B.6. Tungsten Replicator 4.0.2 GA (1 Oct 2015)

Tungsten Replicator 4.0.2 is a bugfix release that contains critical fixes and improvements to the Tungsten Replicator 4.0.1 release.

Known Issues

The following issues may affect the operation of Tungsten Clustering and should be taken into account when deploying or updating to this release.

  • Installation and Deployment

    • Under certain circumstances, the rsync process can randomly fail during the installation/ deployment process when using the staging method of deployment. The error code returned by rsync may be 12 or 23.

      The error is transient and non-specific and deployment should be retried.

      Issues: CONT-1343

  • Core Replicator

    • The replicator can run into OutOfMemory when handling very large Row-Based replication events. This can be avoided by setting --optimize-row-events=false.

    • The replicator can hit a MySQL lock wait timeout when processing large transactions.

    • The replicator can hit a MySQL lock wait timeout when processing large transactions.

      Issues: CONT-1106

Improvements, new features and functionality

  • Installation and Deployment

    • The tpm script will display a warning if NTP does not appear to be running.

      Issues: CONT-110

  • Core Replicator

    • The tungsten_provision_thl script can now provision heterogeneous replication from an RDS master or RDS read-replica.

      Issues: CONT-1028

Bug Fixes

  • Installation and Deployment

    • Fix issues with replicating from an SOR deployment into a standalone server. The same commands to replicate from a regular cluster will now work for replicating from a multi-site cluster.

      Issues: CONT-861

    • The tpm script could lock tables trying to inspect information_schema for MyISAM tables. The script will now look for MyISAM files in the datadir if possible.

      Issues: CONT-938

  • Core Replicator

    • The replicator could incorrectly parse binary logs that start with a timestamp on 1/1/1970 and cause errors on systems that use STRICT_TRANS_TABLES.

      Issues: CONT-869

    • The replicator could hang when transitioning from ONLINE to OFFLINE:ERROR. This could happen during the first attempt or following multiple repeated attempts.

      Issues: CONT-1055