Percona Server 5.1.57-12.8 Stable Release

Released on June 8, 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.

• 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: LaunchPad: #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 innodb_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)

For more information, please see the following links:

• Downloads: Binary distributions, Percona Software Repositories

• Installation instructions

• Consulting, support, training, and custom development

• Release notes

• Documentation

• Developer discussion group