Fix joins with compressed chunks #6541

akuzm · 2024-01-18T13:18:16Z

We couldn't use parameterized index scan by segmentby column on compressed chunk, effectively making joins on segmentby unusable. We missed this when bulk-updating test references for PG16. The underlying reason is the incorrect creation of equivalence members for segmentby columns of compressed chunk tables. This commit fixes it.

Fixes #6536
Fixes #6424

codecov · 2024-01-18T13:35:34Z

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (acd69d4) 79.74% compared to head (9ca2503) 79.71%.

Files	Patch %	Lines
tsl/src/nodes/decompress_chunk/decompress_chunk.c	93.75%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6541      +/-   ##
==========================================
- Coverage   79.74%   79.71%   -0.03%     
==========================================
  Files         188      188              
  Lines       36736    36688      -48     
  Branches     9288     9271      -17     
==========================================
- Hits        29296    29247      -49     
- Misses       3102     3122      +20     
+ Partials     4338     4319      -19

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github-actions · 2024-01-18T14:44:22Z

@antekresic, @konskov: please review this pull request.

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tsl/test/sql/CMakeLists.txt

We couldn't use parameterized index scan by segmentby column on compressed chunk, effectively making joins on segmentby unusable. We missed this when bulk-updating test references for PG16. The underlying reason is the incorrect creation of equivalence members for segmentby columns of compressed chunk tables. This commit fixes it.

timescale-automation · 2024-01-23T09:22:27Z

Automated backport to 2.13.x not done: cherry-pick failed.

Git status

HEAD detached at origin/2.13.x
You are currently cherry-picking commit d7018953c.
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Changes to be committed:
	new file:   .unreleased/fix-segmentby-em
	renamed:    tsl/test/expected/transparent_decompression_join_index-13.out -> tsl/test/expected/transparent_decompression_join_index.out
	modified:   tsl/test/shared/expected/transparent_decompress_chunk-16.out
	modified:   tsl/test/sql/.gitignore
	modified:   tsl/test/sql/CMakeLists.txt
	renamed:    tsl/test/sql/transparent_decompression_join_index.sql.in -> tsl/test/sql/transparent_decompression_join_index.sql

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   tsl/src/nodes/decompress_chunk/decompress_chunk.c
	both modified:   tsl/test/expected/transparent_decompression-16.out
	deleted by them: tsl/test/expected/transparent_decompression_join_index-14.out
	deleted by them: tsl/test/expected/transparent_decompression_join_index-15.out
	deleted by them: tsl/test/expected/transparent_decompression_join_index-16.out
	both modified:   tsl/test/expected/transparent_decompression_ordered_index-16.out

Job log

@coney21

This release contains performance improvements, an improved hypertable DDL API and bug fixes since the 2.13.1 release. We recommend that you upgrade at the next available opportunity. In addition, it includes these noteworthy features: * Ability to change compression settings on existing compressed hypertables at any time * Reduced locking requirements during chunk recompression * Limiting tuple decompression during DML operations (100k limit, configurable) * Helper functions for determining compression settings **Removal notice: Multi-node support** TimescaleDB 2.13 is the last version that includes multi-node support. Multi-node support is effectively removed in 2.14 version. Learn more about it [here](docs/MultiNodeDeprecation.md). **Deprecation notice: recompress_chunk procedure** TimescaleDB 2.14 is the last version that will include recompress_chunk procedure. Its function will be replaced by compress_chunk function which should work on uncompressed and partially compressed chunk. It should be used to fully compress all chunks. **Features** * #6325 Add plan-time chunk exclusion for real-time CAggs * #6360 Remove support for creating Continuous Aggregates with old format * #6386 Add functions for determining compression defaults * #6410 Remove multinode public API * #6440 Allow SQLValueFunction pushdown into compressed scan * #6463 Support approximate hypertable size * #6513 Make compression settings per chunk * #6529 Remove reindex_relation from recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6545 Remove restrictions for changing compression settings * #6566 Limit tuple decompression during DML operations * #6579 Change compress_chunk and decompress_chunk to idempotent version by default **Bugfixes** * #6541 Inefficient join plans on compressed hypertables. * #6491 Enable now() plantime constification with BETWEEN * #6494 Fix create_hypertable referenced by fk succeeds * #6498 Suboptimal query plans when using time_bucket with query parameters * #6507 time_bucket_gapfill with timezones doesn't handle daylight savings * #6509 Make extension state available through function * #6512 Log extension state changes * #6522 Disallow triggers on CAggs * #6523 Reduce locking level on compressed chunk index during segmentwise recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6571 Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code * #6575 Fix compressed chunk not found during upserts * #6592 Fix recompression policy ignoring partially compressed chunks * #6610 Ensure qsort comparison function is transitive **Thanks** * @coney21 and @GStechschulte for reporting the problem with inefficient join plans on compressed hypertables. * @HollowMan6 for reporting triggers not working on materialized views of CAggs * @jbx1 for reporting suboptimal query plans when using time_bucket with query parameters * @JerkoNikolic for reporting the issue with gapfill and DST * @pdipesh02 for working on removing the old Continuous Aggregate format * @raymalt and @martinhale for reporting very slow query plans on realtime CAggs queries

@coney21

This release contains performance improvements and bug fixes since the 2.13.1 release. We recommend that you upgrade at the next available opportunity. In addition, it includes these noteworthy features: * Ability to change compression settings on existing compressed hypertables at any time. New compression settings take effect on any new chunks that are compressed after the change. * Reduced locking requirements during chunk recompression * Limiting tuple decompression during DML operations to avoid decompressing a lot of tuples and causing storage issues (100k limit, configurable) * Helper functions for determining compression settings **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Multi-node support removal announcement** Following the deprecation announcement for Multi-node in TimescaleDB 2.13, Multi-node is no longer supported starting with TimescaleDB 2.14. TimescaleDB 2.13 is the last version that includes multi-node support. Learn more about it [here](docs/MultiNodeDeprecation.md). If you want to migrate from multi-node TimescaleDB to single-node TimescaleDB, read the [migration documentation](https://docs.timescale.com/migrate/latest/multi-node-to-timescale-service/). **Deprecation notice: recompress_chunk procedure** TimescaleDB 2.14 is the last version that will include the recompress_chunk procedure. Its functionality will be replaced by the compress_chunk function, which, starting on TimescaleDB 2.14, works on both uncompressed and partially compressed chunks. The compress_chunk function should be used going forward to fully compress all types of chunks or even recompress old fully compressed chunks using new compression settings (through the newly introduced recompress optional parameter). **Features** * #6325 Add plan-time chunk exclusion for real-time CAggs * #6360 Remove support for creating Continuous Aggregates with old format * #6386 Add functions for determining compression defaults * #6410 Remove multinode public API * #6440 Allow SQLValueFunction pushdown into compressed scan * #6463 Support approximate hypertable size * #6513 Make compression settings per chunk * #6529 Remove reindex_relation from recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6545 Remove restrictions for changing compression settings * #6566 Limit tuple decompression during DML operations * #6579 Change compress_chunk and decompress_chunk to idempotent version by default * #6608 Add LWLock for OSM usage in loader * #6609 Deprecate recompress_chunk * #6609 Add optional recompress argument to compress_chunk **Bugfixes** * #6541 Inefficient join plans on compressed hypertables. * #6491 Enable now() plantime constification with BETWEEN * #6494 Fix create_hypertable referenced by fk succeeds * #6498 Suboptimal query plans when using time_bucket with query parameters * #6507 time_bucket_gapfill with timezones doesn't handle daylight savings * #6509 Make extension state available through function * #6512 Log extension state changes * #6522 Disallow triggers on CAggs * #6523 Reduce locking level on compressed chunk index during segmentwise recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6571 Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code * #6575 Fix compressed chunk not found during upserts * #6592 Fix recompression policy ignoring partially compressed chunks * #6610 Ensure qsort comparison function is transitive **Thanks** * @coney21 and @GStechschulte for reporting the problem with inefficient join plans on compressed hypertables. * @HollowMan6 for reporting triggers not working on materialized views of CAggs * @jbx1 for reporting suboptimal query plans when using time_bucket with query parameters * @JerkoNikolic for reporting the issue with gapfill and DST * @pdipesh02 for working on removing the old Continuous Aggregate format * @raymalt and @martinhale for reporting very slow query plans on realtime CAggs queries

@coney21

This release contains performance improvements and bug fixes since the 2.13.1 release. We recommend that you upgrade at the next available opportunity. In addition, it includes these noteworthy features: * Ability to change compression settings on existing compressed hypertables at any time. New compression settings take effect on any new chunks that are compressed after the change. * Reduced locking requirements during chunk recompression * Limiting tuple decompression during DML operations to avoid decompressing a lot of tuples and causing storage issues (100k limit, configurable) * Helper functions for determining compression settings **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Multi-node support removal announcement** Following the deprecation announcement for Multi-node in TimescaleDB 2.13, Multi-node is no longer supported starting with TimescaleDB 2.14. TimescaleDB 2.13 is the last version that includes multi-node support. Learn more about it [here](docs/MultiNodeDeprecation.md). If you want to migrate from multi-node TimescaleDB to single-node TimescaleDB, read the [migration documentation](https://docs.timescale.com/migrate/latest/multi-node-to-timescale-service/). **Deprecation notice: recompress_chunk procedure** TimescaleDB 2.14 is the last version that will include the recompress_chunk procedure. Its functionality will be replaced by the compress_chunk function, which, starting on TimescaleDB 2.14, works on both uncompressed and partially compressed chunks. The compress_chunk function should be used going forward to fully compress all types of chunks or even recompress old fully compressed chunks using new compression settings (through the newly introduced recompress optional parameter). **Features** * #6325 Add plan-time chunk exclusion for real-time CAggs * #6360 Remove support for creating Continuous Aggregates with old format * #6386 Add functions for determining compression defaults * #6410 Remove multinode public API * #6440 Allow SQLValueFunction pushdown into compressed scan * #6463 Support approximate hypertable size * #6513 Make compression settings per chunk * #6529 Remove reindex_relation from recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6545 Remove restrictions for changing compression settings * #6566 Limit tuple decompression during DML operations * #6579 Change compress_chunk and decompress_chunk to idempotent version by default * #6608 Add LWLock for OSM usage in loader * #6609 Deprecate recompress_chunk * #6609 Add optional recompress argument to compress_chunk **Bugfixes** * #6541 Inefficient join plans on compressed hypertables. * #6491 Enable now() plantime constification with BETWEEN * #6494 Fix create_hypertable referenced by fk succeeds * #6498 Suboptimal query plans when using time_bucket with query parameters * #6507 time_bucket_gapfill with timezones doesn't handle daylight savings * #6509 Make extension state available through function * #6512 Log extension state changes * #6522 Disallow triggers on CAggs * #6523 Reduce locking level on compressed chunk index during segmentwise recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6571 Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code * #6575 Fix compressed chunk not found during upserts * #6592 Fix recompression policy ignoring partially compressed chunks * #6610 Ensure qsort comparison function is transitive **Thanks** * @coney21 and @GStechschulte for reporting the problem with inefficient join plans on compressed hypertables. * @HollowMan6 for reporting triggers not working on materialized views of CAggs * @jbx1 for reporting suboptimal query plans when using time_bucket with query parameters * @JerkoNikolic for reporting the issue with gapfill and DST * @pdipesh02 for working on removing the old Continuous Aggregate format * @raymalt and @martinhale for reporting very slow query plans on realtime CAggs queries

@coney21

This release contains performance improvements and bug fixes since the 2.13.1 release. We recommend that you upgrade at the next available opportunity. In addition, it includes these noteworthy features: * Ability to change compression settings on existing compressed hypertables at any time. New compression settings take effect on any new chunks that are compressed after the change. * Reduced locking requirements during chunk recompression * Limiting tuple decompression during DML operations to avoid decompressing a lot of tuples and causing storage issues (100k limit, configurable) * Helper functions for determining compression settings **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Multi-node support removal announcement** Following the deprecation announcement for Multi-node in TimescaleDB 2.13, Multi-node is no longer supported starting with TimescaleDB 2.14. TimescaleDB 2.13 is the last version that includes multi-node support. Learn more about it [here](docs/MultiNodeDeprecation.md). If you want to migrate from multi-node TimescaleDB to single-node TimescaleDB, read the [migration documentation](https://docs.timescale.com/migrate/latest/multi-node-to-timescale-service/). **Deprecation notice: recompress_chunk procedure** TimescaleDB 2.14 is the last version that will include the recompress_chunk procedure. Its functionality will be replaced by the compress_chunk function, which, starting on TimescaleDB 2.14, works on both uncompressed and partially compressed chunks. The compress_chunk function should be used going forward to fully compress all types of chunks or even recompress old fully compressed chunks using new compression settings (through the newly introduced recompress optional parameter). **Features** * #6325 Add plan-time chunk exclusion for real-time CAggs * #6360 Remove support for creating Continuous Aggregates with old format * #6386 Add functions for determining compression defaults * #6410 Remove multinode public API * #6440 Allow SQLValueFunction pushdown into compressed scan * #6463 Support approximate hypertable size * #6513 Make compression settings per chunk * #6529 Remove reindex_relation from recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6545 Remove restrictions for changing compression settings * #6566 Limit tuple decompression during DML operations * #6579 Change compress_chunk and decompress_chunk to idempotent version by default * #6608 Add LWLock for OSM usage in loader * #6609 Deprecate recompress_chunk * #6609 Add optional recompress argument to compress_chunk **Bugfixes** * #6541 Inefficient join plans on compressed hypertables. * #6491 Enable now() plantime constification with BETWEEN * #6494 Fix create_hypertable referenced by fk succeeds * #6498 Suboptimal query plans when using time_bucket with query parameters * #6507 time_bucket_gapfill with timezones doesn't handle daylight savings * #6509 Make extension state available through function * #6512 Log extension state changes * #6522 Disallow triggers on CAggs * #6523 Reduce locking level on compressed chunk index during segmentwise recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6571 Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code * #6575 Fix compressed chunk not found during upserts * #6592 Fix recompression policy ignoring partially compressed chunks * #6610 Ensure qsort comparison function is transitive **Thanks** * @coney21 and @GStechschulte for reporting the problem with inefficient join plans on compressed hypertables. * @HollowMan6 for reporting triggers not working on materialized views of CAggs * @jbx1 for reporting suboptimal query plans when using time_bucket with query parameters * @JerkoNikolic for reporting the issue with gapfill and DST * @pdipesh02 for working on removing the old Continuous Aggregate format * @raymalt and @martinhale for reporting very slow query plans on realtime CAggs queries

@coney21

This release contains performance improvements and bug fixes since the 2.13.1 release. We recommend that you upgrade at the next available opportunity. In addition, it includes these noteworthy features: * Ability to change compression settings on existing compressed hypertables at any time. New compression settings take effect on any new chunks that are compressed after the change. * Reduced locking requirements during chunk recompression * Limiting tuple decompression during DML operations to avoid decompressing a lot of tuples and causing storage issues (100k limit, configurable) * Helper functions for determining compression settings **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Multi-node support removal announcement** Following the deprecation announcement for Multi-node in TimescaleDB 2.13, Multi-node is no longer supported starting with TimescaleDB 2.14. TimescaleDB 2.13 is the last version that includes multi-node support. Learn more about it [here](docs/MultiNodeDeprecation.md). If you want to migrate from multi-node TimescaleDB to single-node TimescaleDB, read the [migration documentation](https://docs.timescale.com/migrate/latest/multi-node-to-timescale-service/). **Deprecation notice: recompress_chunk procedure** TimescaleDB 2.14 is the last version that will include the recompress_chunk procedure. Its functionality will be replaced by the compress_chunk function, which, starting on TimescaleDB 2.14, works on both uncompressed and partially compressed chunks. The compress_chunk function should be used going forward to fully compress all types of chunks or even recompress old fully compressed chunks using new compression settings (through the newly introduced recompress optional parameter). **Features** * #6325 Add plan-time chunk exclusion for real-time CAggs * #6360 Remove support for creating Continuous Aggregates with old format * #6386 Add functions for determining compression defaults * #6410 Remove multinode public API * #6440 Allow SQLValueFunction pushdown into compressed scan * #6463 Support approximate hypertable size * #6513 Make compression settings per chunk * #6529 Remove reindex_relation from recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6545 Remove restrictions for changing compression settings * #6566 Limit tuple decompression during DML operations * #6579 Change compress_chunk and decompress_chunk to idempotent version by default * #6608 Add LWLock for OSM usage in loader * #6609 Deprecate recompress_chunk * #6609 Add optional recompress argument to compress_chunk **Bugfixes** * #6541 Inefficient join plans on compressed hypertables. * #6491 Enable now() plantime constification with BETWEEN * #6494 Fix create_hypertable referenced by fk succeeds * #6498 Suboptimal query plans when using time_bucket with query parameters * #6507 time_bucket_gapfill with timezones doesn't handle daylight savings * #6509 Make extension state available through function * #6512 Log extension state changes * #6522 Disallow triggers on CAggs * #6523 Reduce locking level on compressed chunk index during segmentwise recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6571 Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code * #6575 Fix compressed chunk not found during upserts * #6592 Fix recompression policy ignoring partially compressed chunks * #6610 Ensure qsort comparison function is transitive **Thanks** * @coney21 and @GStechschulte for reporting the problem with inefficient join plans on compressed hypertables. * @HollowMan6 for reporting triggers not working on materialized views of CAggs * @jbx1 for reporting suboptimal query plans when using time_bucket with query parameters * @JerkoNikolic for reporting the issue with gapfill and DST * @pdipesh02 for working on removing the old Continuous Aggregate format * @raymalt and @martinhale for reporting very slow query plans on realtime CAggs queries

@coney21

This release contains performance improvements and bug fixes since the 2.13.1 release. We recommend that you upgrade at the next available opportunity. In addition, it includes these noteworthy features: * Ability to change compression settings on existing compressed hypertables at any time. New compression settings take effect on any new chunks that are compressed after the change. * Reduced locking requirements during chunk recompression * Limiting tuple decompression during DML operations to avoid decompressing a lot of tuples and causing storage issues (100k limit, configurable) * Helper functions for determining compression settings **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Multi-node support removal announcement** Following the deprecation announcement for Multi-node in TimescaleDB 2.13, Multi-node is no longer supported starting with TimescaleDB 2.14. TimescaleDB 2.13 is the last version that includes multi-node support. Learn more about it [here](docs/MultiNodeDeprecation.md). If you want to migrate from multi-node TimescaleDB to single-node TimescaleDB, read the [migration documentation](https://docs.timescale.com/migrate/latest/multi-node-to-timescale-service/). **Deprecation notice: recompress_chunk procedure** TimescaleDB 2.14 is the last version that will include the recompress_chunk procedure. Its functionality will be replaced by the compress_chunk function, which, starting on TimescaleDB 2.14, works on both uncompressed and partially compressed chunks. The compress_chunk function should be used going forward to fully compress all types of chunks or even recompress old fully compressed chunks using new compression settings (through the newly introduced recompress optional parameter). **Features** * #6325 Add plan-time chunk exclusion for real-time CAggs * #6360 Remove support for creating Continuous Aggregates with old format * #6386 Add functions for determining compression defaults * #6410 Remove multinode public API * #6440 Allow SQLValueFunction pushdown into compressed scan * #6463 Support approximate hypertable size * #6513 Make compression settings per chunk * #6529 Remove reindex_relation from recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6545 Remove restrictions for changing compression settings * #6566 Limit tuple decompression during DML operations * #6579 Change compress_chunk and decompress_chunk to idempotent version by default * #6608 Add LWLock for OSM usage in loader * #6609 Deprecate recompress_chunk * #6609 Add optional recompress argument to compress_chunk **Bugfixes** * #6541 Inefficient join plans on compressed hypertables. * #6491 Enable now() plantime constification with BETWEEN * #6494 Fix create_hypertable referenced by fk succeeds * #6498 Suboptimal query plans when using time_bucket with query parameters * #6507 time_bucket_gapfill with timezones doesn't handle daylight savings * #6509 Make extension state available through function * #6512 Log extension state changes * #6522 Disallow triggers on CAggs * #6523 Reduce locking level on compressed chunk index during segmentwise recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6571 Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code * #6575 Fix compressed chunk not found during upserts * #6592 Fix recompression policy ignoring partially compressed chunks * #6610 Ensure qsort comparison function is transitive **Thanks** * @coney21 and @GStechschulte for reporting the problem with inefficient join plans on compressed hypertables. * @HollowMan6 for reporting triggers not working on materialized views of CAggs * @jbx1 for reporting suboptimal query plans when using time_bucket with query parameters * @JerkoNikolic for reporting the issue with gapfill and DST * @pdipesh02 for working on removing the old Continuous Aggregate format * @raymalt and @martinhale for reporting very slow query plans on realtime CAggs queries

@coney21

This release contains performance improvements and bug fixes since the 2.13.1 release. We recommend that you upgrade at the next available opportunity. In addition, it includes these noteworthy features: * Ability to change compression settings on existing compressed hypertables at any time. New compression settings take effect on any new chunks that are compressed after the change. * Reduced locking requirements during chunk recompression * Limiting tuple decompression during DML operations to avoid decompressing a lot of tuples and causing storage issues (100k limit, configurable) * Helper functions for determining compression settings **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Multi-node support removal announcement** Following the deprecation announcement for Multi-node in TimescaleDB 2.13, Multi-node is no longer supported starting with TimescaleDB 2.14. TimescaleDB 2.13 is the last version that includes multi-node support. Learn more about it [here](docs/MultiNodeDeprecation.md). If you want to migrate from multi-node TimescaleDB to single-node TimescaleDB, read the [migration documentation](https://docs.timescale.com/migrate/latest/multi-node-to-timescale-service/). **Deprecation notice: recompress_chunk procedure** TimescaleDB 2.14 is the last version that will include the recompress_chunk procedure. Its functionality will be replaced by the compress_chunk function, which, starting on TimescaleDB 2.14, works on both uncompressed and partially compressed chunks. The compress_chunk function should be used going forward to fully compress all types of chunks or even recompress old fully compressed chunks using new compression settings (through the newly introduced recompress optional parameter). **Features** * timescale#6325 Add plan-time chunk exclusion for real-time CAggs * timescale#6360 Remove support for creating Continuous Aggregates with old format * timescale#6386 Add functions for determining compression defaults * timescale#6410 Remove multinode public API * timescale#6440 Allow SQLValueFunction pushdown into compressed scan * timescale#6463 Support approximate hypertable size * timescale#6513 Make compression settings per chunk * timescale#6529 Remove reindex_relation from recompression * timescale#6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * timescale#6545 Remove restrictions for changing compression settings * timescale#6566 Limit tuple decompression during DML operations * timescale#6579 Change compress_chunk and decompress_chunk to idempotent version by default * timescale#6608 Add LWLock for OSM usage in loader * timescale#6609 Deprecate recompress_chunk * timescale#6609 Add optional recompress argument to compress_chunk **Bugfixes** * timescale#6541 Inefficient join plans on compressed hypertables. * timescale#6491 Enable now() plantime constification with BETWEEN * timescale#6494 Fix create_hypertable referenced by fk succeeds * timescale#6498 Suboptimal query plans when using time_bucket with query parameters * timescale#6507 time_bucket_gapfill with timezones doesn't handle daylight savings * timescale#6509 Make extension state available through function * timescale#6512 Log extension state changes * timescale#6522 Disallow triggers on CAggs * timescale#6523 Reduce locking level on compressed chunk index during segmentwise recompression * timescale#6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * timescale#6571 Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code * timescale#6575 Fix compressed chunk not found during upserts * timescale#6592 Fix recompression policy ignoring partially compressed chunks * timescale#6610 Ensure qsort comparison function is transitive **Thanks** * @coney21 and @GStechschulte for reporting the problem with inefficient join plans on compressed hypertables. * @HollowMan6 for reporting triggers not working on materialized views of CAggs * @jbx1 for reporting suboptimal query plans when using time_bucket with query parameters * @JerkoNikolic for reporting the issue with gapfill and DST * @pdipesh02 for working on removing the old Continuous Aggregate format * @raymalt and @martinhale for reporting very slow query plans on realtime CAggs queries

@coney21

This release contains performance improvements and bug fixes since the 2.13.1 release. We recommend that you upgrade at the next available opportunity. In addition, it includes these noteworthy features: * Ability to change compression settings on existing compressed hypertables at any time. New compression settings take effect on any new chunks that are compressed after the change. * Reduced locking requirements during chunk recompression * Limiting tuple decompression during DML operations to avoid decompressing a lot of tuples and causing storage issues (100k limit, configurable) * Helper functions for determining compression settings **For this release only**, you will need to restart the database before running `ALTER EXTENSION` **Multi-node support removal announcement** Following the deprecation announcement for Multi-node in TimescaleDB 2.13, Multi-node is no longer supported starting with TimescaleDB 2.14. TimescaleDB 2.13 is the last version that includes multi-node support. Learn more about it [here](docs/MultiNodeDeprecation.md). If you want to migrate from multi-node TimescaleDB to single-node TimescaleDB, read the [migration documentation](https://docs.timescale.com/migrate/latest/multi-node-to-timescale-service/). **Deprecation notice: recompress_chunk procedure** TimescaleDB 2.14 is the last version that will include the recompress_chunk procedure. Its functionality will be replaced by the compress_chunk function, which, starting on TimescaleDB 2.14, works on both uncompressed and partially compressed chunks. The compress_chunk function should be used going forward to fully compress all types of chunks or even recompress old fully compressed chunks using new compression settings (through the newly introduced recompress optional parameter). **Features** * #6325 Add plan-time chunk exclusion for real-time CAggs * #6360 Remove support for creating Continuous Aggregates with old format * #6386 Add functions for determining compression defaults * #6410 Remove multinode public API * #6440 Allow SQLValueFunction pushdown into compressed scan * #6463 Support approximate hypertable size * #6513 Make compression settings per chunk * #6529 Remove reindex_relation from recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6545 Remove restrictions for changing compression settings * #6566 Limit tuple decompression during DML operations * #6579 Change compress_chunk and decompress_chunk to idempotent version by default * #6608 Add LWLock for OSM usage in loader * #6609 Deprecate recompress_chunk * #6609 Add optional recompress argument to compress_chunk **Bugfixes** * #6541 Inefficient join plans on compressed hypertables. * #6491 Enable now() plantime constification with BETWEEN * #6494 Fix create_hypertable referenced by fk succeeds * #6498 Suboptimal query plans when using time_bucket with query parameters * #6507 time_bucket_gapfill with timezones doesn't handle daylight savings * #6509 Make extension state available through function * #6512 Log extension state changes * #6522 Disallow triggers on CAggs * #6523 Reduce locking level on compressed chunk index during segmentwise recompression * #6531 Fix if_not_exists behavior for CAgg policy with NULL offsets * #6571 Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code * #6575 Fix compressed chunk not found during upserts * #6592 Fix recompression policy ignoring partially compressed chunks * #6610 Ensure qsort comparison function is transitive **Thanks** * @coney21 and @GStechschulte for reporting the problem with inefficient join plans on compressed hypertables. * @HollowMan6 for reporting triggers not working on materialized views of CAggs * @jbx1 for reporting suboptimal query plans when using time_bucket with query parameters * @JerkoNikolic for reporting the issue with gapfill and DST * @pdipesh02 for working on removing the old Continuous Aggregate format * @raymalt and @martinhale for reporting very slow query plans on realtime CAggs queries

github-actions bot assigned akuzm Jan 18, 2024

akuzm marked this pull request as ready for review January 18, 2024 14:44

github-actions bot requested review from antekresic and konskov January 18, 2024 14:44

akuzm added this to the TimescaleDB 2.14 milestone Jan 18, 2024

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jnidzwetzki approved these changes Jan 22, 2024

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akuzm force-pushed the segmentby-em branch from ce3f4ef to 9ca2503 Compare January 23, 2024 09:01

akuzm enabled auto-merge (rebase) January 23, 2024 09:17

akuzm merged commit d701895 into timescale:main Jan 23, 2024
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akuzm deleted the segmentby-em branch January 23, 2024 09:18

timescale-automation added the auto-backport-not-done Automated backport of this PR has failed non-retriably (e.g. conflicts) label Jan 23, 2024

antekresic mentioned this pull request Feb 7, 2024

Release 2.14.0 #6613

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Fix joins with compressed chunks #6541

Fix joins with compressed chunks #6541

akuzm commented Jan 18, 2024 •

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timescale-automation commented Jan 23, 2024

Fix joins with compressed chunks #6541

Fix joins with compressed chunks #6541

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