Percona XtraDB Cluster 8.0.40-31 (2025-01-20)¶

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Percona XtraDB Cluster 8.0.40-31 includes all the features and bug fixes available in Percona Server for MySQL 8.0.40-31.

Release highlights¶

Percona XtraDB Cluster is based on Percona Server for MySQL. Find a complete list of improvements and bug fixes in the Percona Server for MySQL 8.0.40-31 (2024-12-30) release notes.

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.
An unexpected exit ocurred if the server tried to update columns altered with NULL as the default value using the INSTANT algorithm.
An unexpected exit during DELETE or UPDATE operations if a column, using the INSTANT algorithm, was dropped.
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 8.0.40 Release Notes.

Bug fixes¶

PXC-4558: During the post-processing step in wsrep_sst_common, the script connected to mysql-server to check replication status through the upgrade_socket. Since mysql-server was started with --skip-networking, mysql could only connect to mysql-server with socket. When the host was set to 127.0.0.1 in .mylogin.cnf, the post-processing step failed.

Additional resources¶

Download product binaries, packages, and tarballs at Percona Product Downloads

Install Percona XtraDB Cluster

The Percona XtraDB Cluster GitHub repository

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Last update: 2025-01-06