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Make extension state available through function #6509

Merged
merged 1 commit into from
Jan 11, 2024
Merged

Make extension state available through function #6509

merged 1 commit into from
Jan 11, 2024

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mkindahl
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The extension state is not easily accessible in release builds, which makes debugging issue with the loader very difficult. This commit introduces a new schema timescaledb_debug and makes the function ts_extension_get_state available also in release builds as timescaledb_debug.extension_state.

See #1682

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All modified and coverable lines are covered by tests ✅

Comparison is base (e80728c) 87.36% compared to head (f92b1c1) 87.36%.

Additional details and impacted files 
@@           Coverage Diff           @@
##             main    #6509   +/-   ##
=======================================
  Coverage   87.36%   87.36%           
=======================================
  Files         187      187           
  Lines       41906    41860   -46     
  Branches     9335     9315   -20     
=======================================
- Hits        36612    36572   -40     
+ Misses       3623     3610   -13     
- Partials     1671     1678    +7

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@mkindahl mkindahl force-pushed the debug-extension-state branch 3 times, most recently from 2690c10 to d4b95d5 Compare January 10, 2024 12:31
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We might want to switch to using this function also for prove checks, but I didn't add that change to this pull request.

@mkindahl mkindahl force-pushed the debug-extension-state branch from d4b95d5 to f1c3a8a Compare January 10, 2024 12:36
@mkindahl mkindahl marked this pull request as ready for review January 10, 2024 13:14
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@konskov, @jnidzwetzki: please review this pull request.

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mkindahl
mkindahl commented Jan 10, 2024
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@mkindahl mkindahl force-pushed the debug-extension-state branch 3 times, most recently from d70adba to 8bce74c Compare January 10, 2024 15:40
konskov
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@mkindahl mkindahl force-pushed the debug-extension-state branch from b0a3038 to d7cee76 Compare January 11, 2024 08:40
@mkindahl
Make extension state available through function
f92b1c1 
The extension state is not easily accessible in release builds, which
makes debugging issue with the loader very difficult. This commit
introduces a new schema `_timescaledb_debug` and makes the function
`ts_extension_get_state` available also in release builds as
`_timescaledb_debug.extension_state`.

See timescale#1682
@mkindahl mkindahl force-pushed the debug-extension-state branch from d7cee76 to f92b1c1 Compare January 11, 2024 09:00
@mkindahl mkindahl enabled auto-merge (rebase) January 11, 2024 09:00
@mkindahl mkindahl merged commit 662fcc1 into timescale:main Jan 11, 2024
43 checks passed
@mkindahl mkindahl deleted the debug-extension-state branch January 11, 2024 09:57
antekresic added a commit that referenced this pull request Feb 7, 2024
@antekresic
Release 2.14.0
443c88f 
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
@antekresic antekresic mentioned this pull request Feb 7, 2024
Merged
antekresic added a commit that referenced this pull request Feb 8, 2024
@antekresic
Release 2.14.0
013b373 
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
antekresic added a commit that referenced this pull request Feb 8, 2024
@antekresic
Release 2.14.0
e0822c6 
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
antekresic added a commit that referenced this pull request Feb 8, 2024
@antekresic
Release 2.14.0
505b427 
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
antekresic added a commit that referenced this pull request Feb 8, 2024
@antekresic
Release 2.14.0
9c10832 
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
antekresic added a commit that referenced this pull request Feb 8, 2024
@antekresic
Release 2.14.0
8200434 
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
antekresic added a commit to antekresic/timescaledb that referenced this pull request Feb 8, 2024
@antekresic
Release 2.14.0
7c8fc7a 
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
antekresic added a commit that referenced this pull request Feb 8, 2024
@antekresic
Release 2.14.0
5ede370 
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
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@konskov konskov konskov approved these changes

@jnidzwetzki jnidzwetzki jnidzwetzki approved these changes

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@mkindahl @jnidzwetzki @konskov