE_TEMP_FILE_SUFFIX ".tmp" #define CSTORE_TUPLE_COST_MULTIPLIER 10 #define CSTORE_POSTSCRIPT_SIZE_LENGTH 1 #define CSTORE_POSTSCRIPT_SIZE_MAX 256 /* table containing information about how to partition distributed tables */ #define CITUS_EXTENSION_NAME "citus" #define CITUS_PARTITION_TABLE_NAME "pg_dist_partition" /* human-readable names for addressing columns of the pg_dist_partition table */ #define ATTR_NUM_PARTITION_RELATION_ID 1 #define ATTR_NUM_PARTITION_TYPE 2 #define ATTR_NUM_PARTITION_KEY 3 /* * CStoreValidOption keeps an option name and a context. When an option is passed * into cstore_fdw objects (server and foreign table), we compare this option's * name and context against those of valid options. */ typedef struct CStoreValidOption { const char *optionName; Oid optionContextId; } CStoreValidOption; /* Array of options that are valid for cstore_fdw */ static const uint32 ValidOptionCount = 4; static const CStoreValidOption ValidOptionArray[] = { /* foreign table options */ { OPTION_NAME_FILENAME, ForeignTableRelationId }, { OPTION_NAME_COMPRESSION_TYPE, ForeignTableRelationId }, { OPTION_NAME_STRIPE_ROW_COUNT, ForeignTableRelationId }, { OPTION_NAME_BLOCK_ROW_COUNT, ForeignTableRelationId } }; /* Enumaration for cstore file's compression method */ typedef enum { COMPRESSION_TYPE_INVALID = -1, COMPRESSION_NONE = 0, COMPRESSION_PG_LZ = 1, COMPRESSION_COUNT } CompressionType; /* * CStoreFdwOptions holds the option values to be used when reading or writing * a cstore file. To resolve these values, we first check foreign table's options, * and if not present, we then fall back to the default values specified above. */ typedef struct CStoreFdwOptions { char *filename; CompressionType compressionType; uint64 stripeRowCount; uint32 blockRowCount; } CStoreFdwOptions; /* * StripeMetadata represents information about a stripe. This information is * stored in the cstore file's footer. */ typedef struct StripeMetadata { uint64 fileOffset; uint64 skipListLength; uint64 dataLength; uint64 footerLength; } StripeMetadata; /* TableFooter represents the footer of a cstore file. */ typedef struct TableFooter { List *stripeMetadataList; uint64 blockRowCount; } TableFooter; /* ColumnBlockSkipNode contains statistics for a ColumnBlockData. */ typedef struct ColumnBlockSkipNode { /* statistics about values of a column block */ bool hasMinMax; Datum minimumValue; Datum maximumValue; uint64 rowCount; /* * Offsets and sizes of value and exists streams in the column data. * These enable us to skip reading suppressed row blocks, and start reading * a block without reading previous blocks. */ uint64 valueBlockOffset; uint64 valueLength; uint64 existsBlockOffset; uint64 existsLength; CompressionType valueCompressionType; } ColumnBlockSkipNode; /* * StripeSkipList can be used for skipping row blocks. It contains a column block * skip node for each block of each column. blockSkipNodeArray[column][block] * is the entry for the specified column block. */ typedef struct StripeSkipList { ColumnBlockSkipNode **blockSkipNodeArray; uint32 columnCount; uint32 blockCount; } StripeSkipList; /* * ColumnBlockData represents a block of data in a column. valueArray stores * the values of data, and existsArray stores whether a value is present. * valueBuffer is used to store (uncompressed) serialized values * referenced by Datum's in valueArray. It is only used for by-reference Datum's. * There is a one-to-one correspondence between valueArray and existsArray. */ typedef struct ColumnBlockData { bool *existsArray; Datum *valueArray; /* valueBuffer keeps actual data for type-by-reference datums from valueArray. */ StringInfo valueBuffer; } ColumnBlockData; /* * ColumnBlockBuffers represents a block of serialized data in a column. * valueBuffer stores the serialized values of data, and existsBuffer stores * serialized value of presence information. valueCompressionType contains * compression type if valueBuffer is compressed. Finally rowCount has * the number of rows in this block. */ typedef struct ColumnBlockBuffers { StringInfo existsBuffer; StringInfo valueBuffer; CompressionType valueCompressionType; } ColumnBlockBuffers; /* * ColumnBuffers represents data buffers for a column in a row stripe. Each * column is made of multiple column blocks. */ typedef struct ColumnBuffers { ColumnBlockBuffers **blockBuffersArray; } ColumnBuffers; /* StripeBuffers represents data for a row stripe in a cstore file. */ typedef struct StripeBuffers { uint32 columnCount; uint32 rowCount; ColumnBuffers **columnBuffersArray; } StripeBuffers; /* * StripeFooter represents a stripe's footer. In this footer, we keep three * arrays of sizes. The number of elements in each of the arrays is equal * to the number of columns. */ typedef struct StripeFooter { uint32 columnCount; uint64 *skipListSizeArray; uint64 *existsSizeArray; uint64 *valueSizeArray; } StripeFooter; /* TableReadState represents state of a cstore file read operation. */ typedef struct TableReadState { FILE *tableFile; TableFooter *tableFooter; TupleDesc tupleDescriptor; /* * List of Var pointers for columns in the query. We use this both for * getting vector of projected columns, and also when we want to build * base constraint to find selected row blocks. */ List *projectedColumnList; List *whereClauseList; MemoryContext stripeReadContext; StripeBuffers *stripeBuffers; uint32 readStripeCount; uint64 stripeReadRowCount; ColumnBlockData **blockDataArray; int32 deserializedBlockIndex; } TableReadState; /* TableWriteState represents state of a cstore file write operation. */ typedef struct TableWriteState { FILE *tableFile; TableFooter *tableFooter; StringInfo tableFooterFilename; CompressionType compressionType; TupleDesc tupleDescriptor; FmgrInfo **comparisonFunctionArray; uint64 currentFileOffset; Relation relation; MemoryContext stripeWriteContext; StripeBuffers *stripeBuffers; StripeSkipList *stripeSkipList; uint32 stripeMaxRowCount; ColumnBlockData **blockDataArray; /* * compressionBuffer buffer is used as temporary storage during * data value compression operation. It is kept here to minimize * memory allocations. It lives in stripeWriteContext and gets * deallocated when memory context is reset. */ StringInfo compressionBuffer; } TableWriteState; /* Function declarations for extension loading and unloading */ extern void _PG_init(void); extern void _PG_fini(void); /* event trigger function declarations */ extern Datum cstore_ddl_event_end_trigger(PG_FUNCTION_ARGS); /* Function declarations for utility UDFs */ extern Datum cstore_table_size(PG_FUNCTION_ARGS); extern Datum cstore_clean_table_resources(PG_FUNCTION_ARGS); /* Function declarations for foreign data wrapper */ extern Datum cstore_fdw_handler(PG_FUNCTION_ARGS); extern Datum cstore_fdw_validator(PG_FUNCTION_ARGS); /* Function declarations for writing to a cstore file */ extern TableWriteState * CStoreBeginWrite(const char *filename, CompressionType compressionType, uint64 stripeMaxRowCount, uint32 blockRowCount, TupleDesc tupleDescriptor); extern void CStoreWriteRow(TableWriteState *state, Datum *columnValues, bool *columnNulls); extern void CStoreEndWrite(TableWriteState * state); /* Function declarations for reading from a cstore file */ extern TableReadState * CStoreBeginRead(const char *filename, TupleDesc tupleDescriptor, List *projectedColumnList, List *qualConditions); extern TableFooter * CStoreReadFooter(StringInfo tableFooterFilename); extern bool CStoreReadFinished(TableReadState *state); extern bool CStoreReadNextRow(TableReadState *state, Datum *columnValues, bool *columnNulls); extern void CStoreEndRead(TableReadState *state); /* Function declarations for common functions */ extern FmgrInfo * GetFunctionInfoOrNull(Oid typeId, Oid accessMethodId, int16 procedureId); extern ColumnBlockData ** CreateEmptyBlockDataArray(uint32 columnCount, bool *columnMask, uint32 blockRowCount); extern void FreeColumnBlockDataArray(ColumnBlockData **blockDataArray, uint32 columnCount); extern uint64 CStoreTableRowCount(const char *filename); extern bool CompressBuffer(StringInfo inputBuffer, StringInfo outputBuffer, CompressionType compressionType); extern StringInfo DecompressBuffer(StringInfo buffer, CompressionType compressionType); #endif /* CSTORE_FDW_H */ cstore_fdw-1.7.0/cstore_metadata_serialization.c000066400000000000000000000465651362275575300221550ustar00rootroot00000000000000/*------------------------------------------------------------------------- * * cstore_metadata_serialization.c * * This file contains function definitions for serializing/deserializing cstore * metadata. * * Copyright (c) 2016, Citus Data, Inc. * * $Id$ * *------------------------------------------------------------------------- */ #include "postgres.h" #include "cstore_fdw.h" #include "cstore_metadata_serialization.h" #include "cstore.pb-c.h" #include "access/tupmacs.h" /* local functions forward declarations */ static ProtobufCBinaryData DatumToProtobufBinary(Datum datum, bool typeByValue, int typeLength); static Datum ProtobufBinaryToDatum(ProtobufCBinaryData protobufBinary, bool typeByValue, int typeLength); /* * SerializePostScript serializes the given postscript and returns the result as * a StringInfo. */ StringInfo SerializePostScript(uint64 tableFooterLength) { StringInfo postscriptBuffer = NULL; Protobuf__PostScript protobufPostScript = PROTOBUF__POST_SCRIPT__INIT; uint8 *postscriptData = NULL; uint32 postscriptSize = 0; protobufPostScript.has_tablefooterlength = true; protobufPostScript.tablefooterlength = tableFooterLength; protobufPostScript.has_versionmajor = true; protobufPostScript.versionmajor = CSTORE_VERSION_MAJOR; protobufPostScript.has_versionminor = true; protobufPostScript.versionminor = CSTORE_VERSION_MINOR; protobufPostScript.magicnumber = pstrdup(CSTORE_MAGIC_NUMBER); postscriptSize = protobuf__post_script__get_packed_size(&protobufPostScript); postscriptData = palloc0(postscriptSize); protobuf__post_script__pack(&protobufPostScript, postscriptData); postscriptBuffer = palloc0(sizeof(StringInfoData)); postscriptBuffer->len = postscriptSize; postscriptBuffer->maxlen = postscriptSize; postscriptBuffer->data = (char *) postscriptData; return postscriptBuffer; } /* * SerializeTableFooter serializes the given table footer and returns the result * as a StringInfo. */ StringInfo SerializeTableFooter(TableFooter *tableFooter) { StringInfo tableFooterBuffer = NULL; Protobuf__TableFooter protobufTableFooter = PROTOBUF__TABLE_FOOTER__INIT; Protobuf__StripeMetadata **stripeMetadataArray = NULL; ListCell *stripeMetadataCell = NULL; uint8 *tableFooterData = NULL; uint32 tableFooterSize = 0; uint32 stripeIndex = 0; List *stripeMetadataList = tableFooter->stripeMetadataList; uint32 stripeCount = list_length(stripeMetadataList); stripeMetadataArray = palloc0(stripeCount * sizeof(Protobuf__StripeMetadata *)); foreach(stripeMetadataCell, stripeMetadataList) { StripeMetadata *stripeMetadata = lfirst(stripeMetadataCell); Protobuf__StripeMetadata *protobufStripeMetadata = NULL; protobufStripeMetadata = palloc0(sizeof(Protobuf__StripeMetadata)); protobuf__stripe_metadata__init(protobufStripeMetadata); protobufStripeMetadata->has_fileoffset = true; protobufStripeMetadata->fileoffset = stripeMetadata->fileOffset; protobufStripeMetadata->has_skiplistlength = true; protobufStripeMetadata->skiplistlength = stripeMetadata->skipListLength; protobufStripeMetadata->has_datalength = true; protobufStripeMetadata->datalength = stripeMetadata->dataLength; protobufStripeMetadata->has_footerlength = true; protobufStripeMetadata->footerlength = stripeMetadata->footerLength; stripeMetadataArray[stripeIndex] = protobufStripeMetadata; stripeIndex++; } protobufTableFooter.n_stripemetadataarray = stripeCount; protobufTableFooter.stripemetadataarray = stripeMetadataArray; protobufTableFooter.has_blockrowcount = true; protobufTableFooter.blockrowcount = tableFooter->blockRowCount; tableFooterSize = protobuf__table_footer__get_packed_size(&protobufTableFooter); tableFooterData = palloc0(tableFooterSize); protobuf__table_footer__pack(&protobufTableFooter, tableFooterData); tableFooterBuffer = palloc0(sizeof(StringInfoData)); tableFooterBuffer->len = tableFooterSize; tableFooterBuffer->maxlen = tableFooterSize; tableFooterBuffer->data = (char *) tableFooterData; return tableFooterBuffer; } /* * SerializeStripeFooter serializes given stripe footer and returns the result * as a StringInfo. */ StringInfo SerializeStripeFooter(StripeFooter *stripeFooter) { StringInfo stripeFooterBuffer = NULL; Protobuf__StripeFooter protobufStripeFooter = PROTOBUF__STRIPE_FOOTER__INIT; uint8 *stripeFooterData = NULL; uint32 stripeFooterSize = 0; protobufStripeFooter.n_skiplistsizearray = stripeFooter->columnCount; protobufStripeFooter.skiplistsizearray = (uint64_t *) stripeFooter->skipListSizeArray; protobufStripeFooter.n_existssizearray = stripeFooter->columnCount; protobufStripeFooter.existssizearray = (uint64_t *) stripeFooter->existsSizeArray; protobufStripeFooter.n_valuesizearray = stripeFooter->columnCount; protobufStripeFooter.valuesizearray = (uint64_t *) stripeFooter->valueSizeArray; stripeFooterSize = protobuf__stripe_footer__get_packed_size(&protobufStripeFooter); stripeFooterData = palloc0(stripeFooterSize); protobuf__stripe_footer__pack(&protobufStripeFooter, stripeFooterData); stripeFooterBuffer = palloc0(sizeof(StringInfoData)); stripeFooterBuffer->len = stripeFooterSize; stripeFooterBuffer->maxlen = stripeFooterSize; stripeFooterBuffer->data = (char *) stripeFooterData; return stripeFooterBuffer; } /* * SerializeColumnSkipList serializes a column skip list, where the colum skip * list includes all block skip nodes for that column. The function then returns * the result as a string info. */ StringInfo SerializeColumnSkipList(ColumnBlockSkipNode *blockSkipNodeArray, uint32 blockCount, bool typeByValue, int typeLength) { StringInfo blockSkipListBuffer = NULL; Protobuf__ColumnBlockSkipList protobufBlockSkipList = PROTOBUF__COLUMN_BLOCK_SKIP_LIST__INIT; Protobuf__ColumnBlockSkipNode **protobufBlockSkipNodeArray = NULL; uint32 blockIndex = 0; uint8 *blockSkipListData = NULL; uint32 blockSkipListSize = 0; protobufBlockSkipNodeArray = palloc0(blockCount * sizeof(Protobuf__ColumnBlockSkipNode *)); for (blockIndex = 0; blockIndex < blockCount; blockIndex++) { ColumnBlockSkipNode blockSkipNode = blockSkipNodeArray[blockIndex]; Protobuf__ColumnBlockSkipNode *protobufBlockSkipNode = NULL; ProtobufCBinaryData binaryMinimumValue = {0, 0}; ProtobufCBinaryData binaryMaximumValue = {0, 0}; if (blockSkipNode.hasMinMax) { binaryMinimumValue = DatumToProtobufBinary(blockSkipNode.minimumValue, typeByValue, typeLength); binaryMaximumValue = DatumToProtobufBinary(blockSkipNode.maximumValue, typeByValue, typeLength); } protobufBlockSkipNode = palloc0(sizeof(Protobuf__ColumnBlockSkipNode)); protobuf__column_block_skip_node__init(protobufBlockSkipNode); protobufBlockSkipNode->has_rowcount = true; protobufBlockSkipNode->rowcount = blockSkipNode.rowCount; protobufBlockSkipNode->has_minimumvalue = blockSkipNode.hasMinMax; protobufBlockSkipNode->minimumvalue = binaryMinimumValue; protobufBlockSkipNode->has_maximumvalue = blockSkipNode.hasMinMax; protobufBlockSkipNode->maximumvalue = binaryMaximumValue; protobufBlockSkipNode->has_valueblockoffset = true; protobufBlockSkipNode->valueblockoffset = blockSkipNode.valueBlockOffset; protobufBlockSkipNode->has_valuelength = true; protobufBlockSkipNode->valuelength = blockSkipNode.valueLength; protobufBlockSkipNode->has_existsblockoffset = true; protobufBlockSkipNode->existsblockoffset = blockSkipNode.existsBlockOffset; protobufBlockSkipNode->has_existslength = true; protobufBlockSkipNode->existslength = blockSkipNode.existsLength; protobufBlockSkipNode->has_valuecompressiontype = true; protobufBlockSkipNode->valuecompressiontype = (Protobuf__CompressionType) blockSkipNode.valueCompressionType; protobufBlockSkipNodeArray[blockIndex] = protobufBlockSkipNode; } protobufBlockSkipList.n_blockskipnodearray = blockCount; protobufBlockSkipList.blockskipnodearray = protobufBlockSkipNodeArray; blockSkipListSize = protobuf__column_block_skip_list__get_packed_size(&protobufBlockSkipList); blockSkipListData = palloc0(blockSkipListSize); protobuf__column_block_skip_list__pack(&protobufBlockSkipList, blockSkipListData); blockSkipListBuffer = palloc0(sizeof(StringInfoData)); blockSkipListBuffer->len = blockSkipListSize; blockSkipListBuffer->maxlen = blockSkipListSize; blockSkipListBuffer->data = (char *) blockSkipListData; return blockSkipListBuffer; } /* * DeserializePostScript deserializes the given postscript buffer and returns * the size of table footer in tableFooterLength pointer. */ void DeserializePostScript(StringInfo buffer, uint64 *tableFooterLength) { Protobuf__PostScript *protobufPostScript = NULL; protobufPostScript = protobuf__post_script__unpack(NULL, buffer->len, (uint8 *) buffer->data); if (protobufPostScript == NULL) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid postscript buffer"))); } if (protobufPostScript->versionmajor != CSTORE_VERSION_MAJOR || protobufPostScript->versionminor > CSTORE_VERSION_MINOR) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid column store version number"))); } else if (strncmp(protobufPostScript->magicnumber, CSTORE_MAGIC_NUMBER, NAMEDATALEN) != 0) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid magic number"))); } (*tableFooterLength) = protobufPostScript->tablefooterlength; protobuf__post_script__free_unpacked(protobufPostScript, NULL); } /* * DeserializeTableFooter deserializes the given buffer and returns the result as * a TableFooter struct. */ TableFooter * DeserializeTableFooter(StringInfo buffer) { TableFooter *tableFooter = NULL; Protobuf__TableFooter *protobufTableFooter = NULL; List *stripeMetadataList = NIL; uint64 blockRowCount = 0; uint32 stripeCount = 0; uint32 stripeIndex = 0; protobufTableFooter = protobuf__table_footer__unpack(NULL, buffer->len, (uint8 *) buffer->data); if (protobufTableFooter == NULL) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid table footer buffer"))); } if (!protobufTableFooter->has_blockrowcount) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("missing required table footer metadata fields"))); } else if (protobufTableFooter->blockrowcount < BLOCK_ROW_COUNT_MINIMUM || protobufTableFooter->blockrowcount > BLOCK_ROW_COUNT_MAXIMUM) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid block row count"))); } blockRowCount = protobufTableFooter->blockrowcount; stripeCount = protobufTableFooter->n_stripemetadataarray; for (stripeIndex = 0; stripeIndex < stripeCount; stripeIndex++) { StripeMetadata *stripeMetadata = NULL; Protobuf__StripeMetadata *protobufStripeMetadata = NULL; protobufStripeMetadata = protobufTableFooter->stripemetadataarray[stripeIndex]; if (!protobufStripeMetadata->has_fileoffset || !protobufStripeMetadata->has_skiplistlength || !protobufStripeMetadata->has_datalength || !protobufStripeMetadata->has_footerlength) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("missing required stripe metadata fields"))); } stripeMetadata = palloc0(sizeof(StripeMetadata)); stripeMetadata->fileOffset = protobufStripeMetadata->fileoffset; stripeMetadata->skipListLength = protobufStripeMetadata->skiplistlength; stripeMetadata->dataLength = protobufStripeMetadata->datalength; stripeMetadata->footerLength = protobufStripeMetadata->footerlength; stripeMetadataList = lappend(stripeMetadataList, stripeMetadata); } protobuf__table_footer__free_unpacked(protobufTableFooter, NULL); tableFooter = palloc0(sizeof(TableFooter)); tableFooter->stripeMetadataList = stripeMetadataList; tableFooter->blockRowCount = blockRowCount; return tableFooter; } /* * DeserializeStripeFooter deserializes the given buffer and returns the result * as a StripeFooter struct. */ StripeFooter * DeserializeStripeFooter(StringInfo buffer) { StripeFooter *stripeFooter = NULL; Protobuf__StripeFooter *protobufStripeFooter = NULL; uint64 *skipListSizeArray = NULL; uint64 *existsSizeArray = NULL; uint64 *valueSizeArray = NULL; uint64 sizeArrayLength = 0; uint32 columnCount = 0; protobufStripeFooter = protobuf__stripe_footer__unpack(NULL, buffer->len, (uint8 *) buffer->data); if (protobufStripeFooter == NULL) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid stripe footer buffer"))); } columnCount = protobufStripeFooter->n_skiplistsizearray; if (protobufStripeFooter->n_existssizearray != columnCount || protobufStripeFooter->n_valuesizearray != columnCount) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("stripe size array lengths don't match"))); } sizeArrayLength = columnCount * sizeof(uint64); skipListSizeArray = palloc0(sizeArrayLength); existsSizeArray = palloc0(sizeArrayLength); valueSizeArray = palloc0(sizeArrayLength); memcpy(skipListSizeArray, protobufStripeFooter->skiplistsizearray, sizeArrayLength); memcpy(existsSizeArray, protobufStripeFooter->existssizearray, sizeArrayLength); memcpy(valueSizeArray, protobufStripeFooter->valuesizearray, sizeArrayLength); protobuf__stripe_footer__free_unpacked(protobufStripeFooter, NULL); stripeFooter = palloc0(sizeof(StripeFooter)); stripeFooter->skipListSizeArray = skipListSizeArray; stripeFooter->existsSizeArray = existsSizeArray; stripeFooter->valueSizeArray = valueSizeArray; stripeFooter->columnCount = columnCount; return stripeFooter; } /* * DeserializeBlockCount deserializes the given column skip list buffer and * returns the number of blocks in column skip list. */ uint32 DeserializeBlockCount(StringInfo buffer) { uint32 blockCount = 0; Protobuf__ColumnBlockSkipList *protobufBlockSkipList = NULL; protobufBlockSkipList = protobuf__column_block_skip_list__unpack(NULL, buffer->len, (uint8 *) buffer->data); if (protobufBlockSkipList == NULL) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid skip list buffer"))); } blockCount = protobufBlockSkipList->n_blockskipnodearray; protobuf__column_block_skip_list__free_unpacked(protobufBlockSkipList, NULL); return blockCount; } /* * DeserializeRowCount deserializes the given column skip list buffer and * returns the total number of rows in block skip list. */ uint32 DeserializeRowCount(StringInfo buffer) { uint32 rowCount = 0; Protobuf__ColumnBlockSkipList *protobufBlockSkipList = NULL; uint32 blockIndex = 0; uint32 blockCount = 0; protobufBlockSkipList = protobuf__column_block_skip_list__unpack(NULL, buffer->len, (uint8 *) buffer->data); if (protobufBlockSkipList == NULL) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid skip list buffer"))); } blockCount = (uint32) protobufBlockSkipList->n_blockskipnodearray; for (blockIndex = 0; blockIndex < blockCount; blockIndex++) { Protobuf__ColumnBlockSkipNode *protobufBlockSkipNode = protobufBlockSkipList->blockskipnodearray[blockIndex]; rowCount += protobufBlockSkipNode->rowcount; } protobuf__column_block_skip_list__free_unpacked(protobufBlockSkipList, NULL); return rowCount; } /* * DeserializeColumnSkipList deserializes the given buffer and returns the result as * a ColumnBlockSkipNode array. If the number of unpacked block skip nodes are not * equal to the given block count function errors out. */ ColumnBlockSkipNode * DeserializeColumnSkipList(StringInfo buffer, bool typeByValue, int typeLength, uint32 blockCount) { ColumnBlockSkipNode *blockSkipNodeArray = NULL; uint32 blockIndex = 0; Protobuf__ColumnBlockSkipList *protobufBlockSkipList = NULL; protobufBlockSkipList = protobuf__column_block_skip_list__unpack(NULL, buffer->len, (uint8 *) buffer->data); if (protobufBlockSkipList == NULL) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("invalid skip list buffer"))); } if (protobufBlockSkipList->n_blockskipnodearray != blockCount) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("block skip node count and block count don't match"))); } blockSkipNodeArray = palloc0(blockCount * sizeof(ColumnBlockSkipNode)); for (blockIndex = 0; blockIndex < blockCount; blockIndex++) { Protobuf__ColumnBlockSkipNode *protobufBlockSkipNode = NULL; ColumnBlockSkipNode *blockSkipNode = NULL; bool hasMinMax = false; Datum minimumValue = 0; Datum maximumValue = 0; protobufBlockSkipNode = protobufBlockSkipList->blockskipnodearray[blockIndex]; if (!protobufBlockSkipNode->has_rowcount || !protobufBlockSkipNode->has_existsblockoffset || !protobufBlockSkipNode->has_valueblockoffset || !protobufBlockSkipNode->has_existslength || !protobufBlockSkipNode->has_valuelength || !protobufBlockSkipNode->has_valuecompressiontype) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("missing required block skip node metadata"))); } if (protobufBlockSkipNode->has_minimumvalue != protobufBlockSkipNode->has_maximumvalue) { ereport(ERROR, (errmsg("could not unpack column store"), errdetail("has minimum and has maximum fields " "don't match"))); } hasMinMax = protobufBlockSkipNode->has_minimumvalue; if (hasMinMax) { minimumValue = ProtobufBinaryToDatum(protobufBlockSkipNode->minimumvalue, typeByValue, typeLength); maximumValue = ProtobufBinaryToDatum(protobufBlockSkipNode->maximumvalue, typeByValue, typeLength); } blockSkipNode = &blockSkipNodeArray[blockIndex]; blockSkipNode->rowCount = protobufBlockSkipNode->rowcount; blockSkipNode->hasMinMax = hasMinMax; blockSkipNode->minimumValue = minimumValue; blockSkipNode->maximumValue = maximumValue; blockSkipNode->existsBlockOffset = protobufBlockSkipNode->existsblockoffset; blockSkipNode->valueBlockOffset = protobufBlockSkipNode->valueblockoffset; blockSkipNode->existsLength = protobufBlockSkipNode->existslength; blockSkipNode->valueLength = protobufBlockSkipNode->valuelength; blockSkipNode->valueCompressionType = (CompressionType) protobufBlockSkipNode->valuecompressiontype; } protobuf__column_block_skip_list__free_unpacked(protobufBlockSkipList, NULL); return blockSkipNodeArray; } /* Converts a datum to a ProtobufCBinaryData. */ static ProtobufCBinaryData DatumToProtobufBinary(Datum datum, bool datumTypeByValue, int datumTypeLength) { ProtobufCBinaryData protobufBinary = {0, 0}; int datumLength = att_addlength_datum(0, datumTypeLength, datum); char *datumBuffer = palloc0(datumLength); if (datumTypeLength > 0) { if (datumTypeByValue) { store_att_byval(datumBuffer, datum, datumTypeLength); } else { memcpy(datumBuffer, DatumGetPointer(datum), datumTypeLength); } } else { memcpy(datumBuffer, DatumGetPointer(datum), datumLength); } protobufBinary.data = (uint8 *) datumBuffer; protobufBinary.len = datumLength; return protobufBinary; } /* Converts the given ProtobufCBinaryData to a Datum. */ static Datum ProtobufBinaryToDatum(ProtobufCBinaryData protobufBinary, bool datumTypeByValue, int datumTypeLength) { Datum datum = 0; /* * We copy the protobuf data so the result of this function lives even * after the unpacked protobuf struct is freed. */ char *binaryDataCopy = palloc0(protobufBinary.len); memcpy(binaryDataCopy, protobufBinary.data, protobufBinary.len); datum = fetch_att(binaryDataCopy, datumTypeByValue, datumTypeLength); return datum; } cstore_fdw-1.7.0/cstore_metadata_serialization.h000066400000000000000000000027411362275575300221460ustar00rootroot00000000000000/*------------------------------------------------------------------------- * * cstore_metadata_serialization.h * * Type and function declarations to serialize/deserialize cstore metadata. * * Copyright (c) 2016, Citus Data, Inc. * * $Id$ * *------------------------------------------------------------------------- */ #ifndef CSTORE_SERIALIZATION_H #define CSTORE_SERIALIZATION_H #include "catalog/pg_attribute.h" #include "nodes/pg_list.h" #include "lib/stringinfo.h" #include "cstore_fdw.h" /* Function declarations for metadata serialization */ extern StringInfo SerializePostScript(uint64 tableFooterLength); extern StringInfo SerializeTableFooter(TableFooter *tableFooter); extern StringInfo SerializeStripeFooter(StripeFooter *stripeFooter); extern StringInfo SerializeColumnSkipList(ColumnBlockSkipNode *blockSkipNodeArray, uint32 blockCount, bool typeByValue, int typeLength); /* Function declarations for metadata deserialization */ extern void DeserializePostScript(StringInfo buffer, uint64 *tableFooterLength); extern TableFooter * DeserializeTableFooter(StringInfo buffer); extern uint32 DeserializeBlockCount(StringInfo buffer); extern uint32 DeserializeRowCount(StringInfo buffer); extern StripeFooter * DeserializeStripeFooter(StringInfo buffer); extern ColumnBlockSkipNode * DeserializeColumnSkipList(StringInfo buffer, bool typeByValue, int typeLength, uint32 blockCount); #endif /* CSTORE_SERIALIZATION_H */ cstore_fdw-1.7.0/cstore_reader.c000066400000000000000000001250111362275575300166620ustar00rootroot00000000000000/*------------------------------------------------------------------------- * * cstore_reader.c * * This file contains function definitions for reading cstore files. This * includes the logic for reading file level metadata, reading row stripes, * and skipping unrelated row blocks and columns. * * Copyright (c) 2016, Citus Data, Inc. * * $Id$ * *------------------------------------------------------------------------- */ #include "postgres.h" #include "cstore_fdw.h" #include "cstore_metadata_serialization.h" #include "cstore_version_compat.h" #include "access/nbtree.h" #include "access/skey.h" #include "commands/defrem.h" #include "nodes/makefuncs.h" #if PG_VERSION_NUM >= 120000 #include "nodes/pathnodes.h" #include "nodes/nodeFuncs.h" #include "optimizer/optimizer.h" #else #include "optimizer/clauses.h" #include "optimizer/predtest.h" #include "optimizer/var.h" #endif #include "optimizer/restrictinfo.h" #include "port.h" #include "storage/fd.h" #include "utils/memutils.h" #include "utils/lsyscache.h" #include "utils/rel.h" /* static function declarations */ static StripeBuffers * LoadFilteredStripeBuffers(FILE *tableFile, StripeMetadata *stripeMetadata, TupleDesc tupleDescriptor, List *projectedColumnList, List *whereClauseList); static void ReadStripeNextRow(StripeBuffers *stripeBuffers, List *projectedColumnList, uint64 blockIndex, uint64 blockRowIndex, ColumnBlockData **blockDataArray, Datum *columnValues, bool *columnNulls); static ColumnBuffers * LoadColumnBuffers(FILE *tableFile, ColumnBlockSkipNode *blockSkipNodeArray, uint32 blockCount, uint64 existsFileOffset, uint64 valueFileOffset, Form_pg_attribute attributeForm); static StripeFooter * LoadStripeFooter(FILE *tableFile, StripeMetadata *stripeMetadata, uint32 columnCount); static StripeSkipList * LoadStripeSkipList(FILE *tableFile, StripeMetadata *stripeMetadata, StripeFooter *stripeFooter, uint32 columnCount, bool *projectedColumnMask, TupleDesc tupleDescriptor); static bool * SelectedBlockMask(StripeSkipList *stripeSkipList, List *projectedColumnList, List *whereClauseList); static List * BuildRestrictInfoList(List *whereClauseList); static Node * BuildBaseConstraint(Var *variable); static OpExpr * MakeOpExpression(Var *variable, int16 strategyNumber); static Oid GetOperatorByType(Oid typeId, Oid accessMethodId, int16 strategyNumber); static void UpdateConstraint(Node *baseConstraint, Datum minValue, Datum maxValue); static StripeSkipList * SelectedBlockSkipList(StripeSkipList *stripeSkipList, bool *projectedColumnMask, bool *selectedBlockMask); static uint32 StripeSkipListRowCount(StripeSkipList *stripeSkipList); static bool * ProjectedColumnMask(uint32 columnCount, List *projectedColumnList); static void DeserializeBoolArray(StringInfo boolArrayBuffer, bool *boolArray, uint32 boolArrayLength); static void DeserializeDatumArray(StringInfo datumBuffer, bool *existsArray, uint32 datumCount, bool datumTypeByValue, int datumTypeLength, char datumTypeAlign, Datum *datumArray); static void DeserializeBlockData(StripeBuffers *stripeBuffers, uint64 blockIndex, uint32 rowCount, ColumnBlockData **blockDataArray, TupleDesc tupleDescriptor); static Datum ColumnDefaultValue(TupleConstr *tupleConstraints, Form_pg_attribute attributeForm); static int64 FILESize(FILE *file); static StringInfo ReadFromFile(FILE *file, uint64 offset, uint32 size); static void ResetUncompressedBlockData(ColumnBlockData **blockDataArray, uint32 columnCount); static uint64 StripeRowCount(FILE *tableFile, StripeMetadata *stripeMetadata); /* * CStoreBeginRead initializes a cstore read operation. This function returns a * read handle that's used during reading rows and finishing the read operation. */ TableReadState * CStoreBeginRead(const char *filename, TupleDesc tupleDescriptor, List *projectedColumnList, List *whereClauseList) { TableReadState *readState = NULL; TableFooter *tableFooter = NULL; FILE *tableFile = NULL; MemoryContext stripeReadContext = NULL; uint32 columnCount = 0; bool *projectedColumnMask = NULL; ColumnBlockData **blockDataArray = NULL; StringInfo tableFooterFilename = makeStringInfo(); appendStringInfo(tableFooterFilename, "%s%s", filename, CSTORE_FOOTER_FILE_SUFFIX); tableFooter = CStoreReadFooter(tableFooterFilename); pfree(tableFooterFilename->data); pfree(tableFooterFilename); tableFile = AllocateFile(filename, PG_BINARY_R); if (tableFile == NULL) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not open file \"%s\" for reading: %m", filename))); } /* * We allocate all stripe specific data in the stripeReadContext, and reset * this memory context before loading a new stripe. This is to avoid memory * leaks. */ stripeReadContext = AllocSetContextCreate(CurrentMemoryContext, "Stripe Read Memory Context", ALLOCSET_DEFAULT_SIZES); columnCount = tupleDescriptor->natts; projectedColumnMask = ProjectedColumnMask(columnCount, projectedColumnList); blockDataArray = CreateEmptyBlockDataArray(columnCount, projectedColumnMask, tableFooter->blockRowCount); readState = palloc0(sizeof(TableReadState)); readState->tableFile = tableFile; readState->tableFooter = tableFooter; readState->projectedColumnList = projectedColumnList; readState->whereClauseList = whereClauseList; readState->stripeBuffers = NULL; readState->readStripeCount = 0; readState->stripeReadRowCount = 0; readState->tupleDescriptor = tupleDescriptor; readState->stripeReadContext = stripeReadContext; readState->blockDataArray = blockDataArray; readState->deserializedBlockIndex = -1; return readState; } /* * CStoreReadFooter reads the cstore file footer from the given file. First, the * function reads the last byte of the file as the postscript size. Then, the * function reads the postscript. Last, the function reads and deserializes the * footer. */ TableFooter * CStoreReadFooter(StringInfo tableFooterFilename) { TableFooter *tableFooter = NULL; FILE *tableFooterFile = NULL; uint64 footerOffset = 0; uint64 footerLength = 0; StringInfo postscriptBuffer = NULL; StringInfo postscriptSizeBuffer = NULL; uint64 postscriptSizeOffset = 0; uint8 postscriptSize = 0; uint64 footerFileSize = 0; uint64 postscriptOffset = 0; StringInfo footerBuffer = NULL; int freeResult = 0; tableFooterFile = AllocateFile(tableFooterFilename->data, PG_BINARY_R); if (tableFooterFile == NULL) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not open file \"%s\" for reading: %m", tableFooterFilename->data), errhint("Try copying in data to the table."))); } footerFileSize = FILESize(tableFooterFile); if (footerFileSize < CSTORE_POSTSCRIPT_SIZE_LENGTH) { ereport(ERROR, (errmsg("invalid cstore file"))); } postscriptSizeOffset = footerFileSize - CSTORE_POSTSCRIPT_SIZE_LENGTH; postscriptSizeBuffer = ReadFromFile(tableFooterFile, postscriptSizeOffset, CSTORE_POSTSCRIPT_SIZE_LENGTH); memcpy(&postscriptSize, postscriptSizeBuffer->data, CSTORE_POSTSCRIPT_SIZE_LENGTH); if (postscriptSize + CSTORE_POSTSCRIPT_SIZE_LENGTH > footerFileSize) { ereport(ERROR, (errmsg("invalid postscript size"))); } postscriptOffset = footerFileSize - (CSTORE_POSTSCRIPT_SIZE_LENGTH + postscriptSize); postscriptBuffer = ReadFromFile(tableFooterFile, postscriptOffset, postscriptSize); DeserializePostScript(postscriptBuffer, &footerLength); if (footerLength + postscriptSize + CSTORE_POSTSCRIPT_SIZE_LENGTH > footerFileSize) { ereport(ERROR, (errmsg("invalid footer size"))); } footerOffset = postscriptOffset - footerLength; footerBuffer = ReadFromFile(tableFooterFile, footerOffset, footerLength); tableFooter = DeserializeTableFooter(footerBuffer); freeResult = FreeFile(tableFooterFile); if (freeResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not close file: %m"))); } return tableFooter; } /* * CStoreReadNextRow tries to read a row from the cstore file. On success, it sets * column values and nulls, and returns true. If there are no more rows to read, * the function returns false. */ bool CStoreReadNextRow(TableReadState *readState, Datum *columnValues, bool *columnNulls) { uint32 blockIndex = 0; uint32 blockRowIndex = 0; TableFooter *tableFooter = readState->tableFooter; MemoryContext oldContext = NULL; /* * If no stripes are loaded, load the next non-empty stripe. Note that when * loading stripes, we skip over blocks whose contents can be filtered with * the query's restriction qualifiers. So, even when a stripe is physically * not empty, we may end up loading it as an empty stripe. */ while (readState->stripeBuffers == NULL) { StripeBuffers *stripeBuffers = NULL; StripeMetadata *stripeMetadata = NULL; List *stripeMetadataList = tableFooter->stripeMetadataList; uint32 stripeCount = list_length(stripeMetadataList); /* if we have read all stripes, return false */ if (readState->readStripeCount == stripeCount) { return false; } oldContext = MemoryContextSwitchTo(readState->stripeReadContext); MemoryContextReset(readState->stripeReadContext); stripeMetadata = list_nth(stripeMetadataList, readState->readStripeCount); stripeBuffers = LoadFilteredStripeBuffers(readState->tableFile, stripeMetadata, readState->tupleDescriptor, readState->projectedColumnList, readState->whereClauseList); readState->readStripeCount++; MemoryContextSwitchTo(oldContext); if (stripeBuffers->rowCount != 0) { readState->stripeBuffers = stripeBuffers; readState->stripeReadRowCount = 0; readState->deserializedBlockIndex = -1; ResetUncompressedBlockData(readState->blockDataArray, stripeBuffers->columnCount); break; } } blockIndex = readState->stripeReadRowCount / tableFooter->blockRowCount; blockRowIndex = readState->stripeReadRowCount % tableFooter->blockRowCount; if (blockIndex != readState->deserializedBlockIndex) { uint32 lastBlockIndex = 0; uint32 blockRowCount = 0; uint32 stripeRowCount = 0; stripeRowCount = readState->stripeBuffers->rowCount; lastBlockIndex = stripeRowCount / tableFooter->blockRowCount; if (blockIndex == lastBlockIndex) { blockRowCount = stripeRowCount % tableFooter->blockRowCount; } else { blockRowCount = tableFooter->blockRowCount; } oldContext = MemoryContextSwitchTo(readState->stripeReadContext); DeserializeBlockData(readState->stripeBuffers, blockIndex, blockRowCount, readState->blockDataArray, readState->tupleDescriptor); MemoryContextSwitchTo(oldContext); readState->deserializedBlockIndex = blockIndex; } ReadStripeNextRow(readState->stripeBuffers, readState->projectedColumnList, blockIndex, blockRowIndex, readState->blockDataArray, columnValues, columnNulls); /* * If we finished reading the current stripe, set stripe data to NULL. That * way, we will load a new stripe the next time this function gets called. */ readState->stripeReadRowCount++; if (readState->stripeReadRowCount == readState->stripeBuffers->rowCount) { readState->stripeBuffers = NULL; } return true; } /* Finishes a cstore read operation. */ void CStoreEndRead(TableReadState *readState) { int columnCount = readState->tupleDescriptor->natts; MemoryContextDelete(readState->stripeReadContext); FreeFile(readState->tableFile); list_free_deep(readState->tableFooter->stripeMetadataList); FreeColumnBlockDataArray(readState->blockDataArray, columnCount); pfree(readState->tableFooter); pfree(readState); } /* * CreateEmptyBlockDataArray creates data buffers to keep deserialized exist and * value arrays for requested columns in columnMask. */ ColumnBlockData ** CreateEmptyBlockDataArray(uint32 columnCount, bool *columnMask, uint32 blockRowCount) { uint32 columnIndex = 0; ColumnBlockData **blockDataArray = palloc0(columnCount * sizeof(ColumnBlockData*)); /* allocate block memory for deserialized data */ for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { if (columnMask[columnIndex]) { ColumnBlockData *blockData = palloc0(sizeof(ColumnBlockData)); blockData->existsArray = palloc0(blockRowCount * sizeof(bool)); blockData->valueArray = palloc0(blockRowCount * sizeof(Datum)); blockData->valueBuffer = NULL; blockDataArray[columnIndex] = blockData; } } return blockDataArray; } /* * FreeColumnBlockDataArray deallocates data buffers to keep deserialized exist and * value arrays for requested columns in columnMask. * ColumnBlockData->serializedValueBuffer lives in memory read/write context * so it is deallocated automatically when the context is deleted. */ void FreeColumnBlockDataArray(ColumnBlockData **blockDataArray, uint32 columnCount) { uint32 columnIndex = 0; for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBlockData *blockData = blockDataArray[columnIndex]; if (blockData != NULL) { pfree(blockData->existsArray); pfree(blockData->valueArray); pfree(blockData); } } pfree(blockDataArray); } /* CStoreTableRowCount returns the exact row count of a table using skiplists */ uint64 CStoreTableRowCount(const char *filename) { TableFooter *tableFooter = NULL; FILE *tableFile; ListCell *stripeMetadataCell = NULL; uint64 totalRowCount = 0; StringInfo tableFooterFilename = makeStringInfo(); appendStringInfo(tableFooterFilename, "%s%s", filename, CSTORE_FOOTER_FILE_SUFFIX); tableFooter = CStoreReadFooter(tableFooterFilename); pfree(tableFooterFilename->data); pfree(tableFooterFilename); tableFile = AllocateFile(filename, PG_BINARY_R); if (tableFile == NULL) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not open file \"%s\" for reading: %m", filename))); } foreach(stripeMetadataCell, tableFooter->stripeMetadataList) { StripeMetadata *stripeMetadata = (StripeMetadata *) lfirst(stripeMetadataCell); totalRowCount += StripeRowCount(tableFile, stripeMetadata); } FreeFile(tableFile); return totalRowCount; } /* * StripeRowCount reads serialized stripe footer, the first column's * skip list, and returns number of rows for given stripe. */ static uint64 StripeRowCount(FILE *tableFile, StripeMetadata *stripeMetadata) { uint64 rowCount = 0; StripeFooter *stripeFooter = NULL; StringInfo footerBuffer = NULL; StringInfo firstColumnSkipListBuffer = NULL; uint64 footerOffset = 0; footerOffset += stripeMetadata->fileOffset; footerOffset += stripeMetadata->skipListLength; footerOffset += stripeMetadata->dataLength; footerBuffer = ReadFromFile(tableFile, footerOffset, stripeMetadata->footerLength); stripeFooter = DeserializeStripeFooter(footerBuffer); firstColumnSkipListBuffer = ReadFromFile(tableFile, stripeMetadata->fileOffset, stripeFooter->skipListSizeArray[0]); rowCount = DeserializeRowCount(firstColumnSkipListBuffer); return rowCount; } /* * LoadFilteredStripeBuffers reads serialized stripe data from the given file. * The function skips over blocks whose rows are refuted by restriction qualifiers, * and only loads columns that are projected in the query. */ static StripeBuffers * LoadFilteredStripeBuffers(FILE *tableFile, StripeMetadata *stripeMetadata, TupleDesc tupleDescriptor, List *projectedColumnList, List *whereClauseList) { StripeBuffers *stripeBuffers = NULL; ColumnBuffers **columnBuffersArray = NULL; uint64 currentColumnFileOffset = 0; uint32 columnIndex = 0; uint32 columnCount = tupleDescriptor->natts; StripeFooter *stripeFooter = LoadStripeFooter(tableFile, stripeMetadata, columnCount); bool *projectedColumnMask = ProjectedColumnMask(columnCount, projectedColumnList); StripeSkipList *stripeSkipList = LoadStripeSkipList(tableFile, stripeMetadata, stripeFooter, columnCount, projectedColumnMask, tupleDescriptor); bool *selectedBlockMask = SelectedBlockMask(stripeSkipList, projectedColumnList, whereClauseList); StripeSkipList *selectedBlockSkipList = SelectedBlockSkipList(stripeSkipList, projectedColumnMask, selectedBlockMask); /* load column data for projected columns */ columnBuffersArray = palloc0(columnCount * sizeof(ColumnBuffers *)); currentColumnFileOffset = stripeMetadata->fileOffset + stripeMetadata->skipListLength; for (columnIndex = 0; columnIndex < stripeFooter->columnCount; columnIndex++) { uint64 existsSize = stripeFooter->existsSizeArray[columnIndex]; uint64 valueSize = stripeFooter->valueSizeArray[columnIndex]; uint64 existsFileOffset = currentColumnFileOffset; uint64 valueFileOffset = currentColumnFileOffset + existsSize; if (projectedColumnMask[columnIndex]) { ColumnBlockSkipNode *blockSkipNode = selectedBlockSkipList->blockSkipNodeArray[columnIndex]; Form_pg_attribute attributeForm = TupleDescAttr(tupleDescriptor, columnIndex); uint32 blockCount = selectedBlockSkipList->blockCount; ColumnBuffers *columnBuffers = LoadColumnBuffers(tableFile, blockSkipNode, blockCount, existsFileOffset, valueFileOffset, attributeForm); columnBuffersArray[columnIndex] = columnBuffers; } currentColumnFileOffset += existsSize; currentColumnFileOffset += valueSize; } stripeBuffers = palloc0(sizeof(StripeBuffers)); stripeBuffers->columnCount = columnCount; stripeBuffers->rowCount = StripeSkipListRowCount(selectedBlockSkipList); stripeBuffers->columnBuffersArray = columnBuffersArray; return stripeBuffers; } /* * ReadStripeNextRow reads the next row from the given stripe, finds the projected * column values within this row, and accordingly sets the column values and nulls. * Note that this function sets the values for all non-projected columns to null. */ static void ReadStripeNextRow(StripeBuffers *stripeBuffers, List *projectedColumnList, uint64 blockIndex, uint64 blockRowIndex, ColumnBlockData **blockDataArray, Datum *columnValues, bool *columnNulls) { ListCell *projectedColumnCell = NULL; /* set all columns to null by default */ memset(columnNulls, 1, stripeBuffers->columnCount * sizeof(bool)); foreach(projectedColumnCell, projectedColumnList) { Var *projectedColumn = lfirst(projectedColumnCell); uint32 projectedColumnIndex = projectedColumn->varattno - 1; ColumnBlockData *blockData = blockDataArray[projectedColumnIndex]; if (blockData->existsArray[blockRowIndex]) { columnValues[projectedColumnIndex] = blockData->valueArray[blockRowIndex]; columnNulls[projectedColumnIndex] = false; } } } /* * LoadColumnBuffers reads serialized column data from the given file. These * column data are laid out as sequential blocks in the file; and block positions * and lengths are retrieved from the column block skip node array. */ static ColumnBuffers * LoadColumnBuffers(FILE *tableFile, ColumnBlockSkipNode *blockSkipNodeArray, uint32 blockCount, uint64 existsFileOffset, uint64 valueFileOffset, Form_pg_attribute attributeForm) { ColumnBuffers *columnBuffers = NULL; uint32 blockIndex = 0; ColumnBlockBuffers **blockBuffersArray = palloc0(blockCount * sizeof(ColumnBlockBuffers *)); for (blockIndex = 0; blockIndex < blockCount; blockIndex++) { blockBuffersArray[blockIndex] = palloc0(sizeof(ColumnBlockBuffers)); } /* * We first read the "exists" blocks. We don't read "values" array here, * because "exists" blocks are stored sequentially on disk, and we want to * minimize disk seeks. */ for (blockIndex = 0; blockIndex < blockCount; blockIndex++) { ColumnBlockSkipNode *blockSkipNode = &blockSkipNodeArray[blockIndex]; uint64 existsOffset = existsFileOffset + blockSkipNode->existsBlockOffset; StringInfo rawExistsBuffer = ReadFromFile(tableFile, existsOffset, blockSkipNode->existsLength); blockBuffersArray[blockIndex]->existsBuffer = rawExistsBuffer; } /* then read "values" blocks, which are also stored sequentially on disk */ for (blockIndex = 0; blockIndex < blockCount; blockIndex++) { ColumnBlockSkipNode *blockSkipNode = &blockSkipNodeArray[blockIndex]; CompressionType compressionType = blockSkipNode->valueCompressionType; uint64 valueOffset = valueFileOffset + blockSkipNode->valueBlockOffset; StringInfo rawValueBuffer = ReadFromFile(tableFile, valueOffset, blockSkipNode->valueLength); blockBuffersArray[blockIndex]->valueBuffer = rawValueBuffer; blockBuffersArray[blockIndex]->valueCompressionType = compressionType; } columnBuffers = palloc0(sizeof(ColumnBuffers)); columnBuffers->blockBuffersArray = blockBuffersArray; return columnBuffers; } /* Reads and returns the given stripe's footer. */ static StripeFooter * LoadStripeFooter(FILE *tableFile, StripeMetadata *stripeMetadata, uint32 columnCount) { StripeFooter *stripeFooter = NULL; StringInfo footerBuffer = NULL; uint64 footerOffset = 0; footerOffset += stripeMetadata->fileOffset; footerOffset += stripeMetadata->skipListLength; footerOffset += stripeMetadata->dataLength; footerBuffer = ReadFromFile(tableFile, footerOffset, stripeMetadata->footerLength); stripeFooter = DeserializeStripeFooter(footerBuffer); if (stripeFooter->columnCount > columnCount) { ereport(ERROR, (errmsg("stripe footer column count and table column count " "don't match"))); } return stripeFooter; } /* Reads the skip list for the given stripe. */ static StripeSkipList * LoadStripeSkipList(FILE *tableFile, StripeMetadata *stripeMetadata, StripeFooter *stripeFooter, uint32 columnCount, bool *projectedColumnMask, TupleDesc tupleDescriptor) { StripeSkipList *stripeSkipList = NULL; ColumnBlockSkipNode **blockSkipNodeArray = NULL; StringInfo firstColumnSkipListBuffer = NULL; uint64 currentColumnSkipListFileOffset = 0; uint32 columnIndex = 0; uint32 stripeBlockCount = 0; uint32 stripeColumnCount = stripeFooter->columnCount; /* deserialize block count */ firstColumnSkipListBuffer = ReadFromFile(tableFile, stripeMetadata->fileOffset, stripeFooter->skipListSizeArray[0]); stripeBlockCount = DeserializeBlockCount(firstColumnSkipListBuffer); /* deserialize column skip lists */ blockSkipNodeArray = palloc0(columnCount * sizeof(ColumnBlockSkipNode *)); currentColumnSkipListFileOffset = stripeMetadata->fileOffset; for (columnIndex = 0; columnIndex < stripeColumnCount; columnIndex++) { uint64 columnSkipListSize = stripeFooter->skipListSizeArray[columnIndex]; bool firstColumn = columnIndex == 0; /* * Only selected columns' column skip lists are read. However, the first * column's skip list is read regardless of being selected. It is used by * StripeSkipListRowCount later. */ if (projectedColumnMask[columnIndex] || firstColumn) { Form_pg_attribute attributeForm = TupleDescAttr(tupleDescriptor, columnIndex); StringInfo columnSkipListBuffer = ReadFromFile(tableFile, currentColumnSkipListFileOffset, columnSkipListSize); ColumnBlockSkipNode *columnSkipList = DeserializeColumnSkipList(columnSkipListBuffer, attributeForm->attbyval, attributeForm->attlen, stripeBlockCount); blockSkipNodeArray[columnIndex] = columnSkipList; } currentColumnSkipListFileOffset += columnSkipListSize; } /* table contains additional columns added after this stripe is created */ for (columnIndex = stripeColumnCount; columnIndex < columnCount; columnIndex++) { ColumnBlockSkipNode *columnSkipList = NULL; uint32 blockIndex = 0; bool firstColumn = columnIndex == 0; /* no need to create ColumnBlockSkipList if the column is not selected */ if (!projectedColumnMask[columnIndex] && !firstColumn) { blockSkipNodeArray[columnIndex] = NULL; continue; } /* create empty ColumnBlockSkipNode for missing columns*/ columnSkipList = palloc0(stripeBlockCount * sizeof(ColumnBlockSkipNode)); for (blockIndex = 0; blockIndex < stripeBlockCount; blockIndex++) { columnSkipList[blockIndex].rowCount = 0; columnSkipList[blockIndex].hasMinMax = false; columnSkipList[blockIndex].minimumValue = 0; columnSkipList[blockIndex].maximumValue = 0; columnSkipList[blockIndex].existsBlockOffset = 0; columnSkipList[blockIndex].valueBlockOffset = 0; columnSkipList[blockIndex].existsLength = 0; columnSkipList[blockIndex].valueLength = 0; columnSkipList[blockIndex].valueCompressionType = COMPRESSION_NONE; } blockSkipNodeArray[columnIndex] = columnSkipList; } stripeSkipList = palloc0(sizeof(StripeSkipList)); stripeSkipList->blockSkipNodeArray = blockSkipNodeArray; stripeSkipList->columnCount = columnCount; stripeSkipList->blockCount = stripeBlockCount; return stripeSkipList; } /* * SelectedBlockMask walks over each column's blocks and checks if a block can * be filtered without reading its data. The filtering happens when all rows in * the block can be refuted by the given qualifier conditions. */ static bool * SelectedBlockMask(StripeSkipList *stripeSkipList, List *projectedColumnList, List *whereClauseList) { bool *selectedBlockMask = NULL; ListCell *columnCell = NULL; uint32 blockIndex = 0; List *restrictInfoList = BuildRestrictInfoList(whereClauseList); selectedBlockMask = palloc0(stripeSkipList->blockCount * sizeof(bool)); memset(selectedBlockMask, true, stripeSkipList->blockCount * sizeof(bool)); foreach(columnCell, projectedColumnList) { Var *column = lfirst(columnCell); uint32 columnIndex = column->varattno - 1; FmgrInfo *comparisonFunction = NULL; Node *baseConstraint = NULL; /* if this column's data type doesn't have a comparator, skip it */ comparisonFunction = GetFunctionInfoOrNull(column->vartype, BTREE_AM_OID, BTORDER_PROC); if (comparisonFunction == NULL) { continue; } baseConstraint = BuildBaseConstraint(column); for (blockIndex = 0; blockIndex < stripeSkipList->blockCount; blockIndex++) { bool predicateRefuted = false; List *constraintList = NIL; ColumnBlockSkipNode *blockSkipNodeArray = stripeSkipList->blockSkipNodeArray[columnIndex]; ColumnBlockSkipNode *blockSkipNode = &blockSkipNodeArray[blockIndex]; /* * A column block with comparable data type can miss min/max values * if all values in the block are NULL. */ if (!blockSkipNode->hasMinMax) { continue; } UpdateConstraint(baseConstraint, blockSkipNode->minimumValue, blockSkipNode->maximumValue); constraintList = list_make1(baseConstraint); #if (PG_VERSION_NUM >= 100000) predicateRefuted = predicate_refuted_by(constraintList, restrictInfoList, false); #else predicateRefuted = predicate_refuted_by(constraintList, restrictInfoList); #endif if (predicateRefuted) { selectedBlockMask[blockIndex] = false; } } } return selectedBlockMask; } /* * GetFunctionInfoOrNull first resolves the operator for the given data type, * access method, and support procedure. The function then uses the resolved * operator's identifier to fill in a function manager object, and returns * this object. This function is based on a similar function from CitusDB's code. */ FmgrInfo * GetFunctionInfoOrNull(Oid typeId, Oid accessMethodId, int16 procedureId) { FmgrInfo *functionInfo = NULL; Oid operatorClassId = InvalidOid; Oid operatorFamilyId = InvalidOid; Oid operatorId = InvalidOid; /* get default operator class from pg_opclass for datum type */ operatorClassId = GetDefaultOpClass(typeId, accessMethodId); if (operatorClassId == InvalidOid) { return NULL; } operatorFamilyId = get_opclass_family(operatorClassId); if (operatorFamilyId == InvalidOid) { return NULL; } operatorId = get_opfamily_proc(operatorFamilyId, typeId, typeId, procedureId); if (operatorId != InvalidOid) { functionInfo = (FmgrInfo *) palloc0(sizeof(FmgrInfo)); /* fill in the FmgrInfo struct using the operatorId */ fmgr_info(operatorId, functionInfo); } return functionInfo; } /* * BuildRestrictInfoList builds restrict info list using the selection criteria, * and then return this list. The function is copied from CitusDB's shard pruning * logic. */ static List * BuildRestrictInfoList(List *whereClauseList) { List *restrictInfoList = NIL; ListCell *qualCell = NULL; foreach(qualCell, whereClauseList) { RestrictInfo *restrictInfo = NULL; Node *qualNode = (Node *) lfirst(qualCell); restrictInfo = make_simple_restrictinfo((Expr *) qualNode); restrictInfoList = lappend(restrictInfoList, restrictInfo); } return restrictInfoList; } /* * BuildBaseConstraint builds and returns a base constraint. This constraint * implements an expression in the form of (var <= max && var >= min), where * min and max values represent a block's min and max values. These block * values are filled in after the constraint is built. This function is based * on a similar function from CitusDB's shard pruning logic. */ static Node * BuildBaseConstraint(Var *variable) { Node *baseConstraint = NULL; OpExpr *lessThanExpr = NULL; OpExpr *greaterThanExpr = NULL; lessThanExpr = MakeOpExpression(variable, BTLessEqualStrategyNumber); greaterThanExpr = MakeOpExpression(variable, BTGreaterEqualStrategyNumber); baseConstraint = make_and_qual((Node *) lessThanExpr, (Node *) greaterThanExpr); return baseConstraint; } /* * MakeOpExpression builds an operator expression node. This operator expression * implements the operator clause as defined by the variable and the strategy * number. The function is copied from CitusDB's shard pruning logic. */ static OpExpr * MakeOpExpression(Var *variable, int16 strategyNumber) { Oid typeId = variable->vartype; Oid typeModId = variable->vartypmod; Oid collationId = variable->varcollid; Oid accessMethodId = BTREE_AM_OID; Oid operatorId = InvalidOid; Const *constantValue = NULL; OpExpr *expression = NULL; /* Load the operator from system catalogs */ operatorId = GetOperatorByType(typeId, accessMethodId, strategyNumber); constantValue = makeNullConst(typeId, typeModId, collationId); /* Now make the expression with the given variable and a null constant */ expression = (OpExpr *) make_opclause(operatorId, InvalidOid, /* no result type yet */ false, /* no return set */ (Expr *) variable, (Expr *) constantValue, InvalidOid, collationId); /* Set implementing function id and result type */ expression->opfuncid = get_opcode(operatorId); expression->opresulttype = get_func_rettype(expression->opfuncid); return expression; } /* * GetOperatorByType returns operator Oid for the given type, access method, * and strategy number. Note that this function incorrectly errors out when * the given type doesn't have its own operator but can use another compatible * type's default operator. The function is copied from CitusDB's shard pruning * logic. */ static Oid GetOperatorByType(Oid typeId, Oid accessMethodId, int16 strategyNumber) { /* Get default operator class from pg_opclass */ Oid operatorClassId = GetDefaultOpClass(typeId, accessMethodId); Oid operatorFamily = get_opclass_family(operatorClassId); Oid operatorId = get_opfamily_member(operatorFamily, typeId, typeId, strategyNumber); return operatorId; } /* * UpdateConstraint updates the base constraint with the given min/max values. * The function is copied from CitusDB's shard pruning logic. */ static void UpdateConstraint(Node *baseConstraint, Datum minValue, Datum maxValue) { BoolExpr *andExpr = (BoolExpr *) baseConstraint; Node *lessThanExpr = (Node *) linitial(andExpr->args); Node *greaterThanExpr = (Node *) lsecond(andExpr->args); Node *minNode = get_rightop((Expr *) greaterThanExpr); Node *maxNode = get_rightop((Expr *) lessThanExpr); Const *minConstant = NULL; Const *maxConstant = NULL; Assert(IsA(minNode, Const)); Assert(IsA(maxNode, Const)); minConstant = (Const *) minNode; maxConstant = (Const *) maxNode; minConstant->constvalue = minValue; maxConstant->constvalue = maxValue; minConstant->constisnull = false; maxConstant->constisnull = false; minConstant->constbyval = true; maxConstant->constbyval = true; } /* * SelectedBlockSkipList constructs a new StripeSkipList in which the * non-selected blocks are removed from the given stripeSkipList. */ static StripeSkipList * SelectedBlockSkipList(StripeSkipList *stripeSkipList, bool *projectedColumnMask, bool *selectedBlockMask) { StripeSkipList *SelectedBlockSkipList = NULL; ColumnBlockSkipNode **selectedBlockSkipNodeArray = NULL; uint32 selectedBlockCount = 0; uint32 blockIndex = 0; uint32 columnIndex = 0; uint32 columnCount = stripeSkipList->columnCount; for (blockIndex = 0; blockIndex < stripeSkipList->blockCount; blockIndex++) { if (selectedBlockMask[blockIndex]) { selectedBlockCount++; } } selectedBlockSkipNodeArray = palloc0(columnCount * sizeof(ColumnBlockSkipNode *)); for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { uint32 selectedBlockIndex = 0; bool firstColumn = columnIndex == 0; /* first column's block skip node is always read */ if (!projectedColumnMask[columnIndex] && !firstColumn) { selectedBlockSkipNodeArray[columnIndex] = NULL; continue; } Assert(stripeSkipList->blockSkipNodeArray[columnIndex] != NULL); selectedBlockSkipNodeArray[columnIndex] = palloc0(selectedBlockCount * sizeof(ColumnBlockSkipNode)); for (blockIndex = 0; blockIndex < stripeSkipList->blockCount; blockIndex++) { if (selectedBlockMask[blockIndex]) { selectedBlockSkipNodeArray[columnIndex][selectedBlockIndex] = stripeSkipList->blockSkipNodeArray[columnIndex][blockIndex]; selectedBlockIndex++; } } } SelectedBlockSkipList = palloc0(sizeof(StripeSkipList)); SelectedBlockSkipList->blockSkipNodeArray = selectedBlockSkipNodeArray; SelectedBlockSkipList->blockCount = selectedBlockCount; SelectedBlockSkipList->columnCount = stripeSkipList->columnCount; return SelectedBlockSkipList; } /* * StripeSkipListRowCount counts the number of rows in the given stripeSkipList. * To do this, the function finds the first column, and sums up row counts across * all blocks for that column. */ static uint32 StripeSkipListRowCount(StripeSkipList *stripeSkipList) { uint32 stripeSkipListRowCount = 0; uint32 blockIndex = 0; ColumnBlockSkipNode *firstColumnSkipNodeArray = stripeSkipList->blockSkipNodeArray[0]; for (blockIndex = 0; blockIndex < stripeSkipList->blockCount; blockIndex++) { uint32 blockRowCount = firstColumnSkipNodeArray[blockIndex].rowCount; stripeSkipListRowCount += blockRowCount; } return stripeSkipListRowCount; } /* * ProjectedColumnMask returns a boolean array in which the projected columns * from the projected column list are marked as true. */ static bool * ProjectedColumnMask(uint32 columnCount, List *projectedColumnList) { bool *projectedColumnMask = palloc0(columnCount * sizeof(bool)); ListCell *columnCell = NULL; foreach(columnCell, projectedColumnList) { Var *column = (Var *) lfirst(columnCell); uint32 columnIndex = column->varattno - 1; projectedColumnMask[columnIndex] = true; } return projectedColumnMask; } /* * DeserializeBoolArray reads an array of bits from the given buffer and stores * it in provided bool array. */ static void DeserializeBoolArray(StringInfo boolArrayBuffer, bool *boolArray, uint32 boolArrayLength) { uint32 boolArrayIndex = 0; uint32 maximumBoolCount = boolArrayBuffer->len * 8; if (boolArrayLength > maximumBoolCount) { ereport(ERROR, (errmsg("insufficient data for reading boolean array"))); } for (boolArrayIndex = 0; boolArrayIndex < boolArrayLength; boolArrayIndex++) { uint32 byteIndex = boolArrayIndex / 8; uint32 bitIndex = boolArrayIndex % 8; uint8 bitmask = (1 << bitIndex); uint8 shiftedBit = (boolArrayBuffer->data[byteIndex] & bitmask); if (shiftedBit == 0) { boolArray[boolArrayIndex] = false; } else { boolArray[boolArrayIndex] = true; } } } /* * DeserializeDatumArray reads an array of datums from the given buffer and stores * them in provided datumArray. If a value is marked as false in the exists array, * the function assumes that the datum isn't in the buffer, and simply skips it. */ static void DeserializeDatumArray(StringInfo datumBuffer, bool *existsArray, uint32 datumCount, bool datumTypeByValue, int datumTypeLength, char datumTypeAlign, Datum *datumArray) { uint32 datumIndex = 0; uint32 currentDatumDataOffset = 0; for (datumIndex = 0; datumIndex < datumCount; datumIndex++) { char *currentDatumDataPointer = NULL; if (!existsArray[datumIndex]) { continue; } currentDatumDataPointer = datumBuffer->data + currentDatumDataOffset; datumArray[datumIndex] = fetch_att(currentDatumDataPointer, datumTypeByValue, datumTypeLength); currentDatumDataOffset = att_addlength_datum(currentDatumDataOffset, datumTypeLength, currentDatumDataPointer); currentDatumDataOffset = att_align_nominal(currentDatumDataOffset, datumTypeAlign); if (currentDatumDataOffset > datumBuffer->len) { ereport(ERROR, (errmsg("insufficient data left in datum buffer"))); } } } /* * DeserializeBlockData deserializes requested data block for all columns and * stores in blockDataArray. It uncompresses serialized data if necessary. The * function also deallocates data buffers used for previous block, and compressed * data buffers for the current block which will not be needed again. If a column * data is not present serialized buffer, then default value (or null) is used * to fill value array. */ static void DeserializeBlockData(StripeBuffers *stripeBuffers, uint64 blockIndex, uint32 rowCount, ColumnBlockData **blockDataArray, TupleDesc tupleDescriptor) { int columnIndex = 0; for (columnIndex = 0; columnIndex < stripeBuffers->columnCount; columnIndex++) { ColumnBlockData *blockData = blockDataArray[columnIndex]; Form_pg_attribute attributeForm = TupleDescAttr(tupleDescriptor, columnIndex); ColumnBuffers *columnBuffers = stripeBuffers->columnBuffersArray[columnIndex]; bool columnAdded = false; if ((columnBuffers == NULL) && (blockData != NULL)) { columnAdded = true; } if (columnBuffers != NULL) { ColumnBlockBuffers *blockBuffers = columnBuffers->blockBuffersArray[blockIndex]; StringInfo valueBuffer = NULL; /* free previous block's data buffers */ pfree(blockData->valueBuffer->data); pfree(blockData->valueBuffer); /* decompress and deserialize current block's data */ valueBuffer = DecompressBuffer(blockBuffers->valueBuffer, blockBuffers->valueCompressionType); if (blockBuffers->valueCompressionType != COMPRESSION_NONE) { /* compressed data is not needed anymore */ pfree(blockBuffers->valueBuffer->data); pfree(blockBuffers->valueBuffer); } DeserializeBoolArray(blockBuffers->existsBuffer, blockData->existsArray, rowCount); DeserializeDatumArray(valueBuffer, blockData->existsArray, rowCount, attributeForm->attbyval, attributeForm->attlen, attributeForm->attalign, blockData->valueArray); /* store current block's data buffer to be freed at next block read */ blockData->valueBuffer = valueBuffer; } else if (columnAdded) { /* * This is a column that was added after creation of this stripe. * So we use either the default value or NULL. */ if (attributeForm->atthasdef) { int rowIndex = 0; Datum defaultValue = ColumnDefaultValue(tupleDescriptor->constr, attributeForm); for (rowIndex = 0; rowIndex < rowCount; rowIndex++) { blockData->existsArray[rowIndex] = true; blockData->valueArray[rowIndex] = defaultValue; } } else { memset(blockData->existsArray, false, rowCount); } } } } /* * ColumnDefaultValue returns default value for given column. Only const values * are supported. The function errors on any other default value expressions. */ static Datum ColumnDefaultValue(TupleConstr *tupleConstraints, Form_pg_attribute attributeForm) { Datum defaultValue = 0; Node *defaultValueNode = NULL; int defValIndex = 0; for (defValIndex = 0; defValIndex < tupleConstraints->num_defval; defValIndex++) { AttrDefault defaultValue = tupleConstraints->defval[defValIndex]; if (defaultValue.adnum == attributeForm->attnum) { defaultValueNode = stringToNode(defaultValue.adbin); break; } } Assert(defaultValueNode != NULL); /* try reducing the default value node to a const node */ defaultValueNode = eval_const_expressions(NULL, defaultValueNode); if (IsA(defaultValueNode, Const)) { Const *constNode = (Const *) defaultValueNode; defaultValue = constNode->constvalue; } else { const char *columnName = NameStr(attributeForm->attname); ereport(ERROR, (errmsg("unsupported default value for column \"%s\"", columnName), errhint("Expression is either mutable or " "does not evaluate to constant value"))); } return defaultValue; } /* Returns the size of the given file handle. */ static int64 FILESize(FILE *file) { int64 fileSize = 0; int fseekResult = 0; errno = 0; fseekResult = fseeko(file, 0, SEEK_END); if (fseekResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not seek in file: %m"))); } fileSize = ftello(file); if (fileSize == -1) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not get position in file: %m"))); } return fileSize; } /* Reads the given segment from the given file. */ static StringInfo ReadFromFile(FILE *file, uint64 offset, uint32 size) { int fseekResult = 0; int freadResult = 0; int fileError = 0; StringInfo resultBuffer = makeStringInfo(); enlargeStringInfo(resultBuffer, size); resultBuffer->len = size; if (size == 0) { return resultBuffer; } errno = 0; fseekResult = fseeko(file, offset, SEEK_SET); if (fseekResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not seek in file: %m"))); } freadResult = fread(resultBuffer->data, size, 1, file); if (freadResult != 1) { ereport(ERROR, (errmsg("could not read enough data from file"))); } fileError = ferror(file); if (fileError != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not read file: %m"))); } return resultBuffer; } /* * ResetUncompressedBlockData iterates over deserialized column block data * and sets valueBuffer field to empty buffer. This field is allocated in stripe * memory context and becomes invalid once memory context is reset. */ static void ResetUncompressedBlockData(ColumnBlockData **blockDataArray, uint32 columnCount) { uint32 columnIndex = 0; for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBlockData *blockData = blockDataArray[columnIndex]; if (blockData != NULL) { blockData->valueBuffer = makeStringInfo(); } } } cstore_fdw-1.7.0/cstore_version_compat.h000066400000000000000000000034621362275575300204620ustar00rootroot00000000000000/*------------------------------------------------------------------------- * * cstore_version_compat.h * * Compatibility macros for writing code agnostic to PostgreSQL versions * * Copyright (c) 2018, Citus Data, Inc. * * $Id$ * *------------------------------------------------------------------------- */ #ifndef CSTORE_COMPAT_H #define CSTORE_COMPAT_H #if PG_VERSION_NUM < 100000 /* Accessor for the i'th attribute of tupdesc. */ #define TupleDescAttr(tupdesc, i) ((tupdesc)->attrs[(i)]) #endif #if PG_VERSION_NUM < 110000 #define ALLOCSET_DEFAULT_SIZES ALLOCSET_DEFAULT_MINSIZE, ALLOCSET_DEFAULT_INITSIZE, ALLOCSET_DEFAULT_MAXSIZE #define ACLCHECK_OBJECT_TABLE ACL_KIND_CLASS #else #define ACLCHECK_OBJECT_TABLE OBJECT_TABLE #define ExplainPropertyLong(qlabel, value, es) \ ExplainPropertyInteger(qlabel, NULL, value, es) #endif #define PREVIOUS_UTILITY (PreviousProcessUtilityHook != NULL \ ? PreviousProcessUtilityHook : standard_ProcessUtility) #if PG_VERSION_NUM >= 100000 #define CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, \ destReceiver, completionTag) \ PREVIOUS_UTILITY(plannedStatement, queryString, context, paramListInfo, \ queryEnvironment, destReceiver, completionTag) #else #define CALL_PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, \ destReceiver, completionTag) \ PREVIOUS_UTILITY(parseTree, queryString, context, paramListInfo, destReceiver, \ completionTag) #endif #if PG_VERSION_NUM < 120000 #define TTS_EMPTY(slot) ((slot)->tts_isempty) #define ExecForceStoreHeapTuple(tuple, slot, shouldFree) \ ExecStoreTuple(newTuple, tupleSlot, InvalidBuffer, shouldFree); #define HeapScanDesc TableScanDesc #define table_beginscan heap_beginscan #define table_endscan heap_endscan #endif #endif /* CSTORE_COMPAT_H */ cstore_fdw-1.7.0/cstore_writer.c000066400000000000000000001010061362275575300167320ustar00rootroot00000000000000/*------------------------------------------------------------------------- * * cstore_writer.c * * This file contains function definitions for writing cstore files. This * includes the logic for writing file level metadata, writing row stripes, * and calculating block skip nodes. * * Copyright (c) 2016, Citus Data, Inc. * * $Id$ * *------------------------------------------------------------------------- */ #include "postgres.h" #include "cstore_fdw.h" #include "cstore_metadata_serialization.h" #include "cstore_version_compat.h" #include #include "access/nbtree.h" #include "catalog/pg_collation.h" #include "commands/defrem.h" #if PG_VERSION_NUM >= 120000 #include "optimizer/optimizer.h" #else #include "optimizer/var.h" #endif #include "port.h" #include "storage/fd.h" #include "utils/memutils.h" #include "utils/lsyscache.h" #include "utils/rel.h" static void CStoreWriteFooter(StringInfo footerFileName, TableFooter *tableFooter); static StripeBuffers * CreateEmptyStripeBuffers(uint32 stripeMaxRowCount, uint32 blockRowCount, uint32 columnCount); static StripeSkipList * CreateEmptyStripeSkipList(uint32 stripeMaxRowCount, uint32 blockRowCount, uint32 columnCount); static StripeMetadata FlushStripe(TableWriteState *writeState); static StringInfo * CreateSkipListBufferArray(StripeSkipList *stripeSkipList, TupleDesc tupleDescriptor); static StripeFooter * CreateStripeFooter(StripeSkipList *stripeSkipList, StringInfo *skipListBufferArray); static StringInfo SerializeBoolArray(bool *boolArray, uint32 boolArrayLength); static void SerializeSingleDatum(StringInfo datumBuffer, Datum datum, bool datumTypeByValue, int datumTypeLength, char datumTypeAlign); static void SerializeBlockData(TableWriteState *writeState, uint32 blockIndex, uint32 rowCount); static void UpdateBlockSkipNodeMinMax(ColumnBlockSkipNode *blockSkipNode, Datum columnValue, bool columnTypeByValue, int columnTypeLength, Oid columnCollation, FmgrInfo *comparisonFunction); static Datum DatumCopy(Datum datum, bool datumTypeByValue, int datumTypeLength); static void AppendStripeMetadata(TableFooter *tableFooter, StripeMetadata stripeMetadata); static void WriteToFile(FILE *file, void *data, uint32 dataLength); static void SyncAndCloseFile(FILE *file); static StringInfo CopyStringInfo(StringInfo sourceString); /* * CStoreBeginWrite initializes a cstore data load operation and returns a table * handle. This handle should be used for adding the row values and finishing the * data load operation. If the cstore footer file already exists, we read the * footer and then seek to right after the last stripe where the new stripes * will be added. */ TableWriteState * CStoreBeginWrite(const char *filename, CompressionType compressionType, uint64 stripeMaxRowCount, uint32 blockRowCount, TupleDesc tupleDescriptor) { TableWriteState *writeState = NULL; FILE *tableFile = NULL; StringInfo tableFooterFilename = NULL; TableFooter *tableFooter = NULL; FmgrInfo **comparisonFunctionArray = NULL; MemoryContext stripeWriteContext = NULL; uint64 currentFileOffset = 0; uint32 columnCount = 0; uint32 columnIndex = 0; struct stat statBuffer; int statResult = 0; bool *columnMaskArray = NULL; ColumnBlockData **blockData = NULL; tableFooterFilename = makeStringInfo(); appendStringInfo(tableFooterFilename, "%s%s", filename, CSTORE_FOOTER_FILE_SUFFIX); statResult = stat(tableFooterFilename->data, &statBuffer); if (statResult < 0) { tableFile = AllocateFile(filename, "w"); if (tableFile == NULL) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not open file \"%s\" for writing: %m", filename))); } tableFooter = palloc0(sizeof(TableFooter)); tableFooter->blockRowCount = blockRowCount; tableFooter->stripeMetadataList = NIL; } else { tableFile = AllocateFile(filename, "r+"); if (tableFile == NULL) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not open file \"%s\" for writing: %m", filename))); } tableFooter = CStoreReadFooter(tableFooterFilename); } /* * If stripeMetadataList is not empty, jump to the position right after * the last position. */ if (tableFooter->stripeMetadataList != NIL) { StripeMetadata *lastStripe = NULL; uint64 lastStripeSize = 0; int fseekResult = 0; lastStripe = llast(tableFooter->stripeMetadataList); lastStripeSize += lastStripe->skipListLength; lastStripeSize += lastStripe->dataLength; lastStripeSize += lastStripe->footerLength; currentFileOffset = lastStripe->fileOffset + lastStripeSize; errno = 0; fseekResult = fseeko(tableFile, currentFileOffset, SEEK_SET); if (fseekResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not seek in file \"%s\": %m", filename))); } } /* get comparison function pointers for each of the columns */ columnCount = tupleDescriptor->natts; comparisonFunctionArray = palloc0(columnCount * sizeof(FmgrInfo *)); for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { FmgrInfo *comparisonFunction = NULL; FormData_pg_attribute *attributeForm = TupleDescAttr(tupleDescriptor, columnIndex); if (!attributeForm->attisdropped) { Oid typeId = attributeForm->atttypid; comparisonFunction = GetFunctionInfoOrNull(typeId, BTREE_AM_OID, BTORDER_PROC); } comparisonFunctionArray[columnIndex] = comparisonFunction; } /* * We allocate all stripe specific data in the stripeWriteContext, and * reset this memory context once we have flushed the stripe to the file. * This is to avoid memory leaks. */ stripeWriteContext = AllocSetContextCreate(CurrentMemoryContext, "Stripe Write Memory Context", ALLOCSET_DEFAULT_SIZES); columnMaskArray = palloc(columnCount * sizeof(bool)); memset(columnMaskArray, true, columnCount); blockData = CreateEmptyBlockDataArray(columnCount, columnMaskArray, blockRowCount); writeState = palloc0(sizeof(TableWriteState)); writeState->tableFile = tableFile; writeState->tableFooterFilename = tableFooterFilename; writeState->tableFooter = tableFooter; writeState->compressionType = compressionType; writeState->stripeMaxRowCount = stripeMaxRowCount; writeState->tupleDescriptor = tupleDescriptor; writeState->currentFileOffset = currentFileOffset; writeState->comparisonFunctionArray = comparisonFunctionArray; writeState->stripeBuffers = NULL; writeState->stripeSkipList = NULL; writeState->stripeWriteContext = stripeWriteContext; writeState->blockDataArray = blockData; writeState->compressionBuffer = NULL; return writeState; } /* * CStoreWriteRow adds a row to the cstore file. If the stripe is not initialized, * we create structures to hold stripe data and skip list. Then, we serialize and * append data to serialized value buffer for each of the columns and update * corresponding skip nodes. Then, whole block data is compressed at every * rowBlockCount insertion. Then, if row count exceeds stripeMaxRowCount, we flush * the stripe, and add its metadata to the table footer. */ void CStoreWriteRow(TableWriteState *writeState, Datum *columnValues, bool *columnNulls) { uint32 columnIndex = 0; uint32 blockIndex = 0; uint32 blockRowIndex = 0; StripeBuffers *stripeBuffers = writeState->stripeBuffers; StripeSkipList *stripeSkipList = writeState->stripeSkipList; uint32 columnCount = writeState->tupleDescriptor->natts; TableFooter *tableFooter = writeState->tableFooter; const uint32 blockRowCount = tableFooter->blockRowCount; ColumnBlockData **blockDataArray = writeState->blockDataArray; MemoryContext oldContext = MemoryContextSwitchTo(writeState->stripeWriteContext); if (stripeBuffers == NULL) { stripeBuffers = CreateEmptyStripeBuffers(writeState->stripeMaxRowCount, blockRowCount, columnCount); stripeSkipList = CreateEmptyStripeSkipList(writeState->stripeMaxRowCount, blockRowCount, columnCount); writeState->stripeBuffers = stripeBuffers; writeState->stripeSkipList = stripeSkipList; writeState->compressionBuffer = makeStringInfo(); /* * serializedValueBuffer lives in stripe write memory context so it needs to be * initialized when the stripe is created. */ for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBlockData *blockData = blockDataArray[columnIndex]; blockData->valueBuffer = makeStringInfo(); } } blockIndex = stripeBuffers->rowCount / blockRowCount; blockRowIndex = stripeBuffers->rowCount % blockRowCount; for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBlockData *blockData = blockDataArray[columnIndex]; ColumnBlockSkipNode **blockSkipNodeArray = stripeSkipList->blockSkipNodeArray; ColumnBlockSkipNode *blockSkipNode = &blockSkipNodeArray[columnIndex][blockIndex]; if (columnNulls[columnIndex]) { blockData->existsArray[blockRowIndex] = false; } else { FmgrInfo *comparisonFunction = writeState->comparisonFunctionArray[columnIndex]; Form_pg_attribute attributeForm = TupleDescAttr(writeState->tupleDescriptor, columnIndex); bool columnTypeByValue = attributeForm->attbyval; int columnTypeLength = attributeForm->attlen; Oid columnCollation = attributeForm->attcollation; char columnTypeAlign = attributeForm->attalign; blockData->existsArray[blockRowIndex] = true; SerializeSingleDatum(blockData->valueBuffer, columnValues[columnIndex], columnTypeByValue, columnTypeLength, columnTypeAlign); UpdateBlockSkipNodeMinMax(blockSkipNode, columnValues[columnIndex], columnTypeByValue, columnTypeLength, columnCollation, comparisonFunction); } blockSkipNode->rowCount++; } stripeSkipList->blockCount = blockIndex + 1; /* last row of the block is inserted serialize the block */ if (blockRowIndex == blockRowCount - 1) { SerializeBlockData(writeState, blockIndex, blockRowCount); } stripeBuffers->rowCount++; if (stripeBuffers->rowCount >= writeState->stripeMaxRowCount) { StripeMetadata stripeMetadata = FlushStripe(writeState); MemoryContextReset(writeState->stripeWriteContext); /* set stripe data and skip list to NULL so they are recreated next time */ writeState->stripeBuffers = NULL; writeState->stripeSkipList = NULL; /* * Append stripeMetadata in old context so next MemoryContextReset * doesn't free it. */ MemoryContextSwitchTo(oldContext); AppendStripeMetadata(tableFooter, stripeMetadata); } else { MemoryContextSwitchTo(oldContext); } } /* * CStoreEndWrite finishes a cstore data load operation. If we have an unflushed * stripe, we flush it. Then, we sync and close the cstore data file. Last, we * flush the footer to a temporary file, and atomically rename this temporary * file to the original footer file. */ void CStoreEndWrite(TableWriteState *writeState) { StringInfo tableFooterFilename = NULL; StringInfo tempTableFooterFileName = NULL; int renameResult = 0; int columnCount = writeState->tupleDescriptor->natts; StripeBuffers *stripeBuffers = writeState->stripeBuffers; if (stripeBuffers != NULL) { MemoryContext oldContext = MemoryContextSwitchTo(writeState->stripeWriteContext); StripeMetadata stripeMetadata = FlushStripe(writeState); MemoryContextReset(writeState->stripeWriteContext); MemoryContextSwitchTo(oldContext); AppendStripeMetadata(writeState->tableFooter, stripeMetadata); } SyncAndCloseFile(writeState->tableFile); tableFooterFilename = writeState->tableFooterFilename; tempTableFooterFileName = makeStringInfo(); appendStringInfo(tempTableFooterFileName, "%s%s", tableFooterFilename->data, CSTORE_TEMP_FILE_SUFFIX); CStoreWriteFooter(tempTableFooterFileName, writeState->tableFooter); renameResult = rename(tempTableFooterFileName->data, tableFooterFilename->data); if (renameResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not rename file \"%s\" to \"%s\": %m", tempTableFooterFileName->data, tableFooterFilename->data))); } pfree(tempTableFooterFileName->data); pfree(tempTableFooterFileName); MemoryContextDelete(writeState->stripeWriteContext); list_free_deep(writeState->tableFooter->stripeMetadataList); pfree(writeState->tableFooter); pfree(writeState->tableFooterFilename->data); pfree(writeState->tableFooterFilename); pfree(writeState->comparisonFunctionArray); FreeColumnBlockDataArray(writeState->blockDataArray, columnCount); pfree(writeState); } /* * CStoreWriteFooter writes the given footer to given file. First, the function * serializes and writes the footer to the file. Then, the function serializes * and writes the postscript. Then, the function writes the postscript size as * the last byte of the file. Last, the function syncs and closes the footer file. */ static void CStoreWriteFooter(StringInfo tableFooterFilename, TableFooter *tableFooter) { FILE *tableFooterFile = NULL; StringInfo tableFooterBuffer = NULL; StringInfo postscriptBuffer = NULL; uint8 postscriptSize = 0; tableFooterFile = AllocateFile(tableFooterFilename->data, PG_BINARY_W); if (tableFooterFile == NULL) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not open file \"%s\" for writing: %m", tableFooterFilename->data))); } /* write the footer */ tableFooterBuffer = SerializeTableFooter(tableFooter); WriteToFile(tableFooterFile, tableFooterBuffer->data, tableFooterBuffer->len); /* write the postscript */ postscriptBuffer = SerializePostScript(tableFooterBuffer->len); WriteToFile(tableFooterFile, postscriptBuffer->data, postscriptBuffer->len); /* write the 1-byte postscript size */ Assert(postscriptBuffer->len < CSTORE_POSTSCRIPT_SIZE_MAX); postscriptSize = postscriptBuffer->len; WriteToFile(tableFooterFile, &postscriptSize, CSTORE_POSTSCRIPT_SIZE_LENGTH); SyncAndCloseFile(tableFooterFile); pfree(tableFooterBuffer->data); pfree(tableFooterBuffer); pfree(postscriptBuffer->data); pfree(postscriptBuffer); } /* * CreateEmptyStripeBuffers allocates an empty StripeBuffers structure with the given * column count. */ static StripeBuffers * CreateEmptyStripeBuffers(uint32 stripeMaxRowCount, uint32 blockRowCount, uint32 columnCount) { StripeBuffers *stripeBuffers = NULL; uint32 columnIndex = 0; uint32 maxBlockCount = (stripeMaxRowCount / blockRowCount) + 1; ColumnBuffers **columnBuffersArray = palloc0(columnCount * sizeof(ColumnBuffers *)); for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { uint32 blockIndex = 0; ColumnBlockBuffers **blockBuffersArray = palloc0(maxBlockCount * sizeof(ColumnBlockBuffers *)); for (blockIndex = 0; blockIndex < maxBlockCount; blockIndex++) { blockBuffersArray[blockIndex] = palloc0(sizeof(ColumnBlockBuffers)); blockBuffersArray[blockIndex]->existsBuffer = NULL; blockBuffersArray[blockIndex]->valueBuffer = NULL; blockBuffersArray[blockIndex]->valueCompressionType = COMPRESSION_NONE; } columnBuffersArray[columnIndex] = palloc0(sizeof(ColumnBuffers)); columnBuffersArray[columnIndex]->blockBuffersArray = blockBuffersArray; } stripeBuffers = palloc0(sizeof(StripeBuffers)); stripeBuffers->columnBuffersArray = columnBuffersArray; stripeBuffers->columnCount = columnCount; stripeBuffers->rowCount = 0; return stripeBuffers; } /* * CreateEmptyStripeSkipList allocates an empty StripeSkipList structure with * the given column count. This structure has enough blocks to hold statistics * for stripeMaxRowCount rows. */ static StripeSkipList * CreateEmptyStripeSkipList(uint32 stripeMaxRowCount, uint32 blockRowCount, uint32 columnCount) { StripeSkipList *stripeSkipList = NULL; uint32 columnIndex = 0; uint32 maxBlockCount = (stripeMaxRowCount / blockRowCount) + 1; ColumnBlockSkipNode **blockSkipNodeArray = palloc0(columnCount * sizeof(ColumnBlockSkipNode *)); for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { blockSkipNodeArray[columnIndex] = palloc0(maxBlockCount * sizeof(ColumnBlockSkipNode)); } stripeSkipList = palloc0(sizeof(StripeSkipList)); stripeSkipList->columnCount = columnCount; stripeSkipList->blockCount = 0; stripeSkipList->blockSkipNodeArray = blockSkipNodeArray; return stripeSkipList; } /* * FlushStripe flushes current stripe data into the file. The function first ensures * the last data block for each column is properly serialized and compressed. Then, * the function creates the skip list and footer buffers. Finally, the function * flushes the skip list, data, and footer buffers to the file. */ static StripeMetadata FlushStripe(TableWriteState *writeState) { StripeMetadata stripeMetadata = {0, 0, 0, 0}; uint64 skipListLength = 0; uint64 dataLength = 0; StringInfo *skipListBufferArray = NULL; StripeFooter *stripeFooter = NULL; StringInfo stripeFooterBuffer = NULL; uint32 columnIndex = 0; uint32 blockIndex = 0; TableFooter *tableFooter = writeState->tableFooter; FILE *tableFile = writeState->tableFile; StripeBuffers *stripeBuffers = writeState->stripeBuffers; StripeSkipList *stripeSkipList = writeState->stripeSkipList; ColumnBlockSkipNode **columnSkipNodeArray = stripeSkipList->blockSkipNodeArray; TupleDesc tupleDescriptor = writeState->tupleDescriptor; uint32 columnCount = tupleDescriptor->natts; uint32 blockCount = stripeSkipList->blockCount; uint32 blockRowCount = tableFooter->blockRowCount; uint32 lastBlockIndex = stripeBuffers->rowCount / blockRowCount; uint32 lastBlockRowCount = stripeBuffers->rowCount % blockRowCount; /* * check if the last block needs serialization , the last block was not serialized * if it was not full yet, e.g. (rowCount > 0) */ if (lastBlockRowCount > 0) { SerializeBlockData(writeState, lastBlockIndex, lastBlockRowCount); } /* update buffer sizes and positions in stripe skip list */ for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBlockSkipNode *blockSkipNodeArray = columnSkipNodeArray[columnIndex]; uint64 currentExistsBlockOffset = 0; uint64 currentValueBlockOffset = 0; ColumnBuffers *columnBuffers = stripeBuffers->columnBuffersArray[columnIndex]; for (blockIndex = 0; blockIndex < blockCount; blockIndex++) { ColumnBlockBuffers *blockBuffers = columnBuffers->blockBuffersArray[blockIndex]; uint64 existsBufferSize = blockBuffers->existsBuffer->len; uint64 valueBufferSize = blockBuffers->valueBuffer->len; CompressionType valueCompressionType = blockBuffers->valueCompressionType; ColumnBlockSkipNode *blockSkipNode = &blockSkipNodeArray[blockIndex]; blockSkipNode->existsBlockOffset = currentExistsBlockOffset; blockSkipNode->existsLength = existsBufferSize; blockSkipNode->valueBlockOffset = currentValueBlockOffset; blockSkipNode->valueLength = valueBufferSize; blockSkipNode->valueCompressionType = valueCompressionType; currentExistsBlockOffset += existsBufferSize; currentValueBlockOffset += valueBufferSize; } } /* create skip list and footer buffers */ skipListBufferArray = CreateSkipListBufferArray(stripeSkipList, tupleDescriptor); stripeFooter = CreateStripeFooter(stripeSkipList, skipListBufferArray); stripeFooterBuffer = SerializeStripeFooter(stripeFooter); /* * Each stripe has three sections: * (1) Skip list, which contains statistics for each column block, and can * be used to skip reading row blocks that are refuted by WHERE clause list, * (2) Data section, in which we store data for each column continuously. * We store data for each for each column in blocks. For each block, we * store two buffers: "exists" buffer, and "value" buffer. "exists" buffer * tells which values are not NULL. "value" buffer contains values for * present values. For each column, we first store all "exists" buffers, * and then all "value" buffers. * (3) Stripe footer, which contains the skip list buffer size, exists buffer * size, and value buffer size for each of the columns. * * We start by flushing the skip list buffers. */ for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { StringInfo skipListBuffer = skipListBufferArray[columnIndex]; WriteToFile(tableFile, skipListBuffer->data, skipListBuffer->len); } /* then, we flush the data buffers */ for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBuffers *columnBuffers = stripeBuffers->columnBuffersArray[columnIndex]; uint32 blockIndex = 0; for (blockIndex = 0; blockIndex < stripeSkipList->blockCount; blockIndex++) { ColumnBlockBuffers *blockBuffers = columnBuffers->blockBuffersArray[blockIndex]; StringInfo existsBuffer = blockBuffers->existsBuffer; WriteToFile(tableFile, existsBuffer->data, existsBuffer->len); } for (blockIndex = 0; blockIndex < stripeSkipList->blockCount; blockIndex++) { ColumnBlockBuffers *blockBuffers = columnBuffers->blockBuffersArray[blockIndex]; StringInfo valueBuffer = blockBuffers->valueBuffer; WriteToFile(tableFile, valueBuffer->data, valueBuffer->len); } } /* finally, we flush the footer buffer */ WriteToFile(tableFile, stripeFooterBuffer->data, stripeFooterBuffer->len); /* set stripe metadata */ for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { skipListLength += stripeFooter->skipListSizeArray[columnIndex]; dataLength += stripeFooter->existsSizeArray[columnIndex]; dataLength += stripeFooter->valueSizeArray[columnIndex]; } stripeMetadata.fileOffset = writeState->currentFileOffset; stripeMetadata.skipListLength = skipListLength; stripeMetadata.dataLength = dataLength; stripeMetadata.footerLength = stripeFooterBuffer->len; /* advance current file offset */ writeState->currentFileOffset += skipListLength; writeState->currentFileOffset += dataLength; writeState->currentFileOffset += stripeFooterBuffer->len; return stripeMetadata; } /* * CreateSkipListBufferArray serializes the skip list for each column of the * given stripe and returns the result as an array. */ static StringInfo * CreateSkipListBufferArray(StripeSkipList *stripeSkipList, TupleDesc tupleDescriptor) { StringInfo *skipListBufferArray = NULL; uint32 columnIndex = 0; uint32 columnCount = stripeSkipList->columnCount; skipListBufferArray = palloc0(columnCount * sizeof(StringInfo)); for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { StringInfo skipListBuffer = NULL; ColumnBlockSkipNode *blockSkipNodeArray = stripeSkipList->blockSkipNodeArray[columnIndex]; Form_pg_attribute attributeForm = TupleDescAttr(tupleDescriptor, columnIndex); skipListBuffer = SerializeColumnSkipList(blockSkipNodeArray, stripeSkipList->blockCount, attributeForm->attbyval, attributeForm->attlen); skipListBufferArray[columnIndex] = skipListBuffer; } return skipListBufferArray; } /* Creates and returns the footer for given stripe. */ static StripeFooter * CreateStripeFooter(StripeSkipList *stripeSkipList, StringInfo *skipListBufferArray) { StripeFooter *stripeFooter = NULL; uint32 columnIndex = 0; uint32 columnCount = stripeSkipList->columnCount; uint64 *skipListSizeArray = palloc0(columnCount * sizeof(uint64)); uint64 *existsSizeArray = palloc0(columnCount * sizeof(uint64)); uint64 *valueSizeArray = palloc0(columnCount * sizeof(uint64)); for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBlockSkipNode *blockSkipNodeArray = stripeSkipList->blockSkipNodeArray[columnIndex]; uint32 blockIndex = 0; for (blockIndex = 0; blockIndex < stripeSkipList->blockCount; blockIndex++) { existsSizeArray[columnIndex] += blockSkipNodeArray[blockIndex].existsLength; valueSizeArray[columnIndex] += blockSkipNodeArray[blockIndex].valueLength; } skipListSizeArray[columnIndex] = skipListBufferArray[columnIndex]->len; } stripeFooter = palloc0(sizeof(StripeFooter)); stripeFooter->columnCount = columnCount; stripeFooter->skipListSizeArray = skipListSizeArray; stripeFooter->existsSizeArray = existsSizeArray; stripeFooter->valueSizeArray = valueSizeArray; return stripeFooter; } /* * SerializeBoolArray serializes the given boolean array and returns the result * as a StringInfo. This function packs every 8 boolean values into one byte. */ static StringInfo SerializeBoolArray(bool *boolArray, uint32 boolArrayLength) { StringInfo boolArrayBuffer = NULL; uint32 boolArrayIndex = 0; uint32 byteCount = (boolArrayLength + 7) / 8; boolArrayBuffer = makeStringInfo(); enlargeStringInfo(boolArrayBuffer, byteCount); boolArrayBuffer->len = byteCount; memset(boolArrayBuffer->data, 0, byteCount); for (boolArrayIndex = 0; boolArrayIndex < boolArrayLength; boolArrayIndex++) { if (boolArray[boolArrayIndex]) { uint32 byteIndex = boolArrayIndex / 8; uint32 bitIndex = boolArrayIndex % 8; boolArrayBuffer->data[byteIndex] |= (1 << bitIndex); } } return boolArrayBuffer; } /* * SerializeSingleDatum serializes the given datum value and appends it to the * provided string info buffer. */ static void SerializeSingleDatum(StringInfo datumBuffer, Datum datum, bool datumTypeByValue, int datumTypeLength, char datumTypeAlign) { uint32 datumLength = att_addlength_datum(0, datumTypeLength, datum); uint32 datumLengthAligned = att_align_nominal(datumLength, datumTypeAlign); char *currentDatumDataPointer = NULL; enlargeStringInfo(datumBuffer, datumLengthAligned); currentDatumDataPointer = datumBuffer->data + datumBuffer->len; memset(currentDatumDataPointer, 0, datumLengthAligned); if (datumTypeLength > 0) { if (datumTypeByValue) { store_att_byval(currentDatumDataPointer, datum, datumTypeLength); } else { memcpy(currentDatumDataPointer, DatumGetPointer(datum), datumTypeLength); } } else { Assert(!datumTypeByValue); memcpy(currentDatumDataPointer, DatumGetPointer(datum), datumLength); } datumBuffer->len += datumLengthAligned; } /* * SerializeBlockData serializes and compresses block data at given block index with given * compression type for every column. */ static void SerializeBlockData(TableWriteState *writeState, uint32 blockIndex, uint32 rowCount) { uint32 columnIndex = 0; StripeBuffers *stripeBuffers = writeState->stripeBuffers; ColumnBlockData **blockDataArray = writeState->blockDataArray; CompressionType requestedCompressionType = writeState->compressionType; const uint32 columnCount = stripeBuffers->columnCount; StringInfo compressionBuffer = writeState->compressionBuffer; /* serialize exist values, data values are already serialized */ for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBuffers *columnBuffers = stripeBuffers->columnBuffersArray[columnIndex]; ColumnBlockBuffers *blockBuffers = columnBuffers->blockBuffersArray[blockIndex]; ColumnBlockData *blockData = blockDataArray[columnIndex]; blockBuffers->existsBuffer = SerializeBoolArray(blockData->existsArray, rowCount); } /* * check and compress value buffers, if a value buffer is not compressable * then keep it as uncompressed, store compression information. */ for (columnIndex = 0; columnIndex < columnCount; columnIndex++) { ColumnBuffers *columnBuffers = stripeBuffers->columnBuffersArray[columnIndex]; ColumnBlockBuffers *blockBuffers = columnBuffers->blockBuffersArray[blockIndex]; ColumnBlockData *blockData = blockDataArray[columnIndex]; StringInfo serializedValueBuffer = NULL; CompressionType actualCompressionType = COMPRESSION_NONE; bool compressed = false; serializedValueBuffer = blockData->valueBuffer; /* the only other supported compression type is pg_lz for now */ Assert(requestedCompressionType == COMPRESSION_NONE || requestedCompressionType == COMPRESSION_PG_LZ); /* * if serializedValueBuffer is be compressed, update serializedValueBuffer * with compressed data and store compression type. */ compressed = CompressBuffer(serializedValueBuffer, compressionBuffer, requestedCompressionType); if (compressed) { serializedValueBuffer = compressionBuffer; actualCompressionType = COMPRESSION_PG_LZ; } /* store (compressed) value buffer */ blockBuffers->valueCompressionType = actualCompressionType; blockBuffers->valueBuffer = CopyStringInfo(serializedValueBuffer); /* valueBuffer needs to be reset for next block's data */ resetStringInfo(blockData->valueBuffer); } } /* * UpdateBlockSkipNodeMinMax takes the given column value, and checks if this * value falls outside the range of minimum/maximum values of the given column * block skip node. If it does, the function updates the column block skip node * accordingly. */ static void UpdateBlockSkipNodeMinMax(ColumnBlockSkipNode *blockSkipNode, Datum columnValue, bool columnTypeByValue, int columnTypeLength, Oid columnCollation, FmgrInfo *comparisonFunction) { bool hasMinMax = blockSkipNode->hasMinMax; Datum previousMinimum = blockSkipNode->minimumValue; Datum previousMaximum = blockSkipNode->maximumValue; Datum currentMinimum = 0; Datum currentMaximum = 0; /* if type doesn't have a comparison function, skip min/max values */ if (comparisonFunction == NULL) { return; } if (!hasMinMax) { currentMinimum = DatumCopy(columnValue, columnTypeByValue, columnTypeLength); currentMaximum = DatumCopy(columnValue, columnTypeByValue, columnTypeLength); } else { Datum minimumComparisonDatum = FunctionCall2Coll(comparisonFunction, columnCollation, columnValue, previousMinimum); Datum maximumComparisonDatum = FunctionCall2Coll(comparisonFunction, columnCollation, columnValue, previousMaximum); int minimumComparison = DatumGetInt32(minimumComparisonDatum); int maximumComparison = DatumGetInt32(maximumComparisonDatum); if (minimumComparison < 0) { currentMinimum = DatumCopy(columnValue, columnTypeByValue, columnTypeLength); } else { currentMinimum = previousMinimum; } if (maximumComparison > 0) { currentMaximum = DatumCopy(columnValue, columnTypeByValue, columnTypeLength); } else { currentMaximum = previousMaximum; } } blockSkipNode->hasMinMax = true; blockSkipNode->minimumValue = currentMinimum; blockSkipNode->maximumValue = currentMaximum; } /* Creates a copy of the given datum. */ static Datum DatumCopy(Datum datum, bool datumTypeByValue, int datumTypeLength) { Datum datumCopy = 0; if (datumTypeByValue) { datumCopy = datum; } else { uint32 datumLength = att_addlength_datum(0, datumTypeLength, datum); char *datumData = palloc0(datumLength); memcpy(datumData, DatumGetPointer(datum), datumLength); datumCopy = PointerGetDatum(datumData); } return datumCopy; } /* * AppendStripeMetadata adds a copy of given stripeMetadata to the given * table footer's stripeMetadataList. */ static void AppendStripeMetadata(TableFooter *tableFooter, StripeMetadata stripeMetadata) { StripeMetadata *stripeMetadataCopy = palloc0(sizeof(StripeMetadata)); memcpy(stripeMetadataCopy, &stripeMetadata, sizeof(StripeMetadata)); tableFooter->stripeMetadataList = lappend(tableFooter->stripeMetadataList, stripeMetadataCopy); } /* Writes the given data to the given file pointer and checks for errors. */ static void WriteToFile(FILE *file, void *data, uint32 dataLength) { int writeResult = 0; int errorResult = 0; if (dataLength == 0) { return; } errno = 0; writeResult = fwrite(data, dataLength, 1, file); if (writeResult != 1) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not write file: %m"))); } errorResult = ferror(file); if (errorResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("error in file: %m"))); } } /* Flushes, syncs, and closes the given file pointer and checks for errors. */ static void SyncAndCloseFile(FILE *file) { int flushResult = 0; int syncResult = 0; int errorResult = 0; int freeResult = 0; errno = 0; flushResult = fflush(file); if (flushResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not flush file: %m"))); } syncResult = pg_fsync(fileno(file)); if (syncResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not sync file: %m"))); } errorResult = ferror(file); if (errorResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("error in file: %m"))); } freeResult = FreeFile(file); if (freeResult != 0) { ereport(ERROR, (errcode_for_file_access(), errmsg("could not close file: %m"))); } } /* * CopyStringInfo creates a deep copy of given source string allocating only needed * amount of memory. */ static StringInfo CopyStringInfo(StringInfo sourceString) { StringInfo targetString = palloc0(sizeof(StringInfoData)); if (sourceString->len > 0) { targetString->data = palloc0(sourceString->len); targetString->len = sourceString->len; targetString->maxlen = sourceString->len; memcpy(targetString->data, sourceString->data, sourceString->len); } return targetString; } cstore_fdw-1.7.0/data/000077500000000000000000000000001362275575300146065ustar00rootroot00000000000000cstore_fdw-1.7.0/data/array_types.csv000066400000000000000000000001701362275575300176630ustar00rootroot00000000000000"{1,2,3}","{1,2,3}","{a,b,c}" {},{},{} "{-2147483648,2147483647}","{-9223372036854775808,9223372036854775807}","{""""}" cstore_fdw-1.7.0/data/block_filtering.csv000066400000000000000000001373761362275575300205010ustar00rootroot000000000000001 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 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9890 9891 9892 9893 9894 9895 9896 9897 9898 9899 9900 9901 9902 9903 9904 9905 9906 9907 9908 9909 9910 9911 9912 9913 9914 9915 9916 9917 9918 9919 9920 9921 9922 9923 9924 9925 9926 9927 9928 9929 9930 9931 9932 9933 9934 9935 9936 9937 9938 9939 9940 9941 9942 9943 9944 9945 9946 9947 9948 9949 9950 9951 9952 9953 9954 9955 9956 9957 9958 9959 9960 9961 9962 9963 9964 9965 9966 9967 9968 9969 9970 9971 9972 9973 9974 9975 9976 9977 9978 9979 9980 9981 9982 9983 9984 9985 9986 9987 9988 9989 9990 9991 9992 9993 9994 9995 9996 9997 9998 9999 10000 cstore_fdw-1.7.0/data/contestants.1.csv000066400000000000000000000002421362275575300200250ustar00rootroot00000000000000a,1990-01-10,2090,97.1,XA ,{a} b,1990-11-01,2203,98.1,XA ,"{a,b}" c,1988-11-01,2907,99.4,XB ,"{w,y}" d,1985-05-05,2314,98.3,XB ,{} e,1995-05-05,2236,98.2,XC ,{a} cstore_fdw-1.7.0/data/contestants.2.csv000066400000000000000000000001551362275575300200310ustar00rootroot00000000000000f,1983-04-02,3090,99.6,XD ,"{a,b,c,y}" g,1991-12-13,1803,85.1,XD ,"{a,c}" h,1987-10-26,2112,95.4,XD ,"{w,a}" cstore_fdw-1.7.0/data/datetime_types.csv000066400000000000000000000002011362275575300203340ustar00rootroot000000000000002000-01-02 04:05:06,1999-01-08 14:05:06+02,2000-01-02,04:05:06,04:00:00 1970-01-01 00:00:00,infinity,-infinity,00:00:00,00:00:00 cstore_fdw-1.7.0/data/enum_and_composite_types.csv000066400000000000000000000000241362275575300224130ustar00rootroot00000000000000a,"(2,b)" b,"(3,c)" cstore_fdw-1.7.0/data/null_values.csv000066400000000000000000000000211362275575300176450ustar00rootroot00000000000000,{NULL},"(,)" ,, cstore_fdw-1.7.0/data/other_types.csv000066400000000000000000000002451362275575300176710ustar00rootroot00000000000000f,\xdeadbeef,$1.00,192.168.1.2,10101,a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11,"{""key"": ""value""}" t,\xcdb0,$1.50,127.0.0.1,"",a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11,[] cstore_fdw-1.7.0/data/range_types.csv000066400000000000000000000001451362275575300176430ustar00rootroot00000000000000"[1,3)","[1,3)","[1,3)","[""2000-01-02 00:30:00"",""2010-02-03 12:30:00"")" empty,"[1,)","(,)",empty cstore_fdw-1.7.0/expected/000077500000000000000000000000001362275575300154765ustar00rootroot00000000000000cstore_fdw-1.7.0/expected/alter.out000066400000000000000000000107561362275575300173470ustar00rootroot00000000000000-- -- Testing ALTER TABLE on cstore_fdw tables. -- CREATE FOREIGN TABLE test_alter_table (a int, b int, c int) SERVER cstore_server; WITH sample_data AS (VALUES (1, 2, 3), (4, 5, 6), (7, 8, 9) ) INSERT INTO test_alter_table SELECT * FROM sample_data; -- drop a column ALTER FOREIGN TABLE test_alter_table DROP COLUMN a; -- test analyze ANALYZE test_alter_table; -- verify select queries run as expected SELECT * FROM test_alter_table; b | c ---+--- 2 | 3 5 | 6 8 | 9 (3 rows) SELECT a FROM test_alter_table; ERROR: column "a" does not exist LINE 1: SELECT a FROM test_alter_table; ^ SELECT b FROM test_alter_table; b --- 2 5 8 (3 rows) -- verify insert runs as expected INSERT INTO test_alter_table (SELECT 3, 5, 8); ERROR: INSERT has more expressions than target columns LINE 1: INSERT INTO test_alter_table (SELECT 3, 5, 8); ^ INSERT INTO test_alter_table (SELECT 5, 8); -- add a column with no defaults ALTER FOREIGN TABLE test_alter_table ADD COLUMN d int; SELECT * FROM test_alter_table; b | c | d ---+---+--- 2 | 3 | 5 | 6 | 8 | 9 | 5 | 8 | (4 rows) INSERT INTO test_alter_table (SELECT 3, 5, 8); SELECT * FROM test_alter_table; b | c | d ---+---+--- 2 | 3 | 5 | 6 | 8 | 9 | 5 | 8 | 3 | 5 | 8 (5 rows) -- add a fixed-length column with default value ALTER FOREIGN TABLE test_alter_table ADD COLUMN e int default 3; SELECT * from test_alter_table; b | c | d | e ---+---+---+--- 2 | 3 | | 3 5 | 6 | | 3 8 | 9 | | 3 5 | 8 | | 3 3 | 5 | 8 | 3 (5 rows) INSERT INTO test_alter_table (SELECT 1, 2, 4, 8); SELECT * from test_alter_table; b | c | d | e ---+---+---+--- 2 | 3 | | 3 5 | 6 | | 3 8 | 9 | | 3 5 | 8 | | 3 3 | 5 | 8 | 3 1 | 2 | 4 | 8 (6 rows) -- add a variable-length column with default value ALTER FOREIGN TABLE test_alter_table ADD COLUMN f text DEFAULT 'TEXT ME'; SELECT * from test_alter_table; b | c | d | e | f ---+---+---+---+--------- 2 | 3 | | 3 | TEXT ME 5 | 6 | | 3 | TEXT ME 8 | 9 | | 3 | TEXT ME 5 | 8 | | 3 | TEXT ME 3 | 5 | 8 | 3 | TEXT ME 1 | 2 | 4 | 8 | TEXT ME (6 rows) INSERT INTO test_alter_table (SELECT 1, 2, 4, 8, 'ABCDEF'); SELECT * from test_alter_table; b | c | d | e | f ---+---+---+---+--------- 2 | 3 | | 3 | TEXT ME 5 | 6 | | 3 | TEXT ME 8 | 9 | | 3 | TEXT ME 5 | 8 | | 3 | TEXT ME 3 | 5 | 8 | 3 | TEXT ME 1 | 2 | 4 | 8 | TEXT ME 1 | 2 | 4 | 8 | ABCDEF (7 rows) -- drop couple of columns ALTER FOREIGN TABLE test_alter_table DROP COLUMN c; ALTER FOREIGN TABLE test_alter_table DROP COLUMN e; ANALYZE test_alter_table; SELECT * from test_alter_table; b | d | f ---+---+--------- 2 | | TEXT ME 5 | | TEXT ME 8 | | TEXT ME 5 | | TEXT ME 3 | 8 | TEXT ME 1 | 4 | TEXT ME 1 | 4 | ABCDEF (7 rows) SELECT count(*) from test_alter_table; count ------- 7 (1 row) SELECT count(t.*) from test_alter_table t; count ------- 7 (1 row) -- unsupported default values ALTER FOREIGN TABLE test_alter_table ADD COLUMN g boolean DEFAULT isfinite(current_date); ALTER FOREIGN TABLE test_alter_table ADD COLUMN h DATE DEFAULT current_date; SELECT * FROM test_alter_table; ERROR: unsupported default value for column "g" HINT: Expression is either mutable or does not evaluate to constant value ALTER FOREIGN TABLE test_alter_table ALTER COLUMN g DROP DEFAULT; SELECT * FROM test_alter_table; ERROR: unsupported default value for column "h" HINT: Expression is either mutable or does not evaluate to constant value ALTER FOREIGN TABLE test_alter_table ALTER COLUMN h DROP DEFAULT; ANALYZE test_alter_table; SELECT * FROM test_alter_table; b | d | f | g | h ---+---+---------+---+--- 2 | | TEXT ME | | 5 | | TEXT ME | | 8 | | TEXT ME | | 5 | | TEXT ME | | 3 | 8 | TEXT ME | | 1 | 4 | TEXT ME | | 1 | 4 | ABCDEF | | (7 rows) -- unsupported type change ALTER FOREIGN TABLE test_alter_table ADD COLUMN i int; ALTER FOREIGN TABLE test_alter_table ADD COLUMN j float; ALTER FOREIGN TABLE test_alter_table ADD COLUMN k text; -- this is valid type change ALTER FOREIGN TABLE test_alter_table ALTER COLUMN i TYPE float; -- this is not valid ALTER FOREIGN TABLE test_alter_table ALTER COLUMN j TYPE int; ERROR: Column j cannot be cast automatically to type pg_catalog.int4 -- text / varchar conversion is valid both ways ALTER FOREIGN TABLE test_alter_table ALTER COLUMN k TYPE varchar(20); ALTER FOREIGN TABLE test_alter_table ALTER COLUMN k TYPE text; DROP FOREIGN TABLE test_alter_table; cstore_fdw-1.7.0/expected/analyze.out000066400000000000000000000005511362275575300176730ustar00rootroot00000000000000-- -- Test the ANALYZE command for cstore_fdw tables. -- -- ANALYZE uncompressed table ANALYZE contestant; SELECT count(*) FROM pg_stats WHERE tablename='contestant'; count ------- 6 (1 row) -- ANALYZE compressed table ANALYZE contestant_compressed; SELECT count(*) FROM pg_stats WHERE tablename='contestant_compressed'; count ------- 6 (1 row) cstore_fdw-1.7.0/expected/drop.out000066400000000000000000000060471362275575300172020ustar00rootroot00000000000000-- -- Tests the different DROP commands for cstore_fdw tables. -- -- DROP FOREIGN TABL -- DROP SCHEMA -- DROP EXTENSION -- DROP DATABASE -- -- Note that travis does not create -- cstore_fdw extension in default database (postgres). This has caused -- different behavior between travis tests and local tests. Thus -- 'postgres' directory is excluded from comparison to have the same result. -- store postgres database oid SELECT oid postgres_oid FROM pg_database WHERE datname = 'postgres' \gset -- Check that files for the automatically managed table exist in the -- cstore_fdw/{databaseoid} directory. SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; count ------- 2 (1 row) -- DROP cstore_fdw tables DROP FOREIGN TABLE contestant; DROP FOREIGN TABLE contestant_compressed; -- Create a cstore_fdw table under a schema and drop it. CREATE SCHEMA test_schema; CREATE FOREIGN TABLE test_schema.test_table(data int) SERVER cstore_server; DROP SCHEMA test_schema CASCADE; NOTICE: drop cascades to foreign table test_schema.test_table -- Check that the files have been deleted and the directory is empty after the -- DROP table command. SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; count ------- 0 (1 row) SELECT current_database() datname \gset CREATE DATABASE db_to_drop; \c db_to_drop CREATE EXTENSION cstore_fdw; CREATE SERVER cstore_server FOREIGN DATA WRAPPER cstore_fdw; SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() \gset CREATE FOREIGN TABLE test_table(data int) SERVER cstore_server; -- should see 2 files, data and footer file for single table SELECT count(*) FROM pg_ls_dir('cstore_fdw/' || :databaseoid); count ------- 2 (1 row) -- should see 2 directories 1 for each database, excluding postgres database SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text; count ------- 2 (1 row) DROP EXTENSION cstore_fdw CASCADE; NOTICE: drop cascades to 2 other objects DETAIL: drop cascades to server cstore_server drop cascades to foreign table test_table -- should only see 1 directory here SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text; count ------- 1 (1 row) -- test database drop CREATE EXTENSION cstore_fdw; CREATE SERVER cstore_server FOREIGN DATA WRAPPER cstore_fdw; SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() \gset CREATE FOREIGN TABLE test_table(data int) SERVER cstore_server; -- should see 2 directories 1 for each database SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text; count ------- 2 (1 row) \c :datname DROP DATABASE db_to_drop; -- should only see 1 directory for the default database SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text; count ------- 1 (1 row) cstore_fdw-1.7.0/expected/functions.out000066400000000000000000000010511362275575300202340ustar00rootroot00000000000000-- -- Test utility functions for cstore_fdw tables. -- CREATE FOREIGN TABLE empty_table (a int) SERVER cstore_server; CREATE FOREIGN TABLE table_with_data (a int) SERVER cstore_server; CREATE TABLE non_cstore_table (a int); COPY table_with_data FROM STDIN; SELECT cstore_table_size('empty_table') < cstore_table_size('table_with_data'); ?column? ---------- t (1 row) SELECT cstore_table_size('non_cstore_table'); ERROR: relation is not a cstore table DROP FOREIGN TABLE empty_table; DROP FOREIGN TABLE table_with_data; DROP TABLE non_cstore_table; cstore_fdw-1.7.0/expected/insert.out000066400000000000000000000041751362275575300175420ustar00rootroot00000000000000-- -- Testing insert on cstore_fdw tables. -- CREATE FOREIGN TABLE test_insert_command (a int) SERVER cstore_server; -- test single row inserts fail select count(*) from test_insert_command; count ------- 0 (1 row) insert into test_insert_command values(1); ERROR: operation is not supported select count(*) from test_insert_command; count ------- 0 (1 row) insert into test_insert_command default values; ERROR: operation is not supported select count(*) from test_insert_command; count ------- 0 (1 row) -- test inserting from another table succeed CREATE TABLE test_insert_command_data (a int); select count(*) from test_insert_command_data; count ------- 0 (1 row) insert into test_insert_command_data values(1); select count(*) from test_insert_command_data; count ------- 1 (1 row) insert into test_insert_command select * from test_insert_command_data; select count(*) from test_insert_command; count ------- 1 (1 row) drop table test_insert_command_data; drop foreign table test_insert_command; -- test long attribute value insertion -- create sufficiently long text so that data is stored in toast CREATE TABLE test_long_text AS SELECT a as int_val, string_agg(random()::text, '') as text_val FROM generate_series(1, 10) a, generate_series(1, 1000) b GROUP BY a ORDER BY a; -- store hash values of text for later comparison CREATE TABLE test_long_text_hash AS SELECT int_val, md5(text_val) AS hash FROM test_long_text; CREATE FOREIGN TABLE test_cstore_long_text(int_val int, text_val text) SERVER cstore_server; -- store long text in cstore table INSERT INTO test_cstore_long_text SELECT * FROM test_long_text; -- drop source table to remove original text from toast DROP TABLE test_long_text; -- check if text data is still available in cstore table -- by comparing previously stored hash. SELECT a.int_val FROM test_long_text_hash a, test_cstore_long_text c WHERE a.int_val = c.int_val AND a.hash = md5(c.text_val); int_val --------- 1 2 3 4 5 6 7 8 9 10 (10 rows) DROP TABLE test_long_text_hash; DROP FOREIGN TABLE test_cstore_long_text; cstore_fdw-1.7.0/expected/query.out000066400000000000000000000073301362275575300173770ustar00rootroot00000000000000-- -- Test querying cstore_fdw tables. -- -- Settings to make the result deterministic SET datestyle = "ISO, YMD"; -- Query uncompressed data SELECT count(*) FROM contestant; count ------- 8 (1 row) SELECT avg(rating), stddev_samp(rating) FROM contestant; avg | stddev_samp -----------------------+------------------ 2344.3750000000000000 | 433.746119785032 (1 row) SELECT country, avg(rating) FROM contestant WHERE rating > 2200 GROUP BY country ORDER BY country; country | avg ---------+----------------------- XA | 2203.0000000000000000 XB | 2610.5000000000000000 XC | 2236.0000000000000000 XD | 3090.0000000000000000 (4 rows) SELECT * FROM contestant ORDER BY handle; handle | birthdate | rating | percentile | country | achievements --------+------------+--------+------------+---------+-------------- a | 1990-01-10 | 2090 | 97.1 | XA | {a} b | 1990-11-01 | 2203 | 98.1 | XA | {a,b} c | 1988-11-01 | 2907 | 99.4 | XB | {w,y} d | 1985-05-05 | 2314 | 98.3 | XB | {} e | 1995-05-05 | 2236 | 98.2 | XC | {a} f | 1983-04-02 | 3090 | 99.6 | XD | {a,b,c,y} g | 1991-12-13 | 1803 | 85.1 | XD | {a,c} h | 1987-10-26 | 2112 | 95.4 | XD | {w,a} (8 rows) -- Query compressed data SELECT count(*) FROM contestant_compressed; count ------- 8 (1 row) SELECT avg(rating), stddev_samp(rating) FROM contestant_compressed; avg | stddev_samp -----------------------+------------------ 2344.3750000000000000 | 433.746119785032 (1 row) SELECT country, avg(rating) FROM contestant_compressed WHERE rating > 2200 GROUP BY country ORDER BY country; country | avg ---------+----------------------- XA | 2203.0000000000000000 XB | 2610.5000000000000000 XC | 2236.0000000000000000 XD | 3090.0000000000000000 (4 rows) SELECT * FROM contestant_compressed ORDER BY handle; handle | birthdate | rating | percentile | country | achievements --------+------------+--------+------------+---------+-------------- a | 1990-01-10 | 2090 | 97.1 | XA | {a} b | 1990-11-01 | 2203 | 98.1 | XA | {a,b} c | 1988-11-01 | 2907 | 99.4 | XB | {w,y} d | 1985-05-05 | 2314 | 98.3 | XB | {} e | 1995-05-05 | 2236 | 98.2 | XC | {a} f | 1983-04-02 | 3090 | 99.6 | XD | {a,b,c,y} g | 1991-12-13 | 1803 | 85.1 | XD | {a,c} h | 1987-10-26 | 2112 | 95.4 | XD | {w,a} (8 rows) -- Verify that we handle whole-row references correctly SELECT to_json(v) FROM contestant v ORDER BY rating LIMIT 1; to_json ------------------------------------------------------------------------------------------------------------------ {"handle":"g","birthdate":"1991-12-13","rating":1803,"percentile":85.1,"country":"XD ","achievements":["a","c"]} (1 row) -- Test variables used in expressions CREATE FOREIGN TABLE union_first (a int, b int) SERVER cstore_server; CREATE FOREIGN TABLE union_second (a int, b int) SERVER cstore_server; INSERT INTO union_first SELECT a, a FROM generate_series(1, 5) a; INSERT INTO union_second SELECT a, a FROM generate_series(11, 15) a; (SELECT a*1, b FROM union_first) union all (SELECT a*1, b FROM union_second); ?column? | b ----------+---- 1 | 1 2 | 2 3 | 3 4 | 4 5 | 5 11 | 11 12 | 12 13 | 13 14 | 14 15 | 15 (10 rows) DROP FOREIGN TABLE union_first, union_second; cstore_fdw-1.7.0/expected/truncate.out000066400000000000000000000142401362275575300200550ustar00rootroot00000000000000-- -- Test the TRUNCATE TABLE command for cstore_fdw tables. -- -- print whether we're using version > 10 to make version-specific tests clear SHOW server_version \gset SELECT substring(:'server_version', '\d+')::int > 10 AS version_above_ten; version_above_ten ------------------- t (1 row) -- Check that files for the automatically managed table exist in the -- cstore_fdw/{databaseoid} directory. SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; count ------- 0 (1 row) -- CREATE a cstore_fdw table, fill with some data -- CREATE FOREIGN TABLE cstore_truncate_test (a int, b int) SERVER cstore_server; CREATE FOREIGN TABLE cstore_truncate_test_second (a int, b int) SERVER cstore_server; CREATE FOREIGN TABLE cstore_truncate_test_compressed (a int, b int) SERVER cstore_server OPTIONS (compression 'pglz'); CREATE TABLE cstore_truncate_test_regular (a int, b int); INSERT INTO cstore_truncate_test select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_compressed select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_compressed select a, a from generate_series(1, 10) a; -- query rows SELECT * FROM cstore_truncate_test; a | b ----+---- 1 | 1 2 | 2 3 | 3 4 | 4 5 | 5 6 | 6 7 | 7 8 | 8 9 | 9 10 | 10 (10 rows) TRUNCATE TABLE cstore_truncate_test; SELECT * FROM cstore_truncate_test; a | b ---+--- (0 rows) SELECT COUNT(*) from cstore_truncate_test; count ------- 0 (1 row) SELECT count(*) FROM cstore_truncate_test_compressed; count ------- 20 (1 row) TRUNCATE TABLE cstore_truncate_test_compressed; SELECT count(*) FROM cstore_truncate_test_compressed; count ------- 0 (1 row) SELECT cstore_table_size('cstore_truncate_test_compressed'); cstore_table_size ------------------- 26 (1 row) -- make sure data files still present SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; count ------- 6 (1 row) INSERT INTO cstore_truncate_test select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_regular select a, a from generate_series(10, 20) a; INSERT INTO cstore_truncate_test_second select a, a from generate_series(20, 30) a; SELECT * from cstore_truncate_test; a | b ----+---- 1 | 1 2 | 2 3 | 3 4 | 4 5 | 5 6 | 6 7 | 7 8 | 8 9 | 9 10 | 10 (10 rows) SELECT * from cstore_truncate_test_second; a | b ----+---- 20 | 20 21 | 21 22 | 22 23 | 23 24 | 24 25 | 25 26 | 26 27 | 27 28 | 28 29 | 29 30 | 30 (11 rows) SELECT * from cstore_truncate_test_regular; a | b ----+---- 10 | 10 11 | 11 12 | 12 13 | 13 14 | 14 15 | 15 16 | 16 17 | 17 18 | 18 19 | 19 20 | 20 (11 rows) -- make sure multi truncate works -- notice that the same table might be repeated TRUNCATE TABLE cstore_truncate_test, cstore_truncate_test_regular, cstore_truncate_test_second, cstore_truncate_test; SELECT * from cstore_truncate_test; a | b ---+--- (0 rows) SELECT * from cstore_truncate_test_second; a | b ---+--- (0 rows) SELECT * from cstore_truncate_test_regular; a | b ---+--- (0 rows) -- test if truncate on empty table works TRUNCATE TABLE cstore_truncate_test; SELECT * from cstore_truncate_test; a | b ---+--- (0 rows) -- test if a cached truncate from a pl/pgsql function works CREATE FUNCTION cstore_truncate_test_regular_func() RETURNS void AS $$ BEGIN INSERT INTO cstore_truncate_test_regular select a, a from generate_series(1, 10) a; TRUNCATE TABLE cstore_truncate_test_regular; END;$$ LANGUAGE plpgsql; SELECT cstore_truncate_test_regular_func(); cstore_truncate_test_regular_func ----------------------------------- (1 row) -- the cached plans are used stating from the second call SELECT cstore_truncate_test_regular_func(); cstore_truncate_test_regular_func ----------------------------------- (1 row) DROP FUNCTION cstore_truncate_test_regular_func(); DROP FOREIGN TABLE cstore_truncate_test, cstore_truncate_test_second; DROP TABLE cstore_truncate_test_regular; DROP FOREIGN TABLE cstore_truncate_test_compressed; -- test truncate with schema CREATE SCHEMA truncate_schema; CREATE FOREIGN TABLE truncate_schema.truncate_tbl (id int) SERVER cstore_server OPTIONS(compression 'pglz'); INSERT INTO truncate_schema.truncate_tbl SELECT generate_series(1, 100); SELECT COUNT(*) FROM truncate_schema.truncate_tbl; count ------- 100 (1 row) TRUNCATE TABLE truncate_schema.truncate_tbl; SELECT COUNT(*) FROM truncate_schema.truncate_tbl; count ------- 0 (1 row) INSERT INTO truncate_schema.truncate_tbl SELECT generate_series(1, 100); -- create a user that can not truncate CREATE USER truncate_user; GRANT USAGE ON SCHEMA truncate_schema TO truncate_user; GRANT SELECT ON TABLE truncate_schema.truncate_tbl TO truncate_user; REVOKE TRUNCATE ON TABLE truncate_schema.truncate_tbl FROM truncate_user; SELECT current_user \gset \c - truncate_user -- verify truncate command fails and check number of rows SELECT count(*) FROM truncate_schema.truncate_tbl; count ------- 100 (1 row) TRUNCATE TABLE truncate_schema.truncate_tbl; ERROR: permission denied for table truncate_tbl SELECT count(*) FROM truncate_schema.truncate_tbl; count ------- 100 (1 row) -- switch to super user, grant truncate to truncate_user \c - :current_user GRANT TRUNCATE ON TABLE truncate_schema.truncate_tbl TO truncate_user; -- verify truncate_user can truncate now \c - truncate_user SELECT count(*) FROM truncate_schema.truncate_tbl; count ------- 100 (1 row) TRUNCATE TABLE truncate_schema.truncate_tbl; SELECT count(*) FROM truncate_schema.truncate_tbl; count ------- 0 (1 row) \c - :current_user -- cleanup DROP SCHEMA truncate_schema CASCADE; NOTICE: drop cascades to foreign table truncate_schema.truncate_tbl DROP USER truncate_user; -- verify files are removed SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; count ------- 0 (1 row) cstore_fdw-1.7.0/expected/truncate_0.out000066400000000000000000000142431362275575300202770ustar00rootroot00000000000000-- -- Test the TRUNCATE TABLE command for cstore_fdw tables. -- -- print whether we're using version > 10 to make version-specific tests clear SHOW server_version \gset SELECT substring(:'server_version', '\d+')::int > 10 AS version_above_ten; version_above_ten ------------------- f (1 row) -- Check that files for the automatically managed table exist in the -- cstore_fdw/{databaseoid} directory. SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; count ------- 0 (1 row) -- CREATE a cstore_fdw table, fill with some data -- CREATE FOREIGN TABLE cstore_truncate_test (a int, b int) SERVER cstore_server; CREATE FOREIGN TABLE cstore_truncate_test_second (a int, b int) SERVER cstore_server; CREATE FOREIGN TABLE cstore_truncate_test_compressed (a int, b int) SERVER cstore_server OPTIONS (compression 'pglz'); CREATE TABLE cstore_truncate_test_regular (a int, b int); INSERT INTO cstore_truncate_test select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_compressed select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_compressed select a, a from generate_series(1, 10) a; -- query rows SELECT * FROM cstore_truncate_test; a | b ----+---- 1 | 1 2 | 2 3 | 3 4 | 4 5 | 5 6 | 6 7 | 7 8 | 8 9 | 9 10 | 10 (10 rows) TRUNCATE TABLE cstore_truncate_test; SELECT * FROM cstore_truncate_test; a | b ---+--- (0 rows) SELECT COUNT(*) from cstore_truncate_test; count ------- 0 (1 row) SELECT count(*) FROM cstore_truncate_test_compressed; count ------- 20 (1 row) TRUNCATE TABLE cstore_truncate_test_compressed; SELECT count(*) FROM cstore_truncate_test_compressed; count ------- 0 (1 row) SELECT cstore_table_size('cstore_truncate_test_compressed'); cstore_table_size ------------------- 26 (1 row) -- make sure data files still present SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; count ------- 6 (1 row) INSERT INTO cstore_truncate_test select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_regular select a, a from generate_series(10, 20) a; INSERT INTO cstore_truncate_test_second select a, a from generate_series(20, 30) a; SELECT * from cstore_truncate_test; a | b ----+---- 1 | 1 2 | 2 3 | 3 4 | 4 5 | 5 6 | 6 7 | 7 8 | 8 9 | 9 10 | 10 (10 rows) SELECT * from cstore_truncate_test_second; a | b ----+---- 20 | 20 21 | 21 22 | 22 23 | 23 24 | 24 25 | 25 26 | 26 27 | 27 28 | 28 29 | 29 30 | 30 (11 rows) SELECT * from cstore_truncate_test_regular; a | b ----+---- 10 | 10 11 | 11 12 | 12 13 | 13 14 | 14 15 | 15 16 | 16 17 | 17 18 | 18 19 | 19 20 | 20 (11 rows) -- make sure multi truncate works -- notice that the same table might be repeated TRUNCATE TABLE cstore_truncate_test, cstore_truncate_test_regular, cstore_truncate_test_second, cstore_truncate_test; SELECT * from cstore_truncate_test; a | b ---+--- (0 rows) SELECT * from cstore_truncate_test_second; a | b ---+--- (0 rows) SELECT * from cstore_truncate_test_regular; a | b ---+--- (0 rows) -- test if truncate on empty table works TRUNCATE TABLE cstore_truncate_test; SELECT * from cstore_truncate_test; a | b ---+--- (0 rows) -- test if a cached truncate from a pl/pgsql function works CREATE FUNCTION cstore_truncate_test_regular_func() RETURNS void AS $$ BEGIN INSERT INTO cstore_truncate_test_regular select a, a from generate_series(1, 10) a; TRUNCATE TABLE cstore_truncate_test_regular; END;$$ LANGUAGE plpgsql; SELECT cstore_truncate_test_regular_func(); cstore_truncate_test_regular_func ----------------------------------- (1 row) -- the cached plans are used stating from the second call SELECT cstore_truncate_test_regular_func(); cstore_truncate_test_regular_func ----------------------------------- (1 row) DROP FUNCTION cstore_truncate_test_regular_func(); DROP FOREIGN TABLE cstore_truncate_test, cstore_truncate_test_second; DROP TABLE cstore_truncate_test_regular; DROP FOREIGN TABLE cstore_truncate_test_compressed; -- test truncate with schema CREATE SCHEMA truncate_schema; CREATE FOREIGN TABLE truncate_schema.truncate_tbl (id int) SERVER cstore_server OPTIONS(compression 'pglz'); INSERT INTO truncate_schema.truncate_tbl SELECT generate_series(1, 100); SELECT COUNT(*) FROM truncate_schema.truncate_tbl; count ------- 100 (1 row) TRUNCATE TABLE truncate_schema.truncate_tbl; SELECT COUNT(*) FROM truncate_schema.truncate_tbl; count ------- 0 (1 row) INSERT INTO truncate_schema.truncate_tbl SELECT generate_series(1, 100); -- create a user that can not truncate CREATE USER truncate_user; GRANT USAGE ON SCHEMA truncate_schema TO truncate_user; GRANT SELECT ON TABLE truncate_schema.truncate_tbl TO truncate_user; REVOKE TRUNCATE ON TABLE truncate_schema.truncate_tbl FROM truncate_user; SELECT current_user \gset \c - truncate_user -- verify truncate command fails and check number of rows SELECT count(*) FROM truncate_schema.truncate_tbl; count ------- 100 (1 row) TRUNCATE TABLE truncate_schema.truncate_tbl; ERROR: permission denied for relation truncate_tbl SELECT count(*) FROM truncate_schema.truncate_tbl; count ------- 100 (1 row) -- switch to super user, grant truncate to truncate_user \c - :current_user GRANT TRUNCATE ON TABLE truncate_schema.truncate_tbl TO truncate_user; -- verify truncate_user can truncate now \c - truncate_user SELECT count(*) FROM truncate_schema.truncate_tbl; count ------- 100 (1 row) TRUNCATE TABLE truncate_schema.truncate_tbl; SELECT count(*) FROM truncate_schema.truncate_tbl; count ------- 0 (1 row) \c - :current_user -- cleanup DROP SCHEMA truncate_schema CASCADE; NOTICE: drop cascades to foreign table truncate_schema.truncate_tbl DROP USER truncate_user; -- verify files are removed SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; count ------- 0 (1 row) cstore_fdw-1.7.0/input/000077500000000000000000000000001362275575300150345ustar00rootroot00000000000000cstore_fdw-1.7.0/input/block_filtering.source000066400000000000000000000054151362275575300214200ustar00rootroot00000000000000-- -- Test block filtering in cstore_fdw using min/max values in stripe skip lists. -- -- -- filtered_row_count returns number of rows filtered by the WHERE clause. -- If blocks get filtered by cstore_fdw, less rows are passed to WHERE -- clause, so this function should return a lower number. -- CREATE OR REPLACE FUNCTION filtered_row_count (query text) RETURNS bigint AS $$ DECLARE result bigint; rec text; BEGIN result := 0; FOR rec IN EXECUTE 'EXPLAIN ANALYZE ' || query LOOP IF rec ~ '^\s+Rows Removed by Filter' then result := regexp_replace(rec, '[^0-9]*', '', 'g'); END IF; END LOOP; RETURN result; END; $$ LANGUAGE PLPGSQL; -- Create and load data CREATE FOREIGN TABLE test_block_filtering (a int) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/block_filtering.cstore', block_row_count '1000', stripe_row_count '2000'); COPY test_block_filtering FROM '@abs_srcdir@/data/block_filtering.csv' WITH CSV; -- Verify that filtered_row_count is less than 1000 for the following queries SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 200'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a > 200'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 9900'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a > 9900'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 0'); -- Verify that filtered_row_count is less than 2000 for the following queries SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a BETWEEN 1 AND 10'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a BETWEEN 990 AND 2010'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a BETWEEN -10 AND 0'); -- Load data for second time and verify that filtered_row_count is exactly twice as before COPY test_block_filtering FROM '@abs_srcdir@/data/block_filtering.csv' WITH CSV; SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 200'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 0'); SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a BETWEEN 990 AND 2010'); -- Verify that we are fine with collations which use a different alphabet order CREATE FOREIGN TABLE collation_block_filtering_test(A text collate "da_DK") SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/collation_block_filtering.cstore'); COPY collation_block_filtering_test FROM STDIN; A Å B \. SELECT * FROM collation_block_filtering_test WHERE A > 'B'; cstore_fdw-1.7.0/input/copyto.source000066400000000000000000000011371362275575300175750ustar00rootroot00000000000000-- -- Test copying data from cstore_fdw tables. -- CREATE FOREIGN TABLE test_contestant(handle TEXT, birthdate DATE, rating INT, percentile FLOAT, country CHAR(3), achievements TEXT[]) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/test_contestant.cstore'); -- load table data from file COPY test_contestant FROM '@abs_srcdir@/data/contestants.1.csv' WITH CSV; -- export using COPY table TO ... COPY test_contestant TO STDOUT; -- export using COPY (SELECT * FROM table) TO ... COPY (select * from test_contestant) TO STDOUT; DROP FOREIGN TABLE test_contestant CASCADE; cstore_fdw-1.7.0/input/create.source000066400000000000000000000030371362275575300175240ustar00rootroot00000000000000-- -- Test the CREATE statements related to cstore_fdw. -- -- Install cstore_fdw CREATE EXTENSION cstore_fdw; CREATE SERVER cstore_server FOREIGN DATA WRAPPER cstore_fdw; -- Validator tests CREATE FOREIGN TABLE test_validator_invalid_option () SERVER cstore_server OPTIONS(filename 'data.cstore', bad_option_name '1'); -- ERROR CREATE FOREIGN TABLE test_validator_invalid_stripe_row_count () SERVER cstore_server OPTIONS(filename 'data.cstore', stripe_row_count '0'); -- ERROR CREATE FOREIGN TABLE test_validator_invalid_block_row_count () SERVER cstore_server OPTIONS(filename 'data.cstore', block_row_count '0'); -- ERROR CREATE FOREIGN TABLE test_validator_invalid_compression_type () SERVER cstore_server OPTIONS(filename 'data.cstore', compression 'invalid_compression'); -- ERROR -- Invalid file path test CREATE FOREIGN TABLE test_invalid_file_path () SERVER cstore_server OPTIONS(filename 'bad_directory_path/bad_file_path'); --ERROR -- Create uncompressed table CREATE FOREIGN TABLE contestant (handle TEXT, birthdate DATE, rating INT, percentile FLOAT, country CHAR(3), achievements TEXT[]) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/contestant.cstore'); -- Create compressed table with automatically determined file path CREATE FOREIGN TABLE contestant_compressed (handle TEXT, birthdate DATE, rating INT, percentile FLOAT, country CHAR(3), achievements TEXT[]) SERVER cstore_server OPTIONS(compression 'pglz'); -- Test that querying an empty table works ANALYZE contestant; SELECT count(*) FROM contestant; cstore_fdw-1.7.0/input/data_types.source000066400000000000000000000044451362275575300204220ustar00rootroot00000000000000-- -- Test loading and reading different data types to/from cstore_fdw foreign tables. -- -- Settings to make the result deterministic SET datestyle = "ISO, YMD"; SET timezone to 'GMT'; SET intervalstyle TO 'POSTGRES_VERBOSE'; -- Test array types CREATE FOREIGN TABLE test_array_types (int_array int[], bigint_array bigint[], text_array text[]) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/array_types.cstore'); COPY test_array_types FROM '@abs_srcdir@/data/array_types.csv' WITH CSV; SELECT * FROM test_array_types; -- Test date/time types CREATE FOREIGN TABLE test_datetime_types (timestamp timestamp, timestamp_with_timezone timestamp with time zone, date date, time time, interval interval) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/datetime_types.cstore'); COPY test_datetime_types FROM '@abs_srcdir@/data/datetime_types.csv' WITH CSV; SELECT * FROM test_datetime_types; -- Test enum and composite types CREATE TYPE enum_type AS ENUM ('a', 'b', 'c'); CREATE TYPE composite_type AS (a int, b text); CREATE FOREIGN TABLE test_enum_and_composite_types (enum enum_type, composite composite_type) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/enum_and_composite_types.cstore'); COPY test_enum_and_composite_types FROM '@abs_srcdir@/data/enum_and_composite_types.csv' WITH CSV; SELECT * FROM test_enum_and_composite_types; -- Test range types CREATE FOREIGN TABLE test_range_types (int4range int4range, int8range int8range, numrange numrange, tsrange tsrange) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/range_types.cstore'); COPY test_range_types FROM '@abs_srcdir@/data/range_types.csv' WITH CSV; SELECT * FROM test_range_types; -- Test other types CREATE FOREIGN TABLE test_other_types (bool boolean, bytea bytea, money money, inet inet, bitstring bit varying(5), uuid uuid, json json) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/other_types.cstore'); COPY test_other_types FROM '@abs_srcdir@/data/other_types.csv' WITH CSV; SELECT * FROM test_other_types; -- Test null values CREATE FOREIGN TABLE test_null_values (a int, b int[], c composite_type) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/null_values.cstore'); COPY test_null_values FROM '@abs_srcdir@/data/null_values.csv' WITH CSV; SELECT * FROM test_null_values; cstore_fdw-1.7.0/input/load.source000066400000000000000000000023241362275575300171760ustar00rootroot00000000000000-- -- Test loading data into cstore_fdw tables. -- -- COPY with incorrect delimiter COPY contestant FROM '@abs_srcdir@/data/contestants.1.csv' WITH DELIMITER '|'; -- ERROR -- COPY with invalid program COPY contestant FROM PROGRAM 'invalid_program' WITH CSV; -- ERROR -- COPY into uncompressed table from file COPY contestant FROM '@abs_srcdir@/data/contestants.1.csv' WITH CSV; -- COPY into uncompressed table from program COPY contestant FROM PROGRAM 'cat @abs_srcdir@/data/contestants.2.csv' WITH CSV; -- COPY into compressed table COPY contestant_compressed FROM '@abs_srcdir@/data/contestants.1.csv' WITH CSV; -- COPY into uncompressed table from program COPY contestant_compressed FROM PROGRAM 'cat @abs_srcdir@/data/contestants.2.csv' WITH CSV; -- Test column list CREATE FOREIGN TABLE famous_constants (id int, name text, value real) SERVER cstore_server; COPY famous_constants (value, name, id) FROM STDIN WITH CSV; 3.141,pi,1 2.718,e,2 0.577,gamma,3 5.291e-11,bohr radius,4 \. COPY famous_constants (name, value) FROM STDIN WITH CSV; avagadro,6.022e23 electron mass,9.109e-31 proton mass,1.672e-27 speed of light,2.997e8 \. SELECT * FROM famous_constants ORDER BY id, name; DROP FOREIGN TABLE famous_constants; cstore_fdw-1.7.0/output/000077500000000000000000000000001362275575300152355ustar00rootroot00000000000000cstore_fdw-1.7.0/output/block_filtering.source000066400000000000000000000071361362275575300216230ustar00rootroot00000000000000-- -- Test block filtering in cstore_fdw using min/max values in stripe skip lists. -- -- -- filtered_row_count returns number of rows filtered by the WHERE clause. -- If blocks get filtered by cstore_fdw, less rows are passed to WHERE -- clause, so this function should return a lower number. -- CREATE OR REPLACE FUNCTION filtered_row_count (query text) RETURNS bigint AS $$ DECLARE result bigint; rec text; BEGIN result := 0; FOR rec IN EXECUTE 'EXPLAIN ANALYZE ' || query LOOP IF rec ~ '^\s+Rows Removed by Filter' then result := regexp_replace(rec, '[^0-9]*', '', 'g'); END IF; END LOOP; RETURN result; END; $$ LANGUAGE PLPGSQL; -- Create and load data CREATE FOREIGN TABLE test_block_filtering (a int) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/block_filtering.cstore', block_row_count '1000', stripe_row_count '2000'); COPY test_block_filtering FROM '@abs_srcdir@/data/block_filtering.csv' WITH CSV; -- Verify that filtered_row_count is less than 1000 for the following queries SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering'); filtered_row_count -------------------- 0 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 200'); filtered_row_count -------------------- 801 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a > 200'); filtered_row_count -------------------- 200 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 9900'); filtered_row_count -------------------- 101 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a > 9900'); filtered_row_count -------------------- 900 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 0'); filtered_row_count -------------------- 0 (1 row) -- Verify that filtered_row_count is less than 2000 for the following queries SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a BETWEEN 1 AND 10'); filtered_row_count -------------------- 990 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a BETWEEN 990 AND 2010'); filtered_row_count -------------------- 1979 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a BETWEEN -10 AND 0'); filtered_row_count -------------------- 0 (1 row) -- Load data for second time and verify that filtered_row_count is exactly twice as before COPY test_block_filtering FROM '@abs_srcdir@/data/block_filtering.csv' WITH CSV; SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 200'); filtered_row_count -------------------- 1602 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a < 0'); filtered_row_count -------------------- 0 (1 row) SELECT filtered_row_count('SELECT count(*) FROM test_block_filtering WHERE a BETWEEN 990 AND 2010'); filtered_row_count -------------------- 3958 (1 row) -- Verify that we are fine with collations which use a different alphabet order CREATE FOREIGN TABLE collation_block_filtering_test(A text collate "da_DK") SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/collation_block_filtering.cstore'); COPY collation_block_filtering_test FROM STDIN; SELECT * FROM collation_block_filtering_test WHERE A > 'B'; a --- Å (1 row) cstore_fdw-1.7.0/output/copyto.source000066400000000000000000000016271362275575300200020ustar00rootroot00000000000000-- -- Test copying data from cstore_fdw tables. -- CREATE FOREIGN TABLE test_contestant(handle TEXT, birthdate DATE, rating INT, percentile FLOAT, country CHAR(3), achievements TEXT[]) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/test_contestant.cstore'); -- load table data from file COPY test_contestant FROM '@abs_srcdir@/data/contestants.1.csv' WITH CSV; -- export using COPY table TO ... COPY test_contestant TO STDOUT; a 01-10-1990 2090 97.1 XA {a} b 11-01-1990 2203 98.1 XA {a,b} c 11-01-1988 2907 99.4 XB {w,y} d 05-05-1985 2314 98.3 XB {} e 05-05-1995 2236 98.2 XC {a} -- export using COPY (SELECT * FROM table) TO ... COPY (select * from test_contestant) TO STDOUT; a 01-10-1990 2090 97.1 XA {a} b 11-01-1990 2203 98.1 XA {a,b} c 11-01-1988 2907 99.4 XB {w,y} d 05-05-1985 2314 98.3 XB {} e 05-05-1995 2236 98.2 XC {a} DROP FOREIGN TABLE test_contestant CASCADE; cstore_fdw-1.7.0/output/create.source000066400000000000000000000040621362275575300177240ustar00rootroot00000000000000-- -- Test the CREATE statements related to cstore_fdw. -- -- Install cstore_fdw CREATE EXTENSION cstore_fdw; CREATE SERVER cstore_server FOREIGN DATA WRAPPER cstore_fdw; -- Validator tests CREATE FOREIGN TABLE test_validator_invalid_option () SERVER cstore_server OPTIONS(filename 'data.cstore', bad_option_name '1'); -- ERROR ERROR: invalid option "bad_option_name" HINT: Valid options in this context are: filename, compression, stripe_row_count, block_row_count CREATE FOREIGN TABLE test_validator_invalid_stripe_row_count () SERVER cstore_server OPTIONS(filename 'data.cstore', stripe_row_count '0'); -- ERROR ERROR: invalid stripe row count HINT: Stripe row count must be an integer between 1000 and 10000000 CREATE FOREIGN TABLE test_validator_invalid_block_row_count () SERVER cstore_server OPTIONS(filename 'data.cstore', block_row_count '0'); -- ERROR ERROR: invalid block row count HINT: Block row count must be an integer between 1000 and 100000 CREATE FOREIGN TABLE test_validator_invalid_compression_type () SERVER cstore_server OPTIONS(filename 'data.cstore', compression 'invalid_compression'); -- ERROR ERROR: invalid compression type HINT: Valid options are: none, pglz -- Invalid file path test CREATE FOREIGN TABLE test_invalid_file_path () SERVER cstore_server OPTIONS(filename 'bad_directory_path/bad_file_path'); --ERROR ERROR: could not open file "bad_directory_path/bad_file_path" for writing: No such file or directory -- Create uncompressed table CREATE FOREIGN TABLE contestant (handle TEXT, birthdate DATE, rating INT, percentile FLOAT, country CHAR(3), achievements TEXT[]) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/contestant.cstore'); -- Create compressed table with automatically determined file path CREATE FOREIGN TABLE contestant_compressed (handle TEXT, birthdate DATE, rating INT, percentile FLOAT, country CHAR(3), achievements TEXT[]) SERVER cstore_server OPTIONS(compression 'pglz'); -- Test that querying an empty table works ANALYZE contestant; SELECT count(*) FROM contestant; count ------- 0 (1 row) cstore_fdw-1.7.0/output/data_types.source000066400000000000000000000075761362275575300206330ustar00rootroot00000000000000-- -- Test loading and reading different data types to/from cstore_fdw foreign tables. -- -- Settings to make the result deterministic SET datestyle = "ISO, YMD"; SET timezone to 'GMT'; SET intervalstyle TO 'POSTGRES_VERBOSE'; -- Test array types CREATE FOREIGN TABLE test_array_types (int_array int[], bigint_array bigint[], text_array text[]) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/array_types.cstore'); COPY test_array_types FROM '@abs_srcdir@/data/array_types.csv' WITH CSV; SELECT * FROM test_array_types; int_array | bigint_array | text_array --------------------------+--------------------------------------------+------------ {1,2,3} | {1,2,3} | {a,b,c} {} | {} | {} {-2147483648,2147483647} | {-9223372036854775808,9223372036854775807} | {""} (3 rows) -- Test date/time types CREATE FOREIGN TABLE test_datetime_types (timestamp timestamp, timestamp_with_timezone timestamp with time zone, date date, time time, interval interval) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/datetime_types.cstore'); COPY test_datetime_types FROM '@abs_srcdir@/data/datetime_types.csv' WITH CSV; SELECT * FROM test_datetime_types; timestamp | timestamp_with_timezone | date | time | interval ---------------------+-------------------------+------------+----------+----------- 2000-01-02 04:05:06 | 1999-01-08 12:05:06+00 | 2000-01-02 | 04:05:06 | @ 4 hours 1970-01-01 00:00:00 | infinity | -infinity | 00:00:00 | @ 0 (2 rows) -- Test enum and composite types CREATE TYPE enum_type AS ENUM ('a', 'b', 'c'); CREATE TYPE composite_type AS (a int, b text); CREATE FOREIGN TABLE test_enum_and_composite_types (enum enum_type, composite composite_type) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/enum_and_composite_types.cstore'); COPY test_enum_and_composite_types FROM '@abs_srcdir@/data/enum_and_composite_types.csv' WITH CSV; SELECT * FROM test_enum_and_composite_types; enum | composite ------+----------- a | (2,b) b | (3,c) (2 rows) -- Test range types CREATE FOREIGN TABLE test_range_types (int4range int4range, int8range int8range, numrange numrange, tsrange tsrange) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/range_types.cstore'); COPY test_range_types FROM '@abs_srcdir@/data/range_types.csv' WITH CSV; SELECT * FROM test_range_types; int4range | int8range | numrange | tsrange -----------+-----------+----------+----------------------------------------------- [1,3) | [1,3) | [1,3) | ["2000-01-02 00:30:00","2010-02-03 12:30:00") empty | [1,) | (,) | empty (2 rows) -- Test other types CREATE FOREIGN TABLE test_other_types (bool boolean, bytea bytea, money money, inet inet, bitstring bit varying(5), uuid uuid, json json) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/other_types.cstore'); COPY test_other_types FROM '@abs_srcdir@/data/other_types.csv' WITH CSV; SELECT * FROM test_other_types; bool | bytea | money | inet | bitstring | uuid | json ------+------------+-------+-------------+-----------+--------------------------------------+------------------ f | \xdeadbeef | $1.00 | 192.168.1.2 | 10101 | a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11 | {"key": "value"} t | \xcdb0 | $1.50 | 127.0.0.1 | | a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11 | [] (2 rows) -- Test null values CREATE FOREIGN TABLE test_null_values (a int, b int[], c composite_type) SERVER cstore_server OPTIONS(filename '@abs_srcdir@/data/null_values.cstore'); COPY test_null_values FROM '@abs_srcdir@/data/null_values.csv' WITH CSV; SELECT * FROM test_null_values; a | b | c ---+--------+----- | {NULL} | (,) | | (2 rows) cstore_fdw-1.7.0/output/load.source000066400000000000000000000027701362275575300174040ustar00rootroot00000000000000-- -- Test loading data into cstore_fdw tables. -- -- COPY with incorrect delimiter COPY contestant FROM '@abs_srcdir@/data/contestants.1.csv' WITH DELIMITER '|'; -- ERROR ERROR: missing data for column "birthdate" -- COPY with invalid program COPY contestant FROM PROGRAM 'invalid_program' WITH CSV; -- ERROR ERROR: program "invalid_program" failed DETAIL: command not found -- COPY into uncompressed table from file COPY contestant FROM '@abs_srcdir@/data/contestants.1.csv' WITH CSV; -- COPY into uncompressed table from program COPY contestant FROM PROGRAM 'cat @abs_srcdir@/data/contestants.2.csv' WITH CSV; -- COPY into compressed table COPY contestant_compressed FROM '@abs_srcdir@/data/contestants.1.csv' WITH CSV; -- COPY into uncompressed table from program COPY contestant_compressed FROM PROGRAM 'cat @abs_srcdir@/data/contestants.2.csv' WITH CSV; -- Test column list CREATE FOREIGN TABLE famous_constants (id int, name text, value real) SERVER cstore_server; COPY famous_constants (value, name, id) FROM STDIN WITH CSV; COPY famous_constants (name, value) FROM STDIN WITH CSV; SELECT * FROM famous_constants ORDER BY id, name; id | name | value ----+----------------+----------- 1 | pi | 3.141 2 | e | 2.718 3 | gamma | 0.577 4 | bohr radius | 5.291e-11 | avagadro | 6.022e+23 | electron mass | 9.109e-31 | proton mass | 1.672e-27 | speed of light | 2.997e+08 (8 rows) DROP FOREIGN TABLE famous_constants; cstore_fdw-1.7.0/sql/000077500000000000000000000000001362275575300144745ustar00rootroot00000000000000cstore_fdw-1.7.0/sql/alter.sql000066400000000000000000000051221362275575300163240ustar00rootroot00000000000000-- -- Testing ALTER TABLE on cstore_fdw tables. -- CREATE FOREIGN TABLE test_alter_table (a int, b int, c int) SERVER cstore_server; WITH sample_data AS (VALUES (1, 2, 3), (4, 5, 6), (7, 8, 9) ) INSERT INTO test_alter_table SELECT * FROM sample_data; -- drop a column ALTER FOREIGN TABLE test_alter_table DROP COLUMN a; -- test analyze ANALYZE test_alter_table; -- verify select queries run as expected SELECT * FROM test_alter_table; SELECT a FROM test_alter_table; SELECT b FROM test_alter_table; -- verify insert runs as expected INSERT INTO test_alter_table (SELECT 3, 5, 8); INSERT INTO test_alter_table (SELECT 5, 8); -- add a column with no defaults ALTER FOREIGN TABLE test_alter_table ADD COLUMN d int; SELECT * FROM test_alter_table; INSERT INTO test_alter_table (SELECT 3, 5, 8); SELECT * FROM test_alter_table; -- add a fixed-length column with default value ALTER FOREIGN TABLE test_alter_table ADD COLUMN e int default 3; SELECT * from test_alter_table; INSERT INTO test_alter_table (SELECT 1, 2, 4, 8); SELECT * from test_alter_table; -- add a variable-length column with default value ALTER FOREIGN TABLE test_alter_table ADD COLUMN f text DEFAULT 'TEXT ME'; SELECT * from test_alter_table; INSERT INTO test_alter_table (SELECT 1, 2, 4, 8, 'ABCDEF'); SELECT * from test_alter_table; -- drop couple of columns ALTER FOREIGN TABLE test_alter_table DROP COLUMN c; ALTER FOREIGN TABLE test_alter_table DROP COLUMN e; ANALYZE test_alter_table; SELECT * from test_alter_table; SELECT count(*) from test_alter_table; SELECT count(t.*) from test_alter_table t; -- unsupported default values ALTER FOREIGN TABLE test_alter_table ADD COLUMN g boolean DEFAULT isfinite(current_date); ALTER FOREIGN TABLE test_alter_table ADD COLUMN h DATE DEFAULT current_date; SELECT * FROM test_alter_table; ALTER FOREIGN TABLE test_alter_table ALTER COLUMN g DROP DEFAULT; SELECT * FROM test_alter_table; ALTER FOREIGN TABLE test_alter_table ALTER COLUMN h DROP DEFAULT; ANALYZE test_alter_table; SELECT * FROM test_alter_table; -- unsupported type change ALTER FOREIGN TABLE test_alter_table ADD COLUMN i int; ALTER FOREIGN TABLE test_alter_table ADD COLUMN j float; ALTER FOREIGN TABLE test_alter_table ADD COLUMN k text; -- this is valid type change ALTER FOREIGN TABLE test_alter_table ALTER COLUMN i TYPE float; -- this is not valid ALTER FOREIGN TABLE test_alter_table ALTER COLUMN j TYPE int; -- text / varchar conversion is valid both ways ALTER FOREIGN TABLE test_alter_table ALTER COLUMN k TYPE varchar(20); ALTER FOREIGN TABLE test_alter_table ALTER COLUMN k TYPE text; DROP FOREIGN TABLE test_alter_table; cstore_fdw-1.7.0/sql/analyze.sql000066400000000000000000000004531362275575300166620ustar00rootroot00000000000000-- -- Test the ANALYZE command for cstore_fdw tables. -- -- ANALYZE uncompressed table ANALYZE contestant; SELECT count(*) FROM pg_stats WHERE tablename='contestant'; -- ANALYZE compressed table ANALYZE contestant_compressed; SELECT count(*) FROM pg_stats WHERE tablename='contestant_compressed'; cstore_fdw-1.7.0/sql/drop.sql000066400000000000000000000052271362275575300161670ustar00rootroot00000000000000-- -- Tests the different DROP commands for cstore_fdw tables. -- -- DROP FOREIGN TABL -- DROP SCHEMA -- DROP EXTENSION -- DROP DATABASE -- -- Note that travis does not create -- cstore_fdw extension in default database (postgres). This has caused -- different behavior between travis tests and local tests. Thus -- 'postgres' directory is excluded from comparison to have the same result. -- store postgres database oid SELECT oid postgres_oid FROM pg_database WHERE datname = 'postgres' \gset -- Check that files for the automatically managed table exist in the -- cstore_fdw/{databaseoid} directory. SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; -- DROP cstore_fdw tables DROP FOREIGN TABLE contestant; DROP FOREIGN TABLE contestant_compressed; -- Create a cstore_fdw table under a schema and drop it. CREATE SCHEMA test_schema; CREATE FOREIGN TABLE test_schema.test_table(data int) SERVER cstore_server; DROP SCHEMA test_schema CASCADE; -- Check that the files have been deleted and the directory is empty after the -- DROP table command. SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; SELECT current_database() datname \gset CREATE DATABASE db_to_drop; \c db_to_drop CREATE EXTENSION cstore_fdw; CREATE SERVER cstore_server FOREIGN DATA WRAPPER cstore_fdw; SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() \gset CREATE FOREIGN TABLE test_table(data int) SERVER cstore_server; -- should see 2 files, data and footer file for single table SELECT count(*) FROM pg_ls_dir('cstore_fdw/' || :databaseoid); -- should see 2 directories 1 for each database, excluding postgres database SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text; DROP EXTENSION cstore_fdw CASCADE; -- should only see 1 directory here SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text; -- test database drop CREATE EXTENSION cstore_fdw; CREATE SERVER cstore_server FOREIGN DATA WRAPPER cstore_fdw; SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() \gset CREATE FOREIGN TABLE test_table(data int) SERVER cstore_server; -- should see 2 directories 1 for each database SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text; \c :datname DROP DATABASE db_to_drop; -- should only see 1 directory for the default database SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text; cstore_fdw-1.7.0/sql/functions.sql000066400000000000000000000007551362275575300172340ustar00rootroot00000000000000-- -- Test utility functions for cstore_fdw tables. -- CREATE FOREIGN TABLE empty_table (a int) SERVER cstore_server; CREATE FOREIGN TABLE table_with_data (a int) SERVER cstore_server; CREATE TABLE non_cstore_table (a int); COPY table_with_data FROM STDIN; 1 2 3 \. SELECT cstore_table_size('empty_table') < cstore_table_size('table_with_data'); SELECT cstore_table_size('non_cstore_table'); DROP FOREIGN TABLE empty_table; DROP FOREIGN TABLE table_with_data; DROP TABLE non_cstore_table; cstore_fdw-1.7.0/sql/insert.sql000066400000000000000000000034141362275575300165230ustar00rootroot00000000000000-- -- Testing insert on cstore_fdw tables. -- CREATE FOREIGN TABLE test_insert_command (a int) SERVER cstore_server; -- test single row inserts fail select count(*) from test_insert_command; insert into test_insert_command values(1); select count(*) from test_insert_command; insert into test_insert_command default values; select count(*) from test_insert_command; -- test inserting from another table succeed CREATE TABLE test_insert_command_data (a int); select count(*) from test_insert_command_data; insert into test_insert_command_data values(1); select count(*) from test_insert_command_data; insert into test_insert_command select * from test_insert_command_data; select count(*) from test_insert_command; drop table test_insert_command_data; drop foreign table test_insert_command; -- test long attribute value insertion -- create sufficiently long text so that data is stored in toast CREATE TABLE test_long_text AS SELECT a as int_val, string_agg(random()::text, '') as text_val FROM generate_series(1, 10) a, generate_series(1, 1000) b GROUP BY a ORDER BY a; -- store hash values of text for later comparison CREATE TABLE test_long_text_hash AS SELECT int_val, md5(text_val) AS hash FROM test_long_text; CREATE FOREIGN TABLE test_cstore_long_text(int_val int, text_val text) SERVER cstore_server; -- store long text in cstore table INSERT INTO test_cstore_long_text SELECT * FROM test_long_text; -- drop source table to remove original text from toast DROP TABLE test_long_text; -- check if text data is still available in cstore table -- by comparing previously stored hash. SELECT a.int_val FROM test_long_text_hash a, test_cstore_long_text c WHERE a.int_val = c.int_val AND a.hash = md5(c.text_val); DROP TABLE test_long_text_hash; DROP FOREIGN TABLE test_cstore_long_text; cstore_fdw-1.7.0/sql/query.sql000066400000000000000000000023261362275575300163650ustar00rootroot00000000000000-- -- Test querying cstore_fdw tables. -- -- Settings to make the result deterministic SET datestyle = "ISO, YMD"; -- Query uncompressed data SELECT count(*) FROM contestant; SELECT avg(rating), stddev_samp(rating) FROM contestant; SELECT country, avg(rating) FROM contestant WHERE rating > 2200 GROUP BY country ORDER BY country; SELECT * FROM contestant ORDER BY handle; -- Query compressed data SELECT count(*) FROM contestant_compressed; SELECT avg(rating), stddev_samp(rating) FROM contestant_compressed; SELECT country, avg(rating) FROM contestant_compressed WHERE rating > 2200 GROUP BY country ORDER BY country; SELECT * FROM contestant_compressed ORDER BY handle; -- Verify that we handle whole-row references correctly SELECT to_json(v) FROM contestant v ORDER BY rating LIMIT 1; -- Test variables used in expressions CREATE FOREIGN TABLE union_first (a int, b int) SERVER cstore_server; CREATE FOREIGN TABLE union_second (a int, b int) SERVER cstore_server; INSERT INTO union_first SELECT a, a FROM generate_series(1, 5) a; INSERT INTO union_second SELECT a, a FROM generate_series(11, 15) a; (SELECT a*1, b FROM union_first) union all (SELECT a*1, b FROM union_second); DROP FOREIGN TABLE union_first, union_second; cstore_fdw-1.7.0/sql/truncate.sql000066400000000000000000000114651362275575300170510ustar00rootroot00000000000000-- -- Test the TRUNCATE TABLE command for cstore_fdw tables. -- -- print whether we're using version > 10 to make version-specific tests clear SHOW server_version \gset SELECT substring(:'server_version', '\d+')::int > 10 AS version_above_ten; -- Check that files for the automatically managed table exist in the -- cstore_fdw/{databaseoid} directory. SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; -- CREATE a cstore_fdw table, fill with some data -- CREATE FOREIGN TABLE cstore_truncate_test (a int, b int) SERVER cstore_server; CREATE FOREIGN TABLE cstore_truncate_test_second (a int, b int) SERVER cstore_server; CREATE FOREIGN TABLE cstore_truncate_test_compressed (a int, b int) SERVER cstore_server OPTIONS (compression 'pglz'); CREATE TABLE cstore_truncate_test_regular (a int, b int); INSERT INTO cstore_truncate_test select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_compressed select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_compressed select a, a from generate_series(1, 10) a; -- query rows SELECT * FROM cstore_truncate_test; TRUNCATE TABLE cstore_truncate_test; SELECT * FROM cstore_truncate_test; SELECT COUNT(*) from cstore_truncate_test; SELECT count(*) FROM cstore_truncate_test_compressed; TRUNCATE TABLE cstore_truncate_test_compressed; SELECT count(*) FROM cstore_truncate_test_compressed; SELECT cstore_table_size('cstore_truncate_test_compressed'); -- make sure data files still present SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2; INSERT INTO cstore_truncate_test select a, a from generate_series(1, 10) a; INSERT INTO cstore_truncate_test_regular select a, a from generate_series(10, 20) a; INSERT INTO cstore_truncate_test_second select a, a from generate_series(20, 30) a; SELECT * from cstore_truncate_test; SELECT * from cstore_truncate_test_second; SELECT * from cstore_truncate_test_regular; -- make sure multi truncate works -- notice that the same table might be repeated TRUNCATE TABLE cstore_truncate_test, cstore_truncate_test_regular, cstore_truncate_test_second, cstore_truncate_test; SELECT * from cstore_truncate_test; SELECT * from cstore_truncate_test_second; SELECT * from cstore_truncate_test_regular; -- test if truncate on empty table works TRUNCATE TABLE cstore_truncate_test; SELECT * from cstore_truncate_test; -- test if a cached truncate from a pl/pgsql function works CREATE FUNCTION cstore_truncate_test_regular_func() RETURNS void AS $$ BEGIN INSERT INTO cstore_truncate_test_regular select a, a from generate_series(1, 10) a; TRUNCATE TABLE cstore_truncate_test_regular; END;$$ LANGUAGE plpgsql; SELECT cstore_truncate_test_regular_func(); -- the cached plans are used stating from the second call SELECT cstore_truncate_test_regular_func(); DROP FUNCTION cstore_truncate_test_regular_func(); DROP FOREIGN TABLE cstore_truncate_test, cstore_truncate_test_second; DROP TABLE cstore_truncate_test_regular; DROP FOREIGN TABLE cstore_truncate_test_compressed; -- test truncate with schema CREATE SCHEMA truncate_schema; CREATE FOREIGN TABLE truncate_schema.truncate_tbl (id int) SERVER cstore_server OPTIONS(compression 'pglz'); INSERT INTO truncate_schema.truncate_tbl SELECT generate_series(1, 100); SELECT COUNT(*) FROM truncate_schema.truncate_tbl; TRUNCATE TABLE truncate_schema.truncate_tbl; SELECT COUNT(*) FROM truncate_schema.truncate_tbl; INSERT INTO truncate_schema.truncate_tbl SELECT generate_series(1, 100); -- create a user that can not truncate CREATE USER truncate_user; GRANT USAGE ON SCHEMA truncate_schema TO truncate_user; GRANT SELECT ON TABLE truncate_schema.truncate_tbl TO truncate_user; REVOKE TRUNCATE ON TABLE truncate_schema.truncate_tbl FROM truncate_user; SELECT current_user \gset \c - truncate_user -- verify truncate command fails and check number of rows SELECT count(*) FROM truncate_schema.truncate_tbl; TRUNCATE TABLE truncate_schema.truncate_tbl; SELECT count(*) FROM truncate_schema.truncate_tbl; -- switch to super user, grant truncate to truncate_user \c - :current_user GRANT TRUNCATE ON TABLE truncate_schema.truncate_tbl TO truncate_user; -- verify truncate_user can truncate now \c - truncate_user SELECT count(*) FROM truncate_schema.truncate_tbl; TRUNCATE TABLE truncate_schema.truncate_tbl; SELECT count(*) FROM truncate_schema.truncate_tbl; \c - :current_user -- cleanup DROP SCHEMA truncate_schema CASCADE; DROP USER truncate_user; -- verify files are removed SELECT count(*) FROM ( SELECT pg_ls_dir('cstore_fdw/' || databaseoid ) FROM ( SELECT oid::text databaseoid FROM pg_database WHERE datname = current_database() ) AS q1) AS q2;