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4f865f7870
After inserts go into a compressed chunk, the chunk is marked as unordered.This PR adds a new function recompress_chunk that compresses the data and sets the status back to compressed. Further optimizations for this function are planned but not part of this PR. This function can be invoked by calling SELECT recompress_chunk(<chunk_name>). recompress_chunk function is automatically invoked by the compression policy job, when it sees that a chunk is in unordered state.
37 lines
1.4 KiB
SQL
37 lines
1.4 KiB
SQL
-- This file and its contents are licensed under the Apache License 2.0.
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-- Please see the included NOTICE for copyright information and
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-- LICENSE-APACHE for a copy of the license.
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-- chunk - the OID of the chunk to be CLUSTERed
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-- index - the OID of the index to be CLUSTERed on, or NULL to use the index
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-- last used
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CREATE OR REPLACE FUNCTION reorder_chunk(
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chunk REGCLASS,
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index REGCLASS=NULL,
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verbose BOOLEAN=FALSE
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) RETURNS VOID AS '@MODULE_PATHNAME@', 'ts_reorder_chunk' LANGUAGE C VOLATILE;
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CREATE OR REPLACE FUNCTION move_chunk(
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chunk REGCLASS,
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destination_tablespace Name,
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index_destination_tablespace Name=NULL,
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reorder_index REGCLASS=NULL,
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verbose BOOLEAN=FALSE
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) RETURNS VOID AS '@MODULE_PATHNAME@', 'ts_move_chunk' LANGUAGE C VOLATILE;
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CREATE OR REPLACE FUNCTION compress_chunk(
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uncompressed_chunk REGCLASS,
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if_not_compressed BOOLEAN = false
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) RETURNS REGCLASS AS '@MODULE_PATHNAME@', 'ts_compress_chunk' LANGUAGE C STRICT VOLATILE;
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CREATE OR REPLACE FUNCTION decompress_chunk(
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uncompressed_chunk REGCLASS,
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if_compressed BOOLEAN = false
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) RETURNS REGCLASS AS '@MODULE_PATHNAME@', 'ts_decompress_chunk' LANGUAGE C STRICT VOLATILE;
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CREATE OR REPLACE FUNCTION recompress_chunk(
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chunk REGCLASS,
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if_not_compressed BOOLEAN = false
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) RETURNS REGCLASS AS '@MODULE_PATHNAME@', 'ts_recompress_chunk' LANGUAGE C STRICT VOLATILE;
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