Log message:
postgresql-timescaledb: updated to 2.14.0

2.14.0

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
Plan-time chunk exclusion for real-time Continuous Aggregate by constify the \ 
cagg_watermark function call, leading to faster queries using real-time \ 
continuous aggregates
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.

If you want to migrate from multi-node TimescaleDB to single-node TimescaleDB, \ 
read the
migration documentation.

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

* Add plan-time chunk exclusion for real-time CAggs
* Remove support for creating Continuous Aggregates with old format
* Add functions for determining compression defaults
* Remove multinode public API
* Allow SQLValueFunction pushdown into compressed scan
* Support approximate hypertable size
* Make compression settings per chunk
* Remove reindex_relation from recompression
* Fix if_not_exists behavior for CAgg policy with NULL offsets
* Remove restrictions for changing compression settings
* Limit tuple decompression during DML operations
* Change compress_chunk and decompress_chunk to idempotent version by default
* Add LWLock for OSM usage in loader
* Deprecate recompress_chunk
* Add optional recompress argument to compress_chunk

Bugfixes

* Inefficient join plans on compressed hypertables.
* Enable now() plantime constification with BETWEEN
* Fix create_hypertable referenced by fk succeeds
* Suboptimal query plans when using time_bucket with query parameters
* time_bucket_gapfill with timezones doesn't handle daylight savings
* Make extension state available through function
* Log extension state changes
* Disallow triggers on CAggs
* Reduce locking level on compressed chunk index during segmentwise recompression
* Fix if_not_exists behavior for CAgg policy with NULL offsets
* Fix pathtarget adjustment for MergeAppend paths in aggregation pushdown code
* Fix compressed chunk not found during upserts
* Fix recompression policy ignoring partially compressed chunks
* Ensure qsort comparison function is transitive

Log message:
postgresql-timescaledb: updated to 2.13.1

2.13.1 (2024-01-09)

This release contains bug fixes since the 2.13.0 release.
We recommend that you upgrade at the next available opportunity.

**Bugfixes**
* Use numrows_pre_compression in approximate row count
* Use processed group clauses in PG16
* Change bgw_log_level to use PGC_SUSET
* Disable vectorized sum for expressions.
* Read CAgg watermark from materialized data
* Fix groupby pathkeys for gapfill in PG16
* Fix index matching during DML decompression
* Fix compressed chunk permission handling on PG16
* Fix lost concurrent CAgg updates
* Fix unique expression indexes on compressed chunks
* 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

2.13.0 (2023-11-28)

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**
* Add chunk-wise sorted paths for compressed chunks
* Simplify hypertable DDL API
* Reduce WAL activity by freezing compressed tuples immediately
* Vectorized aggregation execution for sum()
* Add metadata for chunk creation time
* Make Continous Aggregates materialized only (non-realtime) by default
* Change show_chunks/drop_chunks using chunk creation time
* Show batches/tuples decompressed during DML operations in EXPLAIN output
* Keep track of catalog version
* Use creation time in retention/compression policy
* Add SQL function cagg_validate_query

**Bugfixes**
* Add GUC for setting background worker log level
* Allow enabling compression on hypertable with unique expression index
* Check if worker registration succeeded
* Fix exception detail passing in compression_policy_execute
* Fix missing bms_del_member result assignment
* Fix negative bitmapset member not allowed in compression
* Potential data loss when compressing a table with a partial index that matches \ 
compression order.
* Add support for startup chunk exclusion with aggs
* Repair relacl on upgrade
* Fix segfault when creating a cagg using a NULL width in time bucket function
* Make timescaledb_functions.makeaclitem strict
* Fix typmod and collation for segmentby columns
* Fix tablespace with constraints
* Enable segmentwise recompression in compression policy

Log message:
postgresql-timescaledb: updated to 2.12.2

2.12.2

This release contains bug fixes since the 2.12.1 release.
We recommend that you upgrade at the next available opportunity.

Bugfixes

* Align gapfill bucket generation with time_bucket
* Ensure fixed_schedule field is populated
* Fix EXPLAIN ANALYZE for compressed DML

2.12.1

This release contains bug fixes since the 2.12.0 release.
We recommend that you upgrade at the next available opportunity.

Bugfixes

* Fix planner distributed table count
* Avoid decompressing batches using an empty slot
* Fix concurrency errors in OSM API
* do not throw an error when deprecation GUC cannot be read

2.12.0

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

* Insert into index during chunk compression
* MERGE support on hypertables
* Make hypertables support replica identity
* Index scan support during UPDATE/DELETE on compressed hypertables
* Support for partial aggregations at chunk level
* Enable ChunkAppend for partially compressed chunks
* Improve the number of parallel workers for decompression
* Enable altering job schedule type through alter_job
* Make logrepl markers for (partial) decompressions
* Relax invalidation threshold table-level lock to row-level when refreshing a \ 
Continuous Aggregate
* Support CAgg names in chunk_detailed_size
* Make set_chunk_time_interval CAggs aware
* Allow ALTER TABLE ... REPLICA IDENTITY (FULL|INDEX) on materialized \ 
hypertables (continuous aggregates)
* Add job exit status and runtime to log
* CREATE INDEX ONLY ON hypertable creates index on chunks

Bugfixes

* Fix interval calculation for hierarchical CAggs
* Check unique indexes when enabling compression
* _timescaledb_internal.create_compressed_chunk doesn't account for existing \ 
uncompressed rows
* Move functions to _timescaledb_functions schema
* Chunk_create must add an existing table or fail
* Fix duplicates on partially compressed chunk reads
* Fix crash in COPY from program returning error
* Place data in first/last function in correct mctx
* Call eq_func correctly in time_bucket_gapfill
* Correct row count in EXPLAIN ANALYZE INSERT .. ON CONFLICT output
* Fix server crash on UPDATE of compressed chunk
* Fix server crash when using duplicate segmentby column
* Fix segfault in set_integer_now_func
* Fix approximate_row_count for CAggs
* Improve compressed DML datatype handling
* Propagate parameter changes to decompress child nodes
* Schedule compression policy more often

Log message:
postgresql-timescaledb: updated to 2.11.2

2.11.2

This release contains bug fixes since the 2.11.1 release.
We recommend that you upgrade at the next available opportunity.

Features
* Feature flags for TimescaleDB features

Bugfixes
* Fix DISTINCT query with JOIN on multiple segmentby columns
* Fixed two bugs in decompression sorted merge code
* Ensure pg_config --cppflags are passed
* Fix quoting owners in sql scripts.
* Fix crash in 1-step integer policy creation

Log message:
postgresql-timescaledb: updated to 2.11.1

2.11.1 (2023-06-29)

This release contains bug fixes since the 2.11.0 release.
We recommend that you upgrade at the next available opportunity.

**Features**
* Update the loader to add support for the OSM extension (used for data tiering \ 
on [Timescale](https://www.timescale.com/))

**Bugfixes**
* Scheduler accidentally getting killed when calling `delete_job`
* Fix Result node handling with ConstraintAwareAppend on compressed chunks
* Ensure tlist is present in decompress chunk plan
* Fixed handling of NULL values in bookend_sfunc
* Fixed batch look ahead in compressed sorted merge
* Mark cagg_watermark function as PARALLEL RESTRICTED
* Copy job config JSONB structure into current MemoryContext
* Improve continuous aggregate query chunk exclusion

2.11.0 (2023-05-12)

This release contains new features and bug fixes since the 2.10.3 release.
We deem it moderate priority for upgrading.

This release includes these noteworthy features:
* Support for DML operations on compressed chunks:
  * UPDATE/DELETE support
  * Support for unique constraints on compressed chunks
  * Support for `ON CONFLICT DO UPDATE`
  * Support for `ON CONFLICT DO NOTHING`
* Join support for Hierarchical Continuous Aggregates
* Performance improvements for real-time Hierarchical Continuous Aggregates

**Features**
* Allow pushdown of reference table joins
* Improve Realtime Continuous Aggregate performance
* Improve unique constraint support on compressed hypertables
* Support UPDATE/DELETE on compressed hypertables
* Enable JOINS for Hierarchical Continuous Aggregates
* Add parallel support for partialize_agg()
* Refactor and optimize distributed COPY
* Add support for ON CONFLICT DO UPDATE for compressed hypertables
* Skip Ordered Append when only 1 child node is present
* Propagate vacuum/analyze to compressed chunks
* Reduce decompression during constraint checking
* Optimize compressed chunk resorting
* Support sending telemetry event reports

**Bugfixes**
* Fix SEGMENTBY columns predicates to be pushed down
* Handle user-defined FDW options properly
* Decompression may have lost DEFAULT values
* Fix issue creating dimensional constraints
* Improve interpolate error message on datatype mismatch
* Fix unique constraint on compressed tables
* Add permission checks to run_job()
* Enable run_job() for telemetry job
* Fix on-insert decompression after schema changes
* Quote username identifier appropriately
* Fix tablespace for compressed hypertable and corresponding toast
* Fix ALTER TABLE SET with normal tables
* Reduce memory usage for distributed analyze
* Fix subtransaction resource owner

Log message:
postgresql-timescaledb: updated to 2.10.3

2.10.3

Bug fixes

* Fix parameterization in DecompressChunk path generation
* Fix broken CAgg with JOIN repair function

2.10.2

Bug fixes

* Fix file trailer handling in the COPY fetcher
* Add checks for malloc failure in libpq calls
* Out of on_proc_exit slots on guc license change
* Use consistent snapshots when scanning metadata
* Do not segfault on large histogram() parameters
* Ensure superuser perms during copy/move chunk
* Fix when no FROM clause in continuous aggregate definition
* Fix join rte in CAggs with joins
* Fix duplicated entries on timescaledb_experimental.policies view
* Fix segfault after column drop on compressed table
* Copy scheduled_jobs list before sorting it
* Allow named time_bucket arguments in Cagg definition
* Fix refresh from beginning of Continuous Aggregate with variable time bucket
* Use regrole for job owner
* Enable indexscan on uncompressed part of partially compressed chunks

2.10.1

Bug fixes

* Support Continuous Aggregates names in hypertable_(detailed_)size
* Fix concurrent locking with chunk_data_node table
* Fix some incorrect memory handling
* Use NameData and namestrcpy for names
* Set PortalContext when starting job
* Fix uninitialized bucket_info variable
* Make copy fetcher more async
* Fix num_chunks inconsistency in hypertables view
* Fix column name handling in old-style continuous aggregates
* Fix multinode DML HA performance regression
* Fix Hierarchical Continuous Aggregates chunk_interval_size
* Fix sub-second intervals in hierarchical caggs

2.10.0

Features

* Allow joins in continuous aggregates
* Refactor INSERT into compressed chunks
* Allow RETURNING clause when inserting into compressed chunks
* Manage life-cycle of connections via memory contexts
* Make connection establishment interruptible
* Make data node command execution interruptible
* Extend enabling compression on a continuous aggregrate with \ 
'compress_segmentby' and 'compress_orderby' parameters

Bugfixes

* Fix use of prepared statement in async module
* Add role-level security to job error log
* Fix next_start calculation for fixed schedules
* Fix enabling compression on continuous aggregates with columns requiring quotation

Log message:
postgresql-timescaledb: update to 2.9.3

Skip bucketing when start or end of refresh job is null
Fix column ordering in compressed table index not following the order of
  a multi-column segment by definition
Don't enable clang-tidy by default
Fix year not being considered as a multiple of day/month in hierarchical
  continuous aggregates
Lock down search_path in SPI calls

Log message:
postgresql-timescaledb: update to 2.9.1

Hierarchical Continuous Aggregates
Improve time_bucket_gapfill function
Introduce fixed schedules for background jobs
Use alter_data_node() to change the data node configuration

Log message:
postgresql-timescaledb: update to 2.8.1

bugfixes

Log message:
postgresql-timescaledb: update to 2.8.0

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