Percona Toolkit 2.2.16 is now available

Percona ToolkitPercona is pleased to announce the availability of Percona Toolkit 2.2.16, released on November 9, 2015. Percona Toolkit is a collection of advanced command-line tools to perform a variety of MySQL server and system tasks that are too difficult or complex for DBAs to perform manually. Percona Toolkit, like all Percona software, is free and open source.

This release is the current GA (Generally Available) stable release in the 2.2 series. It includes new features and bug fixes as well as continued preparation for MySQL 5.7 compatibility. Full details are below. Downloads are available here and from the Percona Software Repositories.

New Features:

  • 1491261: When using MySQL 5.6 or later, and innodb_stats_persistent option is enabled (by default, it is enabled), then pt-online-schema-change will now run with the --analyze-before-swap option. This ensures that queries continue to use correct execution path, instead of switching to full table scan, which could cause possible downtime. If you do not want pt-online-schema-change to run ANALYZE on new tables before the swap, you can disable this behavior using the --no-analyze-before-swap option.
  • 1402051: pt-online-schema-change will now wait forever for slaves to be available and not be lagging. This ensures that the tool does not abort during faults and connection problems on slaves.
  • 1452895: pt-archiver now issues ‘keepalive’ queries during and after bulk insert/delete process that takes a long time. This keeps the connection alive even if the innodb_kill_idle_transaction variable is set to a low value.

Bug Fixes:

  • 1488685: The --filter option for pt-kill now works correctly.
  • 1494082: The pt-stalk tool no longer uses the -warn option when running find, because the option is not supported on FreeBSD.

Details of the release can be found in the release notes and the 2.2.16 milestone on Launchpad. Bugs can be reported on the Percona Toolkit launchpad bug tracker.

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