PXC-4834 Release notes for - PXC 8.4.8

	new file:   docs/release-notes/8.4.8-8.md
	modified:   docs/release-notes/release-notes_index.md
	modified:   docs/templates/pdf_cover_page.tpl
	modified:   mkdocs-base.yml
	modified:   variables.yml

Author: alina-derkach-oaza

docs/release-notes/8.4.8-8.md

@@ -0,0 +1,66 @@
+# Percona XtraDB Cluster 8.4.8-8 (2026-04-15)
+
+Percona XtraDB Cluster (PXC) supports critical business applications in both cloud and on-premises environments, including public, private, and hybrid setups. Our free, open source, enterprise-grade solution includes the high availability and security features your business requires to meet your customer expectations and business goals.
+
+Percona XtraDB Cluster 8.4.8-8 is based on Percona Server for MySQL and includes all improvements and bug fixes available in the [Percona Server for MySQL 8.4.8-8 (2025-03-12) release notes](https://docs.percona.com/percona-server/8.4/release-notes/8.4.8-8.html).
+
+## Release highlights
+
+### MySQL 8.4.8
+
+Improvements and bug fixes provided by Oracle for MySQL 8.4.8 and included in Percona Server for MySQL are the following:
+
+* The warning associated with redo logging being disabled is no longer present, as the underlying condition that triggered the warning has been eliminated. (Bug #37645185)
+
+* A problem affecting the handling of large insert operations has been corrected, improving stability during bulk data loads. (Bug #38208188)
+
+* An error that could arise when running certain SQL statements has been resolved. (Bug #38573285)
+
+* Issues encountered when generating table definitions via `SHOW CREATE TABLE` have been fixed. (Bug #38448700)
+
+* Bug #38298692 was addressed as part of the same fix set as Bug #38448700, resolving related inconsistencies in table metadata handling. (Bug #38298692)
+
+* Performance regressions affecting queries that rely on regular expression matching have been corrected. (Bug #114056, Bug #36326728)
+
+* The bundled OpenSSL dependency has been updated, addressing the issue tracked under Bug #38632932. (Bug #38632932)
+
+* A concurrency flaw in InnoDB that could occur when executing SQL through the `que_eval_sql` interface has been removed. (Bug #118705, Bug #38310595)
+
+* A timing issue that allowed binary logs to be removed before persisted expiration settings were fully applied has been fixed. (Bug #38554467)
+
+* Several defects that prevented connections from closing properly when using the Thread Pool have been resolved. (Bug #38170188, Bug #36782728, Bug #38549372)
+
+* An issue that caused gaps in GTID sequences when the `replica_skip_errors` option was enabled has been fixed. (Bug #28590993)
+
+Find the complete list of bug fixes and changes in the [MySQL 8.4.8 release notes](https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-8.html).
+
+## Bug fixes
+
+* [PXC-3583](https://perconadev.atlassian.net/browse/PXC-3583): Fixed an issue where the `validate-config` tool incorrectly reported that `ssl-ca`, `ssl-cert`, and `ssl-key` must all be defined to use encrypted traffic.
+
+* [PXC-4753](https://perconadev.atlassian.net/browse/PXC-4753): Fixed an issue where Percona audit log filter execution did not sync across Percona XtraDB Cluster nodes, although the audit log filter synced correctly on async or Group Replication replicas when executed on their source.
+
+* [PXC-4765](https://perconadev.atlassian.net/browse/PXC-4765): Fixed an issue where creating a trigger with a definer caused an inconsistency error and disconnected the node from the cluster.
+
+* [PXC-4802](https://perconadev.atlassian.net/browse/PXC-4802): Fixed a misleading "Initiating SST cancellation" log message that was printed during fatal signal handling.
+
+* [PXC-4814](https://perconadev.atlassian.net/browse/PXC-4814): Fixed an issue where `OPTIMIZE TABLE` failed when `wsrep_OSU_method` was set to RSU (Rolling Schema Update), due to case-sensitive writes to the binary log with `error_code=0`.
+
+* [PXC-4823](https://perconadev.atlassian.net/browse/PXC-4823): Fixed an issue where an asynchronous Percona XtraDB Cluster replica stalled when replicating `OPTIMIZE TABLE`.
+
+* [PXC-4845](https://perconadev.atlassian.net/browse/PXC-4845): Fixed an issue where a node remained up and running after an Incremental State Transfer (IST) failure, which could cause other nodes in the cluster to become unresponsive.
+
+* [PXC-4800](https://perconadev.atlassian.net/browse/PXC-4800): Fixed replication for internally generated transactions, ensuring operations on `mysql` and `performance_schema` tables and internal Thread Handler/Thread Data (THDs) are properly tracked while keeping replication suppressed by default.
+
+* [PXC-4965](https://perconadev.atlassian.net/browse/PXC-4965): Fixed an issue where running `SET PASSWORD` with a single quote (for example, `SET PASSWORD="a'b"`) could cause a node to leave the cluster.
+
+## Useful links
+
+* The [Percona XtraDB Cluster installation instructions](https://www.percona.com/doc/percona-xtradb-cluster/8.4/install/index.html)
+
+* The [Percona XtraDB Cluster downloads](https://www.percona.com/mysql/software/percona-xtradb-cluster)
+
+* The [Percona XtraDB Cluster GitHub location](https://github.com/percona/percona-xtradb-cluster)
+
+* To contribute to the documentation, review the [Documentation Contribution Guide](https://github.com/percona/pxc-docs/blob/8.0/contributing.md)
+

docs/release-notes/release-notes_index.md

@@ -1,5 +1,7 @@
 # Percona XtraDB Cluster {{vers}} release notes index
 
+* [Percona XtraDB Cluster 8.4.8-8 (2026-04-15)](8.4.8-8.md)
+
 * [Percona XtraDB Cluster 8.4.7-7 (2026-01-13)](8.4.7-7.md)
 
 * [Percona XtraDB Cluster 8.4.6-6 (2025-10-06)](8.4.6-6.md)

docs/templates/pdf_cover_page.tpl

@@ -7,5 +7,5 @@
 {% if config.site_description %}
 <h1>{{ config.site_description }}</h1>
 {% endif %} 
-<h2>8.4.7-7 (January 13, 2026)</h2>
+<h2>8.4.8-8 (April 15, 2026)</h2>
 <!--<h3>Percona Technical Documentation Team</h3>-->

mkdocs-base.yml

@@ -4,7 +4,7 @@ site_name: Percona XtraDB Cluster
 site_description: Documentation
 site_author: Percona LLC
 copyright: >-
-  <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>
+  <a href="https://www.percona.com/about">Percona LLC</a> and its affiliates &copy; 2026 — <a href="#" onclick="Osano.cm.showDrawer('osano-cm-dom-info-dialog-open')">Cookie Preferences</a>
 repo_name: percona/pxc-docs
 repo_url: https://github.com/percona/pxc-docs
 edit_uri: edit/8.4/docs/
@@ -172,6 +172,7 @@ nav:
   - get-help.md
   - Release notes:
       - Release notes index: release-notes/release-notes_index.md
+      - release-notes/8.4.8-8.md
       - release-notes/8.4.7-7.md
       - release-notes/8.4.6-6.md
       - release-notes/8.4.5-5.md

variables.yml

@@ -1,9 +1,9 @@
 # variables for HTML output
 
-release: '8.4.6-6'
+release: '8.4.8-8'
 version: '8.4'
 vers: '8.4' # we are going to use it instead of version
 pkg: 'pxc-84-lts'
-release_date: '2026-01-13'
-title_date: '2026-01-13'
+release_date: '2026-04-15'
+title_date: '2026-04-15'