wsrep-enabled MySQL (previously MySQL/Galera cluster) can use wsrep replication providers, such as Galera, to form a cluster. wsrep API is an abstract replication interface that supports global transaction ID, true multi-master capability, conflict detection and resolution, and parallel applying and is transparent to triggers, stored procedures, and functions by replicating only final transaction results. Only the InnoDB storage engine and DDL commands are supported by this patch.
Release Notes: This is a major bugfix and maintenance release. Upgrading is recommended. It fixed foreign keys support (multiple issues), a possible crash in tables without a primary key but with a unique secondary key, a crash with DDL in multi-statement transactions, a blocking problem in RSU DDL, a failure of MySQL slaves to start if no wsrep provider was loaded. It added automatic GTID recovery after a crash by mysqld_safe, xtrabackup SST support, and an update to MySQL 5.5.28.
Release Tags: Stable, Major
Tags: DBMS, Cluster