PS-9590 [Doc] Release notes for - PS 8.4.4-4

	modified:   docs/copyright-and-licensing-information.md
	new file:   docs/release-notes/8.4.4-4.md
	modified:   docs/release-notes/release-notes-index.md
	modified:   mkdocs-base.yml
	modified:   variables.yml

Author: alina-derkach-oaza

docs/copyright-and-licensing-information.md

@@ -2,11 +2,11 @@
 
 ## Documentation licensing
 
-Percona Server for MySQL documentation is (C)2009-2023 Percona LLC and/or its affiliates and is distributed under the [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/).
+Percona Server for MySQL documentation is (C)2009-2025 Percona LLC and/or its affiliates and is distributed under the [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/).
 
 ## Software license
 
-*Percona Server for MySQL* is built upon MySQL from Oracle. Along with making our own
+Percona Server for MySQL is built upon MySQL from Oracle. Along with making our own
 modifications, we merge in changes from other sources such as community
 contributions and changes from MariaDB.
 

docs/release-notes/8.4.4-4.md

@@ -0,0 +1,79 @@
+# Percona Server for MySQL 8.4.4-4 (2025-02-)
+
+Get started with [Quickstart Guide for Percona Server for MySQL].
+
+[Percona Server for MySQL 8.4.4-4] includes all the features and bug fixes available in the MySQL 8.4.4 Community Edition in addition to enterprise-grade features developed by Percona.
+
+## Release highlights
+
+### Percona Server for MySQL 8.4.4-4
+
+Improves the [Data masking](..//data-masking-overview.md) performance by introducing an internal term cache. The new cache speeds up lookups for `gen_blocklist()` and `gen_dictionary()` functions by storing dictionary data in memory. However, if the dictionary table is modified directly (outside of the proper functions), the cache may become out of sync. To fix this, use the `new masking_dictionaries_flush()` function.
+
+Changes also affect row-based replication: dictionary changes on the source server are replicated, but the term cache on the replica doesn’t update immediately. To address this, a new system setting, `component_masking_functions.dictionaries_flush_interval_seconds()`, can be set to automatically refresh the cache at specified intervals, helping replicas stay in sync.
+
+Find more detailed information in the [Data masking overview](..//data-masking-overview.md) and in the [Data masking component functions](..//data-masking-function-list.md).
+
+### MySQL 8.4.4
+
+Improvements and bug fixes introduced by Oracle for MySQL 8.4.4 and included in Percona Server for MySQL are the following:
+
+* Certain IO buffer serializations triggered an assertion in debug builds, causing the system to hang. (Bug #37139618)
+
+* Dropping the primary key and adding a new `AUTO_INCREMENT` column as the primary key in descending order using the `INPLACE` algorithm resulted in failure. (Bug #36658450)
+
+* Queries using a descending primary key with the `index_merge` optimization sometimes returned incorrect results, including missing rows. (Bug #106207, Bug #33767814)
+
+* When large transactions were being received and applied, and a request to stop the replication channel was made using STOP REPLICA, MySQL failed to stop the channel properly. As a result, it stopped processing channel commands. Additionally, the server shutdown process did not complete gracefully, requiring either the MySQL process to be killed or the host system to be restarted. (Bug #115966, Bug #37008345)
+
+Find the complete list of bug fixes and changes in the [MySQL 8.4.4 release notes].
+
+## Improvements
+
+* [PS-9148](https://perconadev.atlassian.net/browse/PS-9148): Extends the [Data masking](..//data-masking-overview.md) with new additions from MySQL 8.3.0 [Enterprise Data Masking and De-Identification Component Variables](https://dev.mysql.com/doc/refman/8.4/en/data-masking-component-variables.html).
+
+## Bug fixes
+
+* [PS-9391](https://perconadev.atlassian.net/browse/PS-9391): The replication broke with the error `HA_ERR_KEY_NOT_FOUND` when the `slave_rows_search_algorithms` were set to `INDEX_SCAN,HASH_SCAN`.
+
+* [PS-9416](https://perconadev.atlassian.net/browse/PS-9416): The error messages from the Key Management Interoperability Protocol (KMIP) component were not descriptive.
+
+* [9509](https://perconadev.atlassian.net/browse/PS-9509): Percona Server stoped tracking the `global_connection_memory` when using `thread_handling='pool-of-threads'`.
+
+* [PS-9537](https://perconadev.atlassian.net/browse/PS-9537): When building a new component that used mysql_command_xxx services (such as `mysql_command_factory`, `mysql_command_query`, etc.), it was impossible to reuse the same connection to run multiple queries. This issue was observed with `SELECT` queries, but it may also apply to `INSERT`, `UPDATE`, and `DELETE` operations.
+
+* [PS-9542](https://perconadev.atlassian.net/browse/PS-9542): Added Clang-19 to Azure pipelines, and fixed the clang-19 compilation issues.
+
+* [PS-9551](https://perconadev.atlassian.net/browse/PS-9551): When building a new component that used mysql_command_xxx services (such as `mysql_command_factory`, `mysql_command_query`, etc.), a server exit was encountered when setting the `MYSQL_COMMAND_LOCAL_THD_HANDLE` option.
+
+* [PS-9611](https://perconadev.atlassian.net/browse/PS-9611): An assertion failure occurred during server shutdown: `!is_set() || m_can_overwrite_status`.
+
+* [PS-9612](https://perconadev.atlassian.net/browse/PS-9612): Percona Server build failed if more than 128 threads were available. Percona merged the fix form [MariaDB](https://github.com/MariaDB/server/commit/fd9f1638ea7).
+
+* [PS-9654](https://perconadev.atlassian.net/browse/PS-9654): There was an incorrect usage of `setup_component_customized.inc` in the MySQL Test Runner (MTR) tests.
+
+## Additional resources
+
+* Install [Percona Server for MySQL 8.4]
+
+* The [Percona Server for MySQL GitHub repository]
+
+* Download product binaries, packages, and tarballs at [Percona Software Downloads]
+
+* [Contribute to the documentation]
+
+* For [training], contact [Percona Training - Start learning now]
+
+[Quickstart Guide for Percona Server for MySQL]: ../quickstart-overview.md
+[Percona Server for MySQL 8.4.4-4]: https://www.percona.com/software/mysql-database/percona-server
+
+
+[Percona Server for MySQL 8.4]: ../installation.md
+
+[MySQL 8.4.4 release notes]: https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-4.html
+
+[Percona Server for MySQL GitHub repository]: https://github.com/percona/percona-server
+[Percona Software Downloads]: https://www.percona.com/downloads
+[Contribute to the documentation]: https://github.com/percona/psmysql-docs/blob/8.0/contributing.md
+[training]: https://www.percona.com/training
+[Percona Training - Start learning now]: https://learn.percona.com/contact-me

docs/release-notes/release-notes-index.md

@@ -1,5 +1,7 @@
 # Percona Server for MySQL {{vers}} release notes index
 
+* [Percona Server for MySQL 8.4.4-4 (2025-02-)](8.4.4-4.md)
+
 * [Percona Server for MySQL 8.4.3-3 (2024-12-18)](8.4.3-3.md)
 
 * [Percona Server for MySQL 8.4.2-2 (2024-11-04)](8.4.2-2.md)

mkdocs-base.yml

@@ -4,7 +4,7 @@ site_name: Percona Server for MySQL
 site_description: Documentation
 site_author: Percona LLC
 copyright: >-
-  <a href="https://www.percona.com/about">Percona LLC</a> and its affiliates &copy; 2024 — <a href="#" onclick="Osano.cm.showDrawer('osano-cm-dom-info-dialog-open')">Cookie Preferences</a>
+  <a href="https://www.percona.com/about">Percona LLC</a> and its affiliates &copy; 2025 — <a href="#" onclick="Osano.cm.showDrawer('osano-cm-dom-info-dialog-open')">Cookie Preferences</a>
 repo_name: percona/psmysql-docs
 repo_url: https://github.com/percona/psmysql-docs
 edit_uri: edit/8.4/docs/
@@ -125,7 +125,7 @@ plugins:
   with-pdf: # https://github.com/orzih/mkdocs-with-pdf
           output_path: '_pdf/PerconaServer-8.4.pdf'
           cover_title: 'Percona Server Documentation'
-          cover_subtitle: 8.4.3-3 (2024-12-18)
+          cover_subtitle: 8.4.4-4 (2025-02-)
           author: 'Percona Technical Documentation Team'
           cover_logo: docs/_static/pdf-logo.png
           debug_html: false
@@ -150,6 +150,7 @@ nav:
   - get-help.md
   - Release notes:
     - Release notes index: release-notes/release-notes-index.md
+    - release-notes/8.4.4-4.md
     - release-notes/8.4.3-3.md
     - release-notes/8.4.2-2.md
     - release-notes/8.4.1.md

variables.yml

@@ -1,14 +1,14 @@
 # variables for HTML output
 
-release: '8.4.3-3'
+release: '8.4.4-4'
 version: '8.4'
 vers: '8.4' # we are going to use it instead of version
 pkg: 'ps-84-lts'
-pro_release: '8.4.3-3'
-tag: '8.4.3'
-arm_tag: '8.4.3-aarch64'
-year_tag: '2024'
-release_date: '2024-12-18'
-title_date: '2024-12-18'
+pro_release: '8.4.4-4'
+tag: '8.4.4'
+arm_tag: '8.4.4-aarch64'
+year_tag: '2025'
+release_date: '2025-02-'
+title_date: '2025-02-'