This release contains bug fixes since the 2.14.1 release.
We recommend that you upgrade at the next available opportunity.
**Bugfixes**
* #6655 Fix segfault in cagg_validate_query
* #6660 Fix refresh on empty CAgg with variable bucket
* #6670 Don't try to compress osm chunks
**Thanks**
* @kav23alex for reporting a segfault in cagg_validate_query
This release contains bug fixes since the 2.14.0 release.
We recommend that you upgrade at the next available opportunity.
**Features**
* #6630 Add views for per chunk compression settings
**Bugfixes**
* #6636 Fixes extension update of compressed hypertables with dropped columns
* #6637 Reset sequence numbers on non-rollup compression
* #6639 Disable default indexscan for compression
* #6651 Fix DecompressChunk path generation with per chunk settings
**Thanks**
* @anajavi for reporting an issue with extension update of compressed hypertables
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
This release contains bug fixes since the 2.13.0 release.
We recommend that you upgrade at the next available opportunity.
**Bugfixes**
* #6365 Use numrows_pre_compression in approximate row count
* #6377 Use processed group clauses in PG16
* #6384 Change bgw_log_level to use PGC_SUSET
* #6393 Disable vectorized sum for expressions.
* #6408 Fix groupby pathkeys for gapfill in PG16
* #6428 Fix index matching during DML decompression
* #6439 Fix compressed chunk permission handling on PG16
* #6443 Fix lost concurrent CAgg updates
* #6454 Fix unique expression indexes on compressed chunks
* #6465 Fix use of freed path in decompression sort logic
**Thanks**
* @MA-MacDonald for reporting an issue with gapfill in PG16
* @aarondglover for reporting an issue with unique expression indexes on compressed chunks
* @adriangb for reporting an issue with security barrier views on pg16
This release contains performance improvements, an improved hypertable DDL API
and bug fixes since the 2.12.2 release. We recommend that you upgrade at the next
available opportunity.
In addition, it includes these noteworthy features:
* Full PostgreSQL 16 support for all existing features
* Vectorized aggregation execution for sum()
* Track chunk creation time used in retention/compression policies
**Deprecation notice: Multi-node support**
TimescaleDB 2.13 is the last version that will include multi-node support. Multi-node
support in 2.13 is available for PostgreSQL 13, 14 and 15. 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/).
**PostgreSQL 13 deprecation announcement**
We will continue supporting PostgreSQL 13 until April 2024. Sooner to that time, we will
announce the specific version of TimescaleDB in which PostgreSQL 13 support will not be
included going forward.
**Starting from TimescaleDB 2.13.0**
* No Amazon Machine Images (AMI) are published. If you previously used AMI, please
use another [installation method](https://docs.timescale.com/self-hosted/latest/install/)
* Continuous Aggregates are materialized only (non-realtime) by default
**Features**
* #5575 Add chunk-wise sorted paths for compressed chunks
* #5761 Simplify hypertable DDL API
* #5890 Reduce WAL activity by freezing compressed tuples immediately
* #6050 Vectorized aggregation execution for sum()
* #6062 Add metadata for chunk creation time
* #6077 Make Continous Aggregates materialized only (non-realtime) by default
* #6177 Change show_chunks/drop_chunks using chunk creation time
* #6178 Show batches/tuples decompressed during DML operations in EXPLAIN output
* #6185 Keep track of catalog version
* #6227 Use creation time in retention/compression policy
* #6307 Add SQL function cagg_validate_query
**Bugfixes**
* #6188 Add GUC for setting background worker log level
* #6222 Allow enabling compression on hypertable with unique expression index
* #6240 Check if worker registration succeeded
* #6254 Fix exception detail passing in compression_policy_execute
* #6264 Fix missing bms_del_member result assignment
* #6275 Fix negative bitmapset member not allowed in compression
* #6280 Potential data loss when compressing a table with a partial index that matches compression order.
* #6289 Add support for startup chunk exclusion with aggs
* #6290 Repair relacl on upgrade
* #6297 Fix segfault when creating a cagg using a NULL width in time bucket function
* #6305 Make timescaledb_functions.makeaclitem strict
* #6332 Fix typmod and collation for segmentby columns
* #6339 Fix tablespace with constraints
* #6343 Enable segmentwise recompression in compression policy
**Thanks**
* @fetchezar for reporting an issue with compression policy error messages
* @jflambert for reporting the background worker log level issue
* @torazem for reporting an issue with compression and large oids
* @fetchezar for reporting an issue in the compression policy
* @lyp-bobi for reporting an issue with tablespace with constraints
* @pdipesh02 for contributing to the implementation of the metadata for chunk creation time,
the generalized hypertable API, and show_chunks/drop_chunks using chunk creation time
* @lkshminarayanan for all his work on PG16 support
This release contains bug fixes since the 2.12.1 release.
We recommend that you upgrade at the next available opportunity.
**Bugfixes**
* #6155 Align gapfill bucket generation with time_bucket
* #6181 Ensure fixed_schedule field is populated
* #6210 Fix EXPLAIN ANALYZE for compressed DML
This patch stores the current catalog version in an internal
table to allow us to verify catalog and code version match.
When doing dump/restore people occasionally report very unusual
errors and during investigation it is discovered that they loaded
a dump from an older version and run it with a later code version.
This allows to detect mismatches between installed code version
and loaded dump version. The version number in the metadata table
will be kept updated in upgrade and downgrade scripts.
This release contains bug fixes since the 2.12.0 release.
We recommend that you upgrade at the next available opportunity.
**Bugfixes**
* #6113 Fix planner distributed table count
* #6117 Avoid decompressing batches using an empty slot
* #6123 Fix concurrency errors in OSM API
* #6142 Do not throw an error when deprecation GUC cannot be read
**Thanks**
* @symbx for reporting a crash when selecting from empty hypertables
This release contains performance improvements for compressed hypertables
and continuous aggregates and bug fixes since the 2.11.2 release.
We recommend that you upgrade at the next available opportunity.
This release moves all internal functions from the _timescaleb_internal
schema into the _timescaledb_functions schema. This separates code from
internal data objects and improves security by allowing more restrictive
permissions for the code schema. If you are calling any of those internal
functions you should adjust your code as soon as possible. This version
also includes a compatibility layer that allows calling them in the old
location but that layer will be removed in 2.14.0.
**PostgreSQL 12 support removal announcement**
Following the deprecation announcement for PostgreSQL 12 in TimescaleDB 2.10,
PostgreSQL 12 is not supported starting with TimescaleDB 2.12.
Currently supported PostgreSQL major versions are 13, 14 and 15.
PostgreSQL 16 support will be added with a following TimescaleDB release.
**Features**
* #5137 Insert into index during chunk compression
* #5150 MERGE support on hypertables
* #5515 Make hypertables support replica identity
* #5586 Index scan support during UPDATE/DELETE on compressed hypertables
* #5596 Support for partial aggregations at chunk level
* #5599 Enable ChunkAppend for partially compressed chunks
* #5655 Improve the number of parallel workers for decompression
* #5758 Enable altering job schedule type through `alter_job`
* #5805 Make logrepl markers for (partial) decompressions
* #5809 Relax invalidation threshold table-level lock to row-level when refreshing a Continuous Aggregate
* #5839 Support CAgg names in chunk_detailed_size
* #5852 Make set_chunk_time_interval CAggs aware
* #5868 Allow ALTER TABLE ... REPLICA IDENTITY (FULL|INDEX) on materialized hypertables (continuous aggregates)
* #5875 Add job exit status and runtime to log
* #5909 CREATE INDEX ONLY ON hypertable creates index on chunks
**Bugfixes**
* #5860 Fix interval calculation for hierarchical CAggs
* #5894 Check unique indexes when enabling compression
* #5951 _timescaledb_internal.create_compressed_chunk doesn't account for existing uncompressed rows
* #5988 Move functions to _timescaledb_functions schema
* #5788 Chunk_create must add an existing table or fail
* #5872 Fix duplicates on partially compressed chunk reads
* #5918 Fix crash in COPY from program returning error
* #5990 Place data in first/last function in correct mctx
* #5991 Call eq_func correctly in time_bucket_gapfill
* #6015 Correct row count in EXPLAIN ANALYZE INSERT .. ON CONFLICT output
* #6035 Fix server crash on UPDATE of compressed chunk
* #6044 Fix server crash when using duplicate segmentby column
* #6045 Fix segfault in set_integer_now_func
* #6053 Fix approximate_row_count for CAggs
* #6081 Improve compressed DML datatype handling
* #6084 Propagate parameter changes to decompress child nodes
**Thanks**
* @ajcanterbury for reporting a problem with lateral joins on compressed chunks
* @alexanderlaw for reporting multiple server crashes
* @lukaskirner for reporting a bug with monthly continuous aggregates
* @mrksngl for reporting a bug with unusual user names
* @willsbit for reporting a crash in time_bucket_gapfill
This release contains bug fixes since the 2.11.1 release.
We recommend that you upgrade at the next available opportunity.
**Features**
* #5923 Feature flags for TimescaleDB features
**Bugfixes**
* #5680 Fix DISTINCT query with JOIN on multiple segmentby columns
* #5774 Fixed two bugs in decompression sorted merge code
* #5786 Ensure pg_config --cppflags are passed
* #5906 Fix quoting owners in sql scripts.
* #5912 Fix crash in 1-step integer policy creation
**Thanks**
* @mrksngl for submitting a PR to fix extension upgrade scripts
* @ericdevries for reporting an issue with DISTINCT queries using
segmentby columns of compressed hypertable
This release contains bug fixes since the 2.11.0 release. We recommend
that you upgrade at the next available opportunity.
**Features**
* #5679 Teach loader to load OSM extension
**Bugfixes**
* #5705 Scheduler accidentally getting killed when calling `delete_job`
* #5742 Fix Result node handling with ConstraintAwareAppend on
compressed chunks
* #5750 Ensure tlist is present in decompress chunk plan
* #5754 Fixed handling of NULL values in bookend_sfunc
* #5798 Fixed batch look ahead in compressed sorted merge
* #5804 Mark cagg_watermark function as PARALLEL RESTRICTED
* #5807 Copy job config JSONB structure into current MemoryContext
* #5824 Improve continuous aggregate query chunk exclusion
**Thanks**
* @JamieD9 for reporting an issue with a wrong result ordering
* @xvaara for reporting an issue with Result node handling in
ConstraintAwareAppend
This release contains bug fixes since the 2.10.0 release.
We recommend that you upgrade at the next available opportunity.
**Bugfixes**
* #5159 Support Continuous Aggregates names in hypertable_(detailed_)size
* #5226 Fix concurrent locking with chunk_data_node table
* #5317 Fix some incorrect memory handling
* #5336 Use NameData and namestrcpy for names
* #5343 Set PortalContext when starting job
* #5360 Fix uninitialized bucket_info variable
* #5362 Make copy fetcher more async
* #5364 Fix num_chunks inconsistency in hypertables view
* #5367 Fix column name handling in old-style continuous aggregates
* #5378 Fix multinode DML HA performance regression
* #5384 Fix Hierarchical Continuous Aggregates chunk_interval_size
**Thanks**
* @justinozavala for reporting an issue with PL/Python procedures in the background worker
* @Medvecrab for discovering an issue with copying NameData when forming heap tuples.
* @pushpeepkmonroe for discovering an issue in upgrading old-style
continuous aggregates with renamed columns
* @pushpeepkmonroe for discovering an issue in upgrading old-style continuous aggregates with renamed columns
This release contains new features and bug fixes since the 2.9.3
release.
This release is high priority for upgrade. We strongly recommend that
you upgrade as soon as possible.
**Features**
* #5241 Allow RETURNING clause when inserting into compressed chunks
* #5245 Manage life-cycle of connections via memory contexts
* #5246 Make connection establishment interruptible
* #5253 Make data node command execution interruptible
* #5243 Enable real-time aggregation for continuous aggregates with
joins
* #5262 Extend enabling compression on a continuous aggregrate with
'compress_segmentby' and 'compress_orderby' parameters
**Bugfixes**
* #4926 Fix corruption when inserting into compressed chunks
* #5218 Add role-level security to job error log
* #5214 Fix use of prepared statement in async module
* #5290 Compression can't be enabled on continuous aggregates when
segmentby/orderby columns need quotation
* #5239 Fix next_start calculation for fixed schedules
This release contains bug fixes since the 2.9.2 release.
This release is high priority for upgrade. We strongly recommend that you
upgrade as soon as possible.
**Bugfixes**
* #4804 Skip bucketing when start or end of refresh job is null
* #5108 Fix column ordering in compressed table index not following the order of a multi-column segment by definition
* #5187 Don't enable clang-tidy by default
* #5255 Fix year not being considered as a multiple of day/month in hierarchical continuous aggregates
* #5259 Lock down search_path in SPI calls
This release contains bug fixes since the 2.9.1 release.
We recommend that you upgrade at the next available opportunity.
**Bugfixes**
* #5114 Fix issue with deleting data node and dropping the database on multi-node
* #5133 Fix creating a CAgg on a CAgg where the time column is in a different order of the original hypertable
* #5152 Fix adding column with NULL constraint to compressed hypertable
* #5170 Fix CAgg on CAgg variable bucket size validation
* #5180 Fix default data node availability status on multi-node
* #5181 Fix ChunkAppend and ConstraintAwareAppend with TidRangeScan child subplan
* #5193 Fix repartition behavior when attaching data node on multi-node
This release contains bug fixes since the 2.9.0 release.
This release is high priority for upgrade. We strongly recommend that you
upgrade as soon as possible.
**Bugfixes**
* #5072 Fix CAgg on CAgg bucket size validation
* #5101 Fix enabling compression on caggs with renamed columns
* #5106 Fix building against PG15 on Windows
* #5117 Fix postgres server restart on background worker exit
* #5121 Fix privileges for job_errors in update script
Add 2.9.0 to update test scripts and adjust downgrade scripts for
2.9.0. Additionally adjust CHANGELOG to sync with the actual release
CHANGELOG and add PG15 to CI.
This release adds major new features since the 2.8.1 release.
We deem it moderate priority for upgrading.
This release includes these noteworthy features:
* Hierarchical Continuous Aggregates (aka Continuous Aggregate on top of another Continuous Aggregate)
* Improve `time_bucket_gapfill` function allowing specifying timezone to bucket
* Use `alter_data_node()` to change the data node configuration. This function introduces the option to configure the availability of the data node.
This release also includes several bug fixes.
**Features**
* #4476 Batch rows on access node for distributed COPY
* #4567 Exponentially backoff when out of background workers
* #4650 Show warnings when not following best practices
* #4664 Introduce fixed schedules for background jobs
* #4668 Hierarchical Continuous Aggregates
* #4670 Add timezone support to time_bucket_gapfill
* #4678 Add interface for troubleshooting job failures
* #4718 Add ability to merge chunks while compressing
* #4786 Extend the now() optimization to also apply to CURRENT_TIMESTAMP
* #4820 Support parameterized data node scans in joins
* #4830 Add function to change configuration of a data nodes
* #4966 Handle DML activity when datanode is not available
* #4971 Add function to drop stale chunks on a datanode
**Bugfixes**
* #4663 Don't error when compression metadata is missing
* #4673 Fix now() constification for VIEWs
* #4681 Fix compression_chunk_size primary key
* #4696 Report warning when enabling compression on hypertable
* #4745 Fix FK constraint violation error while insert into hypertable which references partitioned table
* #4756 Improve compression job IO performance
* #4770 Continue compressing other chunks after an error
* #4794 Fix degraded performance seen on timescaledb_internal.hypertable_local_size() function
* #4807 Fix segmentation fault during INSERT into compressed hypertable
* #4822 Fix missing segmentby compression option in CAGGs
* #4823 Fix a crash that could occur when using nested user-defined functions with hypertables
* #4840 Fix performance regressions in the copy code
* #4860 Block multi-statement DDL command in one query
* #4898 Fix cagg migration failure when trying to resume
* #4904 Remove BitmapScan support in DecompressChunk
* #4906 Fix a performance regression in the query planner by speeding up frozen chunk state checks
* #4910 Fix a typo in process_compressed_data_out
* #4918 Cagg migration orphans cagg policy
* #4941 Restrict usage of the old format (pre 2.7) of continuous aggregates in PostgreSQL 15.
* #4955 Fix cagg migration for hypertables using timestamp without timezone
* #4968 Check for interrupts in gapfill main loop
* #4988 Fix cagg migration crash when refreshing the newly created cagg
**Thanks**
* @jflambert for reporting a crash with nested user-defined functions.
* @jvanns for reporting hypertable FK reference to vanilla PostgreSQL partitioned table doesn't seem to work
* @kou for fixing a typo in process_compressed_data_out
* @xvaara for helping reproduce a bug with bitmap scans in transparent decompression
* @byazici for reporting a problem with segmentby on compressed caggs
* @tobiasdirksen for requesting Continuous aggregate on top of another continuous aggregate
* @xima for reporting a bug in Cagg migration
This release is a patch release. We recommend that you upgrade at the
next available opportunity.
**Bugfixes**
* #4454 Keep locks after reading job status
* #4658 Fix error when querying a compressed hypertable with compress_segmentby on an enum column
* #4671 Fix a possible error while flushing the COPY data
* #4675 Fix bad TupleTableSlot drop
* #4676 Fix a deadlock when decompressing chunks and performing SELECTs
* #4685 Fix chunk exclusion for space partitions in SELECT FOR UPDATE queries
* #4694 Change parameter names of cagg_migrate procedure
* #4698 Do not use row-by-row fetcher for parameterized plans
* #4711 Remove support for procedures as custom checks
* #4712 Fix assertion failure in constify_now
* #4713 Fix Continuous Aggregate migration policies
* #4720 Fix chunk exclusion for prepared statements and dst changes
* #4726 Fix gapfill function signature
* #4737 Fix join on time column of compressed chunk
* #4738 Fix error when waiting for remote COPY to finish
* #4739 Fix continuous aggregate migrate check constraint
* #4760 Fix segfault when INNER JOINing hypertables
* #4767 Fix permission issues on index creation for CAggs
**Thanks**
* @boxhock and @cocowalla for reporting a segfault when JOINing hypertables
* @carobme for reporting constraint error during continuous aggregate migration
* @choisnetm, @dustinsorensen, @jayadevanm and @joeyberkovitz for reporting a problem with JOINs on compressed hypertables
* @daniel-k for reporting a background worker crash
* @justinpryzby for reporting an error when compressing very wide tables
* @maxtwardowski for reporting problems with chunk exclusion and space partitions
* @yuezhihan for reporting GROUP BY error when having compress_segmentby on an enum column
Calling `ts_dist_cmd_invoke_on_data_nodes_using_search_path()` function
without an active transaction allows connection invalidation event
happen between applying `search_path` and the actual command
execution, which leads to an error.
This change introduces a way to ignore connection cache invalidations
using `remote_connection_cache_invalidation_ignore()` function.
This work is based on @nikkhils original fix and the problem research.
Fix#4022
This release adds major new features since the 2.7.2 release.
We deem it moderate priority for upgrading.
This release includes these noteworthy features:
* time_bucket now supports bucketing by month, year and timezone
* Improve performance of bulk SELECT and COPY for distributed hypertables
* 1 step CAgg policy management
* Migrate Continuous Aggregates to the new format
**Features**
* #4188 Use COPY protocol in row-by-row fetcher
* #4307 Mark partialize_agg as parallel safe
* #4380 Enable chunk exclusion for space dimensions in UPDATE/DELETE
* #4384 Add schedule_interval to policies
* #4390 Faster lookup of chunks by point
* #4393 Support intervals with day component when constifying now()
* #4397 Support intervals with month component when constifying now()
* #4405 Support ON CONFLICT ON CONSTRAINT for hypertables
* #4412 Add telemetry about replication
* #4415 Drop remote data when detaching data node
* #4416 Handle TRUNCATE TABLE on chunks
* #4425 Add parameter check_config to alter_job
* #4430 Create index on Continuous Aggregates
* #4439 Allow ORDER BY on continuous aggregates
* #4443 Add stateful partition mappings
* #4484 Use non-blocking data node connections for COPY
* #4495 Support add_dimension() with existing data
* #4502 Add chunks to baserel cache on chunk exclusion
* #4545 Add hypertable distributed argument and defaults
* #4552 Migrate Continuous Aggregates to the new format
* #4556 Add runtime exclusion for hypertables
* #4561 Change get_git_commit to return full commit hash
* #4563 1 step CAgg policy management
* #4641 Allow bucketing by month, year, century in time_bucket and time_bucket_gapfill
* #4642 Add timezone support to time_bucket
**Bugfixes**
* #4359 Create composite index on segmentby columns
* #4374 Remove constified now() constraints from plan
* #4416 Handle TRUNCATE TABLE on chunks
* #4478 Synchronize chunk cache sizes
* #4486 Adding boolean column with default value doesn't work on compressed table
* #4512 Fix unaligned pointer access
* #4519 Throw better error message on incompatible row fetcher settings
* #4549 Fix dump_meta_data for windows
* #4553 Fix timescaledb_post_restore GUC handling
* #4573 Load TSL library on compressed_data_out call
* #4575 Fix use of `get_partition_hash` and `get_partition_for_key` inside an IMMUTABLE function
* #4577 Fix segfaults in compression code with corrupt data
* #4580 Handle default privileges on CAggs properly
* #4582 Fix assertion in GRANT .. ON ALL TABLES IN SCHEMA
* #4583 Fix partitioning functions
* #4589 Fix rename for distributed hypertable
* #4601 Reset compression sequence when group resets
* #4611 Fix a potential OOM when loading large data sets into a hypertable
* #4624 Fix heap buffer overflow
* #4627 Fix telemetry initialization
* #4631 Ensure TSL library is loaded on database upgrades
* #4646 Fix time_bucket_ng origin handling
* #4647 Fix the error "SubPlan found with no parent plan" that occurred if using joins in RETURNING clause.
**Thanks**
* @AlmiS for reporting error on `get_partition_hash` executed inside an IMMUTABLE function
* @Creatation for reporting an issue with renaming hypertables
* @janko for reporting an issue when adding bool column with default value to compressed hypertable
* @jayadevanm for reporting error of TRUNCATE TABLE on compressed chunk
* @michaelkitson for reporting permission errors using default privileges on Continuous Aggregates
* @mwahlhuetter for reporting error in joins in RETURNING clause
* @ninjaltd and @mrksngl for reporting a potential OOM when loading large data sets into a hypertable
* @PBudmark for reporting an issue with dump_meta_data.sql on Windows
* @ssmoss for reporting an issue with time_bucket_ng origin handling
This release is a patch release. We recommend that you upgrade at the
next available opportunity.
Among other things this release fixes several memory leaks, handling
of TOASTed values in GapFill and parameter handling in prepared statements.
**Bugfixes**
* #4517 Fix prepared statement param handling in ChunkAppend
* #4522 Fix ANALYZE on dist hypertable for a set of nodes
* #4526 Fix gapfill group comparison for TOASTed values
* #4527 Handle stats properly for range types
* #4532 Fix memory leak in function telemetry
* #4534 Use explicit memory context with hash_create
* #4538 Fix chunk creation on hypertables with non-default statistics
**Thanks**
* @3a6u9ka, @bgemmill, @hongquan, @stl-leonid-kalmaev and @victor-sudakov for reporting a memory leak
* @hleung2021 and @laocaixw for reporting an issue with parameter handling in prepared statements
This release adds major new features since the 2.6.1 release.
We deem it moderate priority for upgrading.
This release includes these noteworthy features:
* Optimize continuous aggregate query performance and storage
* The following query clauses and functions can now be used in a continuous
aggregate: FILTER, DISTINCT, ORDER BY as well as [Ordered-Set Aggregate](https://www.postgresql.org/docs/current/functions-aggregate.html#FUNCTIONS-ORDEREDSET-TABLE)
and [Hypothetical-Set Aggregate](https://www.postgresql.org/docs/current/functions-aggregate.html#FUNCTIONS-HYPOTHETICAL-TABLE)
* Optimize now() query planning time
* Improve COPY insert performance
* Improve performance of UPDATE/DELETE on PG14 by excluding chunks
This release also includes several bug fixes.
If you are upgrading from a previous version and were using compression
with a non-default collation on a segmentby-column you should recompress
those hypertables.
**Features**
* #4045 Custom origin's support in CAGGs
* #4120 Add logging for retention policy
* #4158 Allow ANALYZE command on a data node directly
* #4169 Add support for chunk exclusion on DELETE to PG14
* #4209 Add support for chunk exclusion on UPDATE to PG14
* #4269 Continuous Aggregates finals form
* #4301 Add support for bulk inserts in COPY operator
* #4311 Support non-superuser move chunk operations
* #4330 Add GUC "bgw_launcher_poll_time"
* #4340 Enable now() usage in plan-time chunk exclusion
**Bugfixes**
* #3899 Fix segfault in Continuous Aggregates
* #4225 Fix TRUNCATE error as non-owner on hypertable
* #4236 Fix potential wrong order of results for compressed hypertable with a non-default collation
* #4249 Fix option "timescaledb.create_group_indexes"
* #4251 Fix INSERT into compressed chunks with dropped columns
* #4255 Fix option "timescaledb.create_group_indexes"
* #4259 Fix logic bug in extension update script
* #4269 Fix bad Continuous Aggregate view definition reported in #4233
* #4289 Support moving compressed chunks between data nodes
* #4300 Fix refresh window cap for cagg refresh policy
* #4315 Fix memory leak in scheduler
* #4323 Remove printouts from signal handlers
* #4342 Fix move chunk cleanup logic
* #4349 Fix crashes in functions using AlterTableInternal
* #4358 Fix crash and other issues in telemetry reporter
**Thanks**
* @abrownsword for reporting a bug in the telemetry reporter and testing the fix
* @jsoref for fixing various misspellings in code, comments and documentation
* @yalon for reporting an error with ALTER TABLE RENAME on distributed hypertables
* @zhuizhuhaomeng for reporting and fixing a memory leak in our scheduler
This release is patch release. We recommend that you upgrade at the next available opportunity.
**Bugfixes**
* #3974 Fix remote EXPLAIN with parameterized queries
* #4122 Fix segfault on INSERT into distributed hypertable
* #4142 Ignore invalid relid when deleting hypertable
* #4159 Fix ADD COLUMN IF NOT EXISTS error on compressed hypertable
* #4161 Fix memory handling during scans
* #4186 Fix owner change for distributed hypertable
* #4192 Abort sessions after extension reload
* #4193 Fix relcache callback handling causing crashes
**Thanks**
* @abrownsword for reporting a crash in the telemetry reporter
* @daydayup863 for reporting issue with remote explain
