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Percona Distribution for MySQL 8.0.40 using Percona Server for MySQL has been released

Percona Distribution for MySQL 8.0.40 using Percona Server for MySQL has been released on Thursday, January 02, 2025.

Try it out using the Installation guide.

Improvements and bug fixes provided by Oracle for MySQL 8.0.40 and included in Percona Server for MySQL are the following:

  • Changes in MySQL 8.0.33 caused queries using joins on InnoDB tables to perform worse because refactoring affected 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 Distribution for MySQL 8.0.40 using Percona Server for MySQL release notes.