Percona XtraDB Cluster 5.5.34-23.7.6

Percona is glad to announce the release of Percona XtraDB Cluster on November 4th, 2013. Binaries are available from downloads area or from our software repositories.

This is an General Availability release. We did our best to eliminate bugs and problems during the testing release, but this is a software, so bugs are expected. If you encounter them, please report them to our bug tracking system.

Bugs fixed

Fixed the issues with upgrade on Debian caused by debian-start script. Bug fixed #1112363.

Adding the AUTO_INCREMENT column to a table would result in data inconsistency because different nodes use different auto_increment_offset. Bug fixed #587170.

LOAD DATA INFILE was not replicating properly in cluster. Bug fixed #1206129.

After a COMMIT processing was interrupted (e.g. certification failure) it didn’t always release transactional MDL locks, which could lead to server deadlock while performing DDL. Bug fixed #1212955.

pc.checksum option was enabled by default, although its purpose was just to help with debugging. Bug fixed #1229107.

Server startup isn’t interrupted if the /var/lock/subsys/mysql file was not cleaned up by the init script. Bug fixed #1231067.

State Snapshot Transfer cleanup of existing data directory is now configurable with a cpat parameter. Bug fixed #1231121.

Handler command and concurrent DDL could cause node hanging. The problem would happen when a handler session was aborted due to replication conflict. Bug fixed #1233353.

Command service mysql status was not producing valid exit codes, which could break the configuration management systems. Bug fixed #1237021.

Option wsrep-new-cluster could lead to server crash. Bug fixed #1238331.

No key information was provided for DROP VIEW TOI statement. Bug fixed #1240040.

innodb_locks_unsafe_for_binlog option is no longer checked because slave threads are READ-COMMITTED by default. Bug fixed #1240112.

If IO cache contained the Query_log_event, database pointer would be reset during transaction replay. This could lead to “1046 No database selected.” error when next statement is issued. Bug fixed #1241760.

After test shutting down all the nodes indicate that all write set handlers were not released. Bug fixed #1244661.

MDL locks were not released properly on slaves at commit time. Bug fixed #1245333.

Implemented number of thread pool scheduler fixes. Bug fixed #1240500.

Running FLUSH STATUS would zero-up wsrep_cluster_size and wsrep_local_index variables. Bug fixed #1232789.

Fixed the dependency conflict between the Percona-XtraDB-Cluster-shared and Percona-Server-shared-compat packages. Bug fixed #1084309.

Fixed the memory leak in the wsrep_write_cache() function. Bug fixed #1230160.

Xtrabackup SST Configuration implementation added in Percona XtraDB Cluster 5.5.33-23.7.6 has been renamed xtrabackup-v2, so wsrep_sst_method =xtrabackup will use xtrabackup implementation before 5.5.33-23.7.6 and will be compatible with older Percona XtraDB Cluster versions. Bug fixed #1228618.

Support for SSL encryption for just the key and crt files as implemented in Galera can be enabled with encrypt=3 option. This has been implemented in 5.5.34-23.7.6 for compatibility with Galera. Bug fixed #1235244.

Other bugs fixed: bug fixed #1244741, bug fixed #1244667, bug fixed #1243150, bug fixed #1232890, bug fixed #999492, bug fixed #1245769, bug fixed #1244100.

Based on Percona Server 5.5.34-32.0 including all the bug fixes in it, Galera Replicator and on Codership wsrep API 5.5.34-25.9, Percona XtraDB Cluster 5.5.34-23.7.6 is now the current stable release. All of Percona‘s software is open-source and free.

Percona XtraDB Cluster Errata can be found in our documentation.

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