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Citus stats tenants collector view #6761

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halilozanakgul
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Add a view that collects statistics from all nodes

@halilozanakgul halilozanakgul force-pushed the citus_stats_tenants_collector_view branch from 92e842c to c27a066 Compare March 14, 2023 14:45
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codecov bot commented Mar 14, 2023

Codecov Report

Merging #6761 (b1737a2) into multi-tenant-monitoring (d660339) will increase coverage by 7.64%.
The diff coverage is 97.63%.

❗ Current head b1737a2 differs from pull request most recent head 762c515. Consider uploading reports for the commit 762c515 to get more accurate results

@@                     Coverage Diff                     @@
##           multi-tenant-monitoring    #6761      +/-   ##
===========================================================
+ Coverage                    85.04%   92.69%   +7.64%     
===========================================================
  Files                          261      261              
  Lines                        56389    56390       +1     
===========================================================
+ Hits                         47957    52269    +4312     
+ Misses                        8432     4121    -4311     

AS $function$
BEGIN
RETURN QUERY
SELECT *
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cool, similar trick with citus_stat_activity :) I wish we had a single function to pull from different tables, but this is also good

@halilozanakgul halilozanakgul mentioned this pull request Mar 21, 2023
8 tasks
@halilozanakgul halilozanakgul force-pushed the multi-tenant-monitoring branch 2 times, most recently from 7707875 to 51d167b Compare March 27, 2023 09:16
@halilozanakgul halilozanakgul force-pushed the citus_stats_tenants_collector_view branch from c27a066 to b1737a2 Compare March 27, 2023 13:18
@halilozanakgul halilozanakgul force-pushed the citus_stats_tenants_collector_view branch from b1737a2 to 762c515 Compare March 27, 2023 14:20
@halilozanakgul halilozanakgul merged commit b989e88 into multi-tenant-monitoring Mar 27, 2023
@halilozanakgul halilozanakgul deleted the citus_stats_tenants_collector_view branch March 27, 2023 14:42
halilozanakgul added a commit that referenced this pull request Apr 3, 2023
Add a view that collects statistics from all nodes
halilozanakgul added a commit that referenced this pull request Apr 4, 2023
Add a view that collects statistics from all nodes
halilozanakgul added a commit that referenced this pull request Apr 5, 2023
Add a view that collects statistics from all nodes
halilozanakgul added a commit that referenced this pull request Apr 5, 2023
DESCRIPTION: Adds views that monitor statistics on tenant usages

This PR adds `citus_stats_tenants` view that monitors the tenants on the
cluster.

`citus_stats_tenants` shows the node id, colocation id, tenant
attribute, read count in this period and last period, and query count in
this period and last period of the tenant.
Tenant attribute currently is the tenant's distribution column value,
later when schema based sharding is introduced, this meaning might
change.
A period is a time bucket the queries are counted by. Read and query
counts for this period can increase until the current period ends. After
that those counts are moved to last period's counts, which cannot
change. The period length can be set using 'citus.stats_tenants_period'.

`SELECT` queries are counted as _read_ queries, `INSERT`, `UPDATE` and
`DELETE` queries are counted as _write_ queries. So in the view read
counts are `SELECT` counts and query counts are `SELECT`, `INSERT`,
`UPDATE` and `DELETE` count.

The data is stored in shared memory, in a struct named
`MultiTenantMonitor`.

`citus_stats_tenants` shows the data from local tenants.

`citus_stats_tenants` show up to `citus.stats_tenant_limit` number of
tenants.
The tenants are scored based on the number of queries they run and the
recency of those queries. Every query ran increases the score of tenant
by `ONE_QUERY_SCORE`, and after every period ends the scores are halved.
Halving is done lazily.
To retain information a longer the monitor keeps up to 3 times
`citus.stats_tenant_limit` tenants. When the tenant count hits `3 *
citus.stats_tenant_limit`, last `citus.stats_tenant_limit` tenants are
removed. To see all stored tenants you can use
`citus_stats_tenants(return_all_tenants := true)`

- [x] Create collector view that gets data from all nodes. #6761 
- [x] Add monitoring log #6762 
- [x] Create enable/disable GUC #6769 
- [x] Parse the annotation string correctly #6796 
- [x] Add local queries and prepared statements #6797
- [x] Rename to citus_stat_statements #6821 
- [x] Run pgbench
- [x] Fix role permissions #6812

---------

Co-authored-by: Gokhan Gulbiz <ggulbiz@gmail.com>
Co-authored-by: Jelte Fennema <github-tech@jeltef.nl>
hanefi added a commit that referenced this pull request May 2, 2023
In this release, I tried something different. I experimented with adding
the PR number and title to the changelog right before each changelog
entry. This way, it is easier to track where a particular changelog
entry comes from. After reviews are over, I plan to remove those lines
with PR numbers and titles.

I went through all the PRs that are merged after 11.2.0 release and came
up with a list of PRs that may need help with changelog entries. You can
see details on PRs grouped in several sections below.

## PRs with missing entries

The following PRs below do not have a changelog entry. If you think that
this is a mistake, please share it in this PR along with a suggestion on
what the changelog item should be.

PR #6846 : fix 3 flaky tests in failure schedule
PR #6844 : Add CPU usage to citus_stat_tenants
PR #6833 : Fix citus_stat_tenants period updating bug
PR #6787 : Add more tests for ddl coverage
PR #6842 : Add build-cdc-* temporary directories to .gitignore
PR #6841 : Add build-cdc-* temporary directories to .gitignore
PR #6840 : Bump Citus to 12.0devel
PR #6824 : Fixes flakiness in multi_metadata_sync test
PR #6811 : Backport identity column improvements to v11.2
PR #6830 : In run_test.py actually return worker_count
PR #6825 : Fixes flakiness in multi_cluster_management test
PR #6816 : Refactor run_test.py
PR #6817 : Explicitly disallow local rels when inserting into dist table
PR #6821 : Rename citus stats tenants
PR #6822 : Add some more tests for initial sql support
PR #6819 : Fix flakyness in
citus_split_shard_by_split_points_deferred_drop
PR #6814 : Make python-regress based tests runnable with run_test.py
PR #6813 : Fix flaky multi_mx_schema_support test
PR #6720 : Convert columnar tap tests to pytest
PR #6812 : Revoke statistics permissions from public and grant them to
pg_monitor
PR #6769 : Citus stats tenants guc
PR #6807 : Fix the incorrect (constant) value passed to pointer-to-bool
parameter, pass a NULL as the value is not used
PR #6797 : Attribute local queries and cached plans on local execution
PR #6796 : Parse the annotation string correctly
PR #6762 : Add logs to citus_stats_tenants
PR #6773 : Add initial sql support for distributed tables that don't
have a shard key
PR #6792 : Disentangle MERGE planning code from the modify-planning code
path
PR #6761 : Citus stats tenants collector view
PR #6791 : Make 8 more tests runnable multiple times via run_test.py
PR #6786 : Refactor some of the planning code to accommodate a new
planning path for MERGE SQL
PR #6789 : Rename AllRelations.. functions to AllDistributedRelations..
PR #6788 : Actually skip arbitrary_configs_router & nested_execution for
AllNullDistKeyDefaultConfig
PR #6783 : Add a config for arbitrary config tests where all the tables
are null-shard-key tables
PR #6784 : Fix attach partition: citus local to null distributed
PR #6782 : Add an arbitrary config test heavily based on
multi_router_planner_fast_path.sql
PR #6781 : Decide what to do with router planner error at one place
PR #6778 : Support partitioning for dist tables with null dist keys
PR #6766 : fix pip lock file
PR #6764 : Make workerCount configurable for regression tests
PR #6745 : Add support for creating distributed tables with a null shard
key
PR #6696 : This implements MERGE phase-III
PR #6767 : Add pytest depedencies to Pipfile
PR #6760 : Decide core distribution params in CreateCitusTable
PR #6759 : Add multi_create_fdw into minimal_schedule
PR #6743 : Replace CITUS_TABLE_WITH_NO_DIST_KEY checks with
HasDistributionKey()
PR #6751 : Stabilize single_node.sql and others that report illegal node
removal
PR #6742 : Refactor CreateDistributedTable()
PR #6747 : Remove unused lock functions
PR #6744 : Fix multiple output version arbitrary config tests
PR #6741 : Stabilize single node tests
PR #6740 : Fix string eval bug in migration files check
PR #6736 : Make run_test.py and create_test.py importable without errors
PR #6734 : Don't blanket ignore flake8 E402 error
PR #6737 : Fixes bookworm packaging pipeline problem
PR #6735 : Fix run_test.py on python 3.9
PR #6733 : MERGE: In deparser, add missing check for RETURNING clause.
PR #6714 : Remove auto_explain workaround in citus explain hook for
ALTER TABLE
PR #6719 : Fix flaky test
PR #6718 : Add more powerfull dependency tracking to run_test.py
PR #6710 : Install non-vulnerable cryptography package
PR #6711 : Support compilation and run tests on latest PG versions
PR #6700 : Add auto-formatting and linting to our python code
PR #6707 : Allow multi_insert_select to run repeatably
PR #6708 : Fix flakyness in failure_create_distributed_table_non_empty
PR #6698 : Miscellaneous cleanup
PR #6704 : Update README for 11.2
PR #6703 : Fix dubious ownership error from git
PR #6690 : Bump Citus to 11.3devel

## Too long changelog entries

The following PRs have changelog entries that are too long to fit in a
single line. I'd expect authors to supply at changelog entries in
`DESCRIPTION:` lines that are at most 78 characters. If you want to
supply multi-line changelog items, you can have multiple lines that
start with `DESCRIPTION:` instead.

PR #6837 : fixes update propagation bug when
`citus_set_coordinator_host` is called more than once
PR #6738 :  Identity column implementation refactorings
PR #6756 : Schedule parallel shard moves in background rebalancer by
removing task dependencies between shard moves across colocation groups.
PR #6793 : Add a GUC to disallow planning the queries that reference
non-colocated tables via router planner
PR #6726 : fix memory leak during altering distributed table with a lot
of partition and shards
PR #6722 : fix memory leak during distribution of a table with a lot of
partitions
PR #6693 : prevent memory leak during ConvertTable with a lot of
partitions

## Empty changelog entries.

The following PR had an empty `DESCRIPTION:` line. This generates an
empty changelog line that needs to be removed manually. Please either
provide a short entry, or remove `DESCRIPTION:` line completely.

PR #6810 : Make CDC decoder an independent extension
PR #6827 : Makefile changes to build CDC in builddir for pgoutput and
wal2json.

---------

Co-authored-by: Onur Tirtir <onurcantirtir@gmail.com>
hanefi added a commit that referenced this pull request May 2, 2023
In this release, I tried something different. I experimented with adding
the PR number and title to the changelog right before each changelog
entry. This way, it is easier to track where a particular changelog
entry comes from. After reviews are over, I plan to remove those lines
with PR numbers and titles.

I went through all the PRs that are merged after 11.2.0 release and came
up with a list of PRs that may need help with changelog entries. You can
see details on PRs grouped in several sections below.

The following PRs below do not have a changelog entry. If you think that
this is a mistake, please share it in this PR along with a suggestion on
what the changelog item should be.

PR #6846 : fix 3 flaky tests in failure schedule
PR #6844 : Add CPU usage to citus_stat_tenants
PR #6833 : Fix citus_stat_tenants period updating bug
PR #6787 : Add more tests for ddl coverage
PR #6842 : Add build-cdc-* temporary directories to .gitignore
PR #6841 : Add build-cdc-* temporary directories to .gitignore
PR #6840 : Bump Citus to 12.0devel
PR #6824 : Fixes flakiness in multi_metadata_sync test
PR #6811 : Backport identity column improvements to v11.2
PR #6830 : In run_test.py actually return worker_count
PR #6825 : Fixes flakiness in multi_cluster_management test
PR #6816 : Refactor run_test.py
PR #6817 : Explicitly disallow local rels when inserting into dist table
PR #6821 : Rename citus stats tenants
PR #6822 : Add some more tests for initial sql support
PR #6819 : Fix flakyness in
citus_split_shard_by_split_points_deferred_drop
PR #6814 : Make python-regress based tests runnable with run_test.py
PR #6813 : Fix flaky multi_mx_schema_support test
PR #6720 : Convert columnar tap tests to pytest
PR #6812 : Revoke statistics permissions from public and grant them to
pg_monitor
PR #6769 : Citus stats tenants guc
PR #6807 : Fix the incorrect (constant) value passed to pointer-to-bool
parameter, pass a NULL as the value is not used
PR #6797 : Attribute local queries and cached plans on local execution
PR #6796 : Parse the annotation string correctly
PR #6762 : Add logs to citus_stats_tenants
PR #6773 : Add initial sql support for distributed tables that don't
have a shard key
PR #6792 : Disentangle MERGE planning code from the modify-planning code
path
PR #6761 : Citus stats tenants collector view
PR #6791 : Make 8 more tests runnable multiple times via run_test.py
PR #6786 : Refactor some of the planning code to accommodate a new
planning path for MERGE SQL
PR #6789 : Rename AllRelations.. functions to AllDistributedRelations..
PR #6788 : Actually skip arbitrary_configs_router & nested_execution for
AllNullDistKeyDefaultConfig
PR #6783 : Add a config for arbitrary config tests where all the tables
are null-shard-key tables
PR #6784 : Fix attach partition: citus local to null distributed
PR #6782 : Add an arbitrary config test heavily based on
multi_router_planner_fast_path.sql
PR #6781 : Decide what to do with router planner error at one place
PR #6778 : Support partitioning for dist tables with null dist keys
PR #6766 : fix pip lock file
PR #6764 : Make workerCount configurable for regression tests
PR #6745 : Add support for creating distributed tables with a null shard
key
PR #6696 : This implements MERGE phase-III
PR #6767 : Add pytest depedencies to Pipfile
PR #6760 : Decide core distribution params in CreateCitusTable
PR #6759 : Add multi_create_fdw into minimal_schedule
PR #6743 : Replace CITUS_TABLE_WITH_NO_DIST_KEY checks with
HasDistributionKey()
PR #6751 : Stabilize single_node.sql and others that report illegal node
removal
PR #6742 : Refactor CreateDistributedTable()
PR #6747 : Remove unused lock functions
PR #6744 : Fix multiple output version arbitrary config tests
PR #6741 : Stabilize single node tests
PR #6740 : Fix string eval bug in migration files check
PR #6736 : Make run_test.py and create_test.py importable without errors
PR #6734 : Don't blanket ignore flake8 E402 error
PR #6737 : Fixes bookworm packaging pipeline problem
PR #6735 : Fix run_test.py on python 3.9
PR #6733 : MERGE: In deparser, add missing check for RETURNING clause.
PR #6714 : Remove auto_explain workaround in citus explain hook for
ALTER TABLE
PR #6719 : Fix flaky test
PR #6718 : Add more powerfull dependency tracking to run_test.py
PR #6710 : Install non-vulnerable cryptography package
PR #6711 : Support compilation and run tests on latest PG versions
PR #6700 : Add auto-formatting and linting to our python code
PR #6707 : Allow multi_insert_select to run repeatably
PR #6708 : Fix flakyness in failure_create_distributed_table_non_empty
PR #6698 : Miscellaneous cleanup
PR #6704 : Update README for 11.2
PR #6703 : Fix dubious ownership error from git
PR #6690 : Bump Citus to 11.3devel

The following PRs have changelog entries that are too long to fit in a
single line. I'd expect authors to supply at changelog entries in
`DESCRIPTION:` lines that are at most 78 characters. If you want to
supply multi-line changelog items, you can have multiple lines that
start with `DESCRIPTION:` instead.

PR #6837 : fixes update propagation bug when
`citus_set_coordinator_host` is called more than once
PR #6738 :  Identity column implementation refactorings
PR #6756 : Schedule parallel shard moves in background rebalancer by
removing task dependencies between shard moves across colocation groups.
PR #6793 : Add a GUC to disallow planning the queries that reference
non-colocated tables via router planner
PR #6726 : fix memory leak during altering distributed table with a lot
of partition and shards
PR #6722 : fix memory leak during distribution of a table with a lot of
partitions
PR #6693 : prevent memory leak during ConvertTable with a lot of
partitions

The following PR had an empty `DESCRIPTION:` line. This generates an
empty changelog line that needs to be removed manually. Please either
provide a short entry, or remove `DESCRIPTION:` line completely.

PR #6810 : Make CDC decoder an independent extension
PR #6827 : Makefile changes to build CDC in builddir for pgoutput and
wal2json.

---------

Co-authored-by: Onur Tirtir <onurcantirtir@gmail.com>
(cherry picked from commit 9344300)
hanefi added a commit that referenced this pull request May 2, 2023
In this release, I tried something different. I experimented with adding
the PR number and title to the changelog right before each changelog
entry. This way, it is easier to track where a particular changelog
entry comes from. After reviews are over, I plan to remove those lines
with PR numbers and titles.

I went through all the PRs that are merged after 11.2.0 release and came
up with a list of PRs that may need help with changelog entries. You can
see details on PRs grouped in several sections below.

The following PRs below do not have a changelog entry. If you think that
this is a mistake, please share it in this PR along with a suggestion on
what the changelog item should be.

PR #6846 : fix 3 flaky tests in failure schedule
PR #6844 : Add CPU usage to citus_stat_tenants
PR #6833 : Fix citus_stat_tenants period updating bug
PR #6787 : Add more tests for ddl coverage
PR #6842 : Add build-cdc-* temporary directories to .gitignore
PR #6841 : Add build-cdc-* temporary directories to .gitignore
PR #6840 : Bump Citus to 12.0devel
PR #6824 : Fixes flakiness in multi_metadata_sync test
PR #6811 : Backport identity column improvements to v11.2
PR #6830 : In run_test.py actually return worker_count
PR #6825 : Fixes flakiness in multi_cluster_management test
PR #6816 : Refactor run_test.py
PR #6817 : Explicitly disallow local rels when inserting into dist table
PR #6821 : Rename citus stats tenants
PR #6822 : Add some more tests for initial sql support
PR #6819 : Fix flakyness in
citus_split_shard_by_split_points_deferred_drop
PR #6814 : Make python-regress based tests runnable with run_test.py
PR #6813 : Fix flaky multi_mx_schema_support test
PR #6720 : Convert columnar tap tests to pytest
PR #6812 : Revoke statistics permissions from public and grant them to
pg_monitor
PR #6769 : Citus stats tenants guc
PR #6807 : Fix the incorrect (constant) value passed to pointer-to-bool
parameter, pass a NULL as the value is not used
PR #6797 : Attribute local queries and cached plans on local execution
PR #6796 : Parse the annotation string correctly
PR #6762 : Add logs to citus_stats_tenants
PR #6773 : Add initial sql support for distributed tables that don't
have a shard key
PR #6792 : Disentangle MERGE planning code from the modify-planning code
path
PR #6761 : Citus stats tenants collector view
PR #6791 : Make 8 more tests runnable multiple times via run_test.py
PR #6786 : Refactor some of the planning code to accommodate a new
planning path for MERGE SQL
PR #6789 : Rename AllRelations.. functions to AllDistributedRelations..
PR #6788 : Actually skip arbitrary_configs_router & nested_execution for
AllNullDistKeyDefaultConfig
PR #6783 : Add a config for arbitrary config tests where all the tables
are null-shard-key tables
PR #6784 : Fix attach partition: citus local to null distributed
PR #6782 : Add an arbitrary config test heavily based on
multi_router_planner_fast_path.sql
PR #6781 : Decide what to do with router planner error at one place
PR #6778 : Support partitioning for dist tables with null dist keys
PR #6766 : fix pip lock file
PR #6764 : Make workerCount configurable for regression tests
PR #6745 : Add support for creating distributed tables with a null shard
key
PR #6696 : This implements MERGE phase-III
PR #6767 : Add pytest depedencies to Pipfile
PR #6760 : Decide core distribution params in CreateCitusTable
PR #6759 : Add multi_create_fdw into minimal_schedule
PR #6743 : Replace CITUS_TABLE_WITH_NO_DIST_KEY checks with
HasDistributionKey()
PR #6751 : Stabilize single_node.sql and others that report illegal node
removal
PR #6742 : Refactor CreateDistributedTable()
PR #6747 : Remove unused lock functions
PR #6744 : Fix multiple output version arbitrary config tests
PR #6741 : Stabilize single node tests
PR #6740 : Fix string eval bug in migration files check
PR #6736 : Make run_test.py and create_test.py importable without errors
PR #6734 : Don't blanket ignore flake8 E402 error
PR #6737 : Fixes bookworm packaging pipeline problem
PR #6735 : Fix run_test.py on python 3.9
PR #6733 : MERGE: In deparser, add missing check for RETURNING clause.
PR #6714 : Remove auto_explain workaround in citus explain hook for
ALTER TABLE
PR #6719 : Fix flaky test
PR #6718 : Add more powerfull dependency tracking to run_test.py
PR #6710 : Install non-vulnerable cryptography package
PR #6711 : Support compilation and run tests on latest PG versions
PR #6700 : Add auto-formatting and linting to our python code
PR #6707 : Allow multi_insert_select to run repeatably
PR #6708 : Fix flakyness in failure_create_distributed_table_non_empty
PR #6698 : Miscellaneous cleanup
PR #6704 : Update README for 11.2
PR #6703 : Fix dubious ownership error from git
PR #6690 : Bump Citus to 11.3devel

The following PRs have changelog entries that are too long to fit in a
single line. I'd expect authors to supply at changelog entries in
`DESCRIPTION:` lines that are at most 78 characters. If you want to
supply multi-line changelog items, you can have multiple lines that
start with `DESCRIPTION:` instead.

PR #6837 : fixes update propagation bug when
`citus_set_coordinator_host` is called more than once
PR #6738 :  Identity column implementation refactorings
PR #6756 : Schedule parallel shard moves in background rebalancer by
removing task dependencies between shard moves across colocation groups.
PR #6793 : Add a GUC to disallow planning the queries that reference
non-colocated tables via router planner
PR #6726 : fix memory leak during altering distributed table with a lot
of partition and shards
PR #6722 : fix memory leak during distribution of a table with a lot of
partitions
PR #6693 : prevent memory leak during ConvertTable with a lot of
partitions

The following PR had an empty `DESCRIPTION:` line. This generates an
empty changelog line that needs to be removed manually. Please either
provide a short entry, or remove `DESCRIPTION:` line completely.

PR #6810 : Make CDC decoder an independent extension
PR #6827 : Makefile changes to build CDC in builddir for pgoutput and
wal2json.

---------

Co-authored-by: Onur Tirtir <onurcantirtir@gmail.com>
(cherry picked from commit 9344300)
emelsimsek pushed a commit that referenced this pull request May 24, 2023
In this release, I tried something different. I experimented with adding
the PR number and title to the changelog right before each changelog
entry. This way, it is easier to track where a particular changelog
entry comes from. After reviews are over, I plan to remove those lines
with PR numbers and titles.

I went through all the PRs that are merged after 11.2.0 release and came
up with a list of PRs that may need help with changelog entries. You can
see details on PRs grouped in several sections below.

## PRs with missing entries

The following PRs below do not have a changelog entry. If you think that
this is a mistake, please share it in this PR along with a suggestion on
what the changelog item should be.

PR #6846 : fix 3 flaky tests in failure schedule
PR #6844 : Add CPU usage to citus_stat_tenants
PR #6833 : Fix citus_stat_tenants period updating bug
PR #6787 : Add more tests for ddl coverage
PR #6842 : Add build-cdc-* temporary directories to .gitignore
PR #6841 : Add build-cdc-* temporary directories to .gitignore
PR #6840 : Bump Citus to 12.0devel
PR #6824 : Fixes flakiness in multi_metadata_sync test
PR #6811 : Backport identity column improvements to v11.2
PR #6830 : In run_test.py actually return worker_count
PR #6825 : Fixes flakiness in multi_cluster_management test
PR #6816 : Refactor run_test.py
PR #6817 : Explicitly disallow local rels when inserting into dist table
PR #6821 : Rename citus stats tenants
PR #6822 : Add some more tests for initial sql support
PR #6819 : Fix flakyness in
citus_split_shard_by_split_points_deferred_drop
PR #6814 : Make python-regress based tests runnable with run_test.py
PR #6813 : Fix flaky multi_mx_schema_support test
PR #6720 : Convert columnar tap tests to pytest
PR #6812 : Revoke statistics permissions from public and grant them to
pg_monitor
PR #6769 : Citus stats tenants guc
PR #6807 : Fix the incorrect (constant) value passed to pointer-to-bool
parameter, pass a NULL as the value is not used
PR #6797 : Attribute local queries and cached plans on local execution
PR #6796 : Parse the annotation string correctly
PR #6762 : Add logs to citus_stats_tenants
PR #6773 : Add initial sql support for distributed tables that don't
have a shard key
PR #6792 : Disentangle MERGE planning code from the modify-planning code
path
PR #6761 : Citus stats tenants collector view
PR #6791 : Make 8 more tests runnable multiple times via run_test.py
PR #6786 : Refactor some of the planning code to accommodate a new
planning path for MERGE SQL
PR #6789 : Rename AllRelations.. functions to AllDistributedRelations..
PR #6788 : Actually skip arbitrary_configs_router & nested_execution for
AllNullDistKeyDefaultConfig
PR #6783 : Add a config for arbitrary config tests where all the tables
are null-shard-key tables
PR #6784 : Fix attach partition: citus local to null distributed
PR #6782 : Add an arbitrary config test heavily based on
multi_router_planner_fast_path.sql
PR #6781 : Decide what to do with router planner error at one place
PR #6778 : Support partitioning for dist tables with null dist keys
PR #6766 : fix pip lock file
PR #6764 : Make workerCount configurable for regression tests
PR #6745 : Add support for creating distributed tables with a null shard
key
PR #6696 : This implements MERGE phase-III
PR #6767 : Add pytest depedencies to Pipfile
PR #6760 : Decide core distribution params in CreateCitusTable
PR #6759 : Add multi_create_fdw into minimal_schedule
PR #6743 : Replace CITUS_TABLE_WITH_NO_DIST_KEY checks with
HasDistributionKey()
PR #6751 : Stabilize single_node.sql and others that report illegal node
removal
PR #6742 : Refactor CreateDistributedTable()
PR #6747 : Remove unused lock functions
PR #6744 : Fix multiple output version arbitrary config tests
PR #6741 : Stabilize single node tests
PR #6740 : Fix string eval bug in migration files check
PR #6736 : Make run_test.py and create_test.py importable without errors
PR #6734 : Don't blanket ignore flake8 E402 error
PR #6737 : Fixes bookworm packaging pipeline problem
PR #6735 : Fix run_test.py on python 3.9
PR #6733 : MERGE: In deparser, add missing check for RETURNING clause.
PR #6714 : Remove auto_explain workaround in citus explain hook for
ALTER TABLE
PR #6719 : Fix flaky test
PR #6718 : Add more powerfull dependency tracking to run_test.py
PR #6710 : Install non-vulnerable cryptography package
PR #6711 : Support compilation and run tests on latest PG versions
PR #6700 : Add auto-formatting and linting to our python code
PR #6707 : Allow multi_insert_select to run repeatably
PR #6708 : Fix flakyness in failure_create_distributed_table_non_empty
PR #6698 : Miscellaneous cleanup
PR #6704 : Update README for 11.2
PR #6703 : Fix dubious ownership error from git
PR #6690 : Bump Citus to 11.3devel

## Too long changelog entries

The following PRs have changelog entries that are too long to fit in a
single line. I'd expect authors to supply at changelog entries in
`DESCRIPTION:` lines that are at most 78 characters. If you want to
supply multi-line changelog items, you can have multiple lines that
start with `DESCRIPTION:` instead.

PR #6837 : fixes update propagation bug when
`citus_set_coordinator_host` is called more than once
PR #6738 :  Identity column implementation refactorings
PR #6756 : Schedule parallel shard moves in background rebalancer by
removing task dependencies between shard moves across colocation groups.
PR #6793 : Add a GUC to disallow planning the queries that reference
non-colocated tables via router planner
PR #6726 : fix memory leak during altering distributed table with a lot
of partition and shards
PR #6722 : fix memory leak during distribution of a table with a lot of
partitions
PR #6693 : prevent memory leak during ConvertTable with a lot of
partitions

## Empty changelog entries.

The following PR had an empty `DESCRIPTION:` line. This generates an
empty changelog line that needs to be removed manually. Please either
provide a short entry, or remove `DESCRIPTION:` line completely.

PR #6810 : Make CDC decoder an independent extension
PR #6827 : Makefile changes to build CDC in builddir for pgoutput and
wal2json.

---------

Co-authored-by: Onur Tirtir <onurcantirtir@gmail.com>
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