# MySQL-wsrep 8.0.42-26.23 Release Notes

## Changes in MySQL-wsrep 8.0.42-26.23 (2025-06-23)

Codership is pleased to announce a new GA release of Galera Cluster for MySQL 8.0, consisting of MySQL-wsrep 8.0.42 and wsrep API version 26.

This release incorporates all changes up to MySQL 8.0.42.

Galera Cluster 8.0 is available as targeted packages and package repositories for Debian 11 (Bullseye), and 12 (Bookworm), Ubuntu 20.04 LTS (Focal), 22.04 LTS (Jammy), and 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://www.galeracluster.com](https://www.galeracluster.com/) or <https://www.mariadb.com/> (as Codership has been acquired by MariaDB plc).

The source repositories and bug tracking are now on <https://github.com/codership/mysql-wsrep>

### Notable changes and fixes in MySQL-wsrep since the latest release 8.0.41-26.22:

* Added WSREP\_MODE\_APPLIER\_LOG\_WARNINGS, to print warnings when a replicated row fails foreign-key checks
* Added wsrep\_applier\_retry\_count, and if set > 0 has the secondary re-try writeset application up to n times instead of hard aborting on the first error (the default is 0)
* Fix heap-buffer-overflow crash on FK cascades into VARCHAR columns
* Replicated DELETE that loses its parent table is now forced single-thread to keep order
* Applier logs extra FK failure detail when WSREP\_MODE\_APPLIER\_LOG\_WARNINGS is enabled
* server\_uuid no longer saved as all-zeroes on first start with wsrep\_sync\_server\_uuid = ON
* FLUSH TABLES WITH READ LOCK now returns an error when the node is in a non-primary component instead of hanging
* Attempting TOI operations after an FTWRL desync now raises ER\_UNKNOWN\_COM\_ERROR instead of crashing the server

### 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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