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Percona Server for MySQL 8.4.3-3 has been released

Percona Server for MySQL 8.4.3-3 has been released on Wednesday, December 18, 2024.

Try it out using the Quickstart guide.

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.

Learn more in Percona Server for MySQL 8.4.3-3 release notes.