.. rn:: 5.6.22-25.8 ====================================== |Percona XtraDB Cluster| 5.6.22-25.8 ====================================== Percona is glad to announce the release of |Percona XtraDB Cluster| 5.6 on March 5th 2015. Binaries are available from `downloads area `_ or from our :doc:`software repositories `. Based on `Percona Server 5.6.22-72.0 `_ including all the bug fixes in it, `Galera Replicator 3.9 `_ and on `Codership wsrep API 25.8 `_ is now the current **General Availability** release. All of |Percona|'s software is open-source and free, all the details of the release can be found in the `5.6.22-25.8 milestone `_ at Launchpad. Bugs fixed ========== :ref:`XtraBackup SST ` wouldn't stop when |MySQL| was ``SIGKILLed``. This would prevent |MySQL| to initiate a new transfer as port 4444 was already utilized. Bug fixed :bug:`1380697`. :file:`wsrep_sst_xtrabackup-v2` script was causing |innobackupex| to print a false positive stack trace into the log. Bug fixed :bug:`1407599`. |MyISAM| DDL (``CREATE/DROP``) isn't replicated any more when :variable:`wsrep_replicate_myisam` is ``OFF``. Note, for older nodes in the cluster, :variable:`wsrep-replicate-myisam` should work since the TOI decision (for MyISAM DDL) is done on origin node. Mixing of non-MyISAM and MyISAM tables in the same DDL statement is not recommended with :variable:`wsrep_replicate_myisam` ``OFF`` since if any table in list is |MyISAM|, the whole DDL statement is not put under TOI (total order isolation). Bug fixed :bug:`1402338`. :variable:`gcache.mem_size` has been deprecated. A warning will now be generated if the variable has value different than ``0``. Bug fixed :bug:`1392408`. ``stderr`` of SST/Innobackupex is logged to syslog with appropriate tags if ``sst-syslog`` is in ``[sst]`` or ``[mysqld_safe]`` has syslog in :file:`my.cnf`. This can be overridden by setting the :variable:`sst-syslog` to ``-1`` in ``[sst]``. Bug fixed :bug:`1399134`. ``clustercheck`` can now check if the node is ``PRIMARY`` or not, to allow for synced nodes which go out of ``PRIMARY`` not to take any writes/reads. Bug fixed :bug:`1403566`. |SST| will now fail early if the :file:`xtrabackup_checkpoints` is missing on the joiner side. Bug fixed :bug:`1405985`. ``socat`` utility was not properly terminated after a timeout. Bug fixed :bug:`1409710`. When started (without bootstrap), the node would hang if it couldn't find a primary node. Bug fixed :bug:`1413258`. 10 seconds timeout in :ref:`xtrabackup_sst` script was not enough for the joiner to delete existing files before it started the socat receiver on systems with big ``datadir``. Bug fixed :bug:`1413879`. Non booststrap node could crash while attempting to perform ``table%cache`` operations with the ``BF applier failed to open_and_lock_tables`` warning. Bug fixed :bug:`1414635`. |Percona XtraDB Cluster| 5.6 would crash on ``ALTER TABLE`` / ``CREATE INDEX`` with ``Failing assertion: table->n_rec_locks == 0``. Bug fixed :bug:`1282707`. Variable length arrays in WSREP code were causing debug builds to fail. Bug fixed :bug:`1409042`. Race condition between donor and joiner in :ref:`xtrabackup_sst` has been fixed. This caused :ref:`XtraBackup SST ` to fail when joiner took longer to spawn the second listener for SST. Bug fixed :bug:`1405668`. Signal handling in ``mysqld`` has been fixed for SST processes. Bug fixed :bug:`1399175`. SST processes are now spawned with ``fork/exec`` instead of ``posix_spawn`` to allow for better cleanup of child processes in event of non-graceful termination (``SIGKILL`` or a crash etc.). Bug fixed :bug:`1382797`. :variable:`wsrep_local_cached_downto` would underflow when the node on which it is queried had no writesets in gcache. Bug fixed :bug:`1262179`. A typo in :variable:`wsrep_provider_options` could cause an unhandled exception. Bug fixed :githubbug:`215`. Interrupted IST would result in ``HA_ERR_KEY_NOT_FOUND`` error in subsequent IST. Bug fixed :githubbug:`210`. ``garb`` logger was showing incorrect error message. Bug fixed :githubbug:`168`. Other bugs fixed: :bug:`1275814`. Known Issues ============ For those affected by crashes on donor during SST due to backup locks (:bug:`1401133`), please add the following to your :file:`my.cnf` configuration file: :: [sst] inno-backup-opts='--no-backup-locks' option as a workaround to force ``FLUSH TABLES WITH READ LOCK`` (**NOTE:** This workaround will is available only if you're using |Percona XtraBackup| 2.2.9 or newer.). Or as an alternative you can set your environment variable ``FORCE_FTWRL`` to ``1``. Help us improve quality by reporting any bugs you encounter using our `bug tracking system `_. As always, thanks for your continued support of Percona!