Percona Server 5.1.55-12.6

Percona Server version 5.1.55-12.6 is now available for download. It is now the current stable release version.

Changes

• Fixed compiler warnings in both the core server and in XtraDB. (Alxey Kopytov, Yasufumi Kinoshita)

Bugs Fixed

• Bug #602047 – The ROWS_READ columns of TABLE_STATISTICS and INDEX_STATISTICS were not properly updated when a query involved index lookups on an InnoDB table. (Yasufumi Kinoshita)
• Bug #707742 – The server could crash when trying to import a table which had not been previously prepared using xtrabackup --prepare --export. Also, on servers with huge buffer pools, adding or removing an index even on an empty InnoDB table could take a long time due to excessive locking when innodb_dict_size_limit was non-zero. Locking was relaxed to alleviate this. (Yasufumi Kinoshita)
• Bug #724674 – Ported an updated version of the original implementation of the Excessive Function Calls, which removes some fcntl calls to improve performance.  (Oleg Tsarev)

For more information, please see the following links:

• Downloads — binary distributions and Percona Software Repositories
• Installation instructions
• Consulting, support, training, and custom development
• Release notes
• Documentation
• Developer discussion group