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Percona Server for MySQL 8.4.3-3 (2024-12-18)

Get started with Quickstart Guide for Percona Server for MySQL.

Percona Server for MySQL 8.4.3-3 includes all the features and bug fixes available in the MySQL 8.4.3 Community Edition in addition to enterprise-grade features developed by Percona.

Release highlights

Improvements and bug fixes introduced by Oracle for MySQL 8.4.3 and included in Percona Server for MySQL are the following:

  • The query SELECT * FROM sys.innodb_lock_waits; now fetches only two locks per wait, instead of scanning all locks twice, improving performance under heavy load. Additionally, primary keys have been added to DATA_LOCKS and DATA_LOCK_WAITS. (Bug #100537, Bug #31763497)

  • Changes in MySQL 8.0.33 caused performance degradation for queries using joins on InnoDB tables due to refactoring of functions that were previously inline.

  • The server crashed when it tried to update columns altered with NULL as the default value using the INSTANT algorithm.

  • The server could crash during DELETE or UPDATE operations if a column was dropped using the INSTANT algorithm.

  • Importing a table created under a different sql_mode sometimes led to schema mismatches, risking data corruption in secondary indexes. The fix now includes integrity checks on the imported tablespace.

  • Rebuilding tables with secondary indexes required more file I/O operations compared to MySQL 8.0.26, which slowed down query performance.

Find the complete list of bug fixes and changes in the MySQL 8.4.3 release notes.

Bug fixes

  • PS-9382: After an upgrade, the telemetry daemon ran continuously. The telemetry daemon was manually stopped and the service was disabled. Adding percona_telemetry_disable=1 to the configuration file and restarting MySQL led to the server becoming unresponsive and required a forced termination.

  • PS-9453: The percona_telemetry tool caused a long wait on COND_thd_list if the root user is absent.

Additional resources