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Percona Server 5.1.57-12.8

Percona is glad to announce the release of Percona Server 5.1.57-12.8 on June 8th, 2011 (Downloads are available here and from the Percona Software Repositories).

Percona Server 5.1.57-12.8 is now the current stable release in the 5.1 series. It is is based on MySQL 5.1.57.

Bug Fixes

  • Fixed InnoDB I/O code so that the interrupted system calls are restarted if they are interrupted by a signal. InnoDB I/O code was not fully conforming to the standard on POSIX systems, causing a crash with an assertion failure when receiving a signal on pwrite(). Bug Fixed: LP #764395 / MySQL bug #60788 (A. Kopytov).
  • The maximum value for innodb_use_purge_threads has been corrected to 32 (maximum number of parallel threads in a parallelized operation). The Dedicated Purge Thread patch accepted a value up to 64 for the innodb_use_purge_thread variable, leading to an assertion failure for greater than the actual maximum. Bug Fixed: #755017 (L. Biveinis).
  • Increased the treshold of 600 seconds during the import, which was causing issues when importing big tables. Bug Fixed #684829 (Y. Kinoshita).
  • The innodb_use_sys_stats_table feature could cause a crash under high concurrency Bug Fixed #791092 (Y. Kinoshita).

Other Changes

  • HandlerSocket, a NoSQL plugin for MySQL, has been updated to the latest stable version as April 11th, 2011.
  • The list of authors of the plugins used have been corrected. Bug Fixes: #723050 (Y. Kinoshita).

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This documentation is developed in Launchpad as part of the Percona Server 5.1.
If you spotted inaccuracies, errors, don't understood it or you think something is missing or should be improved, please file a bug.
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