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Percona Distribution for MySQL 8.4.8 using Percona XtraDB Cluster (2026-04-)

Percona Distribution for MySQL is more than just a version of MySQL; it is a comprehensive solution that combines Percona Server for MySQL with additional tools to create a cohesive environment. This distribution is reliable, scalable, and secure, ensuring that all components have been tested to work seamlessly together. You can choose from two download options: one that uses Percona Server for MySQL and another that utilizes Percona XtraDB Cluster. Refer to Install Percona Distribution for MySQL.

This release is based on Percona XtraDB Cluster 8.4.8-8.

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.

Supplied components

Review each component’s release notes for What’s new, improvements, or bug fixes. The following is a list of the components supplied with the Percona XtraDB Cluster-based variation of the Percona Distribution for MySQL:

Component Version Description
Percona XtraBackup 8.4.0-5 An open-source hot backup utility for MySQL-based servers that doesn’t lock your database during the backup.
HAProxy 2.8.18 A high-availability and load-balancing solution for Percona XtraDB Cluster. This is a default proxy.
ProxySQL 2.7.3 A high performance, high-availability, protocol-aware proxy for MySQL.
Percona Toolkit 3.7.1 The set of scripts to simplify and optimize database operation.
replication_manager.sh 1.0 A tool to manage multi-source replication between multiple Percona XtraDB Cluster clusters.