MySQL-wsrep 8.4.8-26.26 Release Notes

Changes in MySQL-wsrep 8.4.8-26.26 (2026-02-18)

MariaDB is pleased to announce the first LTS release of Galera Cluster for MySQL 8.4, consisting of MySQL-wsrep 8.4.8 and wsrep API version 26.

This release incorporates all changes up to MySQL 8.4.8.

Galera Cluster 8.4 is available as targeted packages and package repositories for Debian 11 (Bullseye), and 12 (Bookworm), Ubuntu 22.04 LTS (Jammy), and Ubuntu 24.04 LTS (Noble), RHEL 8, and 9. Obtaining packages using a package repository removes the need to download individual files and facilitates the deployment and upgrade of Galera nodes.

This and future releases will be available from https://mariadb.com/galera-downloads/.

Notable changes and fixes in MySQL-wsrep in 8.4.8-26.26:

• Configuration variable wsrep_slave_fk_checks is deprecated and setting has no effect. Setting wsrep_slave_fk_checks=OFF will easily result in inconsistency in any setup where there are cascading relations.

• Applier will now ignore binlog events it does not recognize

Known Issues:

• InnoDB tablespaces outside of the data directory are not supported, as they may not be copied over during SST.

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