Percona Server 5.5.10 (Release Candidate)

Percona Server release 5.5.10-20.1 is now available for download. This is a release candidate for the Percona Server 5.5 series. In addition to MySQL 5.5.10 now being the base version, here are the changes that have been made since Percona Server beta release 5.5.8-20.0:

New Features

• Added columns ROWS_EXAMINED, ROWS_SENT, and ROWS_READ to table PROCESSLIST and to the output of SHOW PROCESSLIST. (Laurynas Biveinis)

Variable Changes

• Old status variable innodb_row_lock_numbers was renamed to innodb_current_row_locks. (Yasufumi Kinoshita)
• Old system variable innodb_enable_unsafe_group_commit was deleted. The existing MySQL variable innodb_support_xa can be used instead. (Yasufumi Kinoshita)
• Old system variable log_warnings_silence was renamed to log_warnings_suppress. (Oleg Tsarev)
• Old system variable log_slow_timestamp_every was renamed to slow_query_log_timestamp_always. (Oleg Tsarev)
• Old system variable slow_query_log_microseconds_timestamp was renamed to slow_query_log_timestamp_precision. (Oleg Tsarev)
• Old system variable use_global_log_slow_control was renamed to slow_query_log_use_global_control. (Oleg Tsarev)
• Old system variable userstat_running was renamed to userstat. (Oleg Tsarev)
• Old system variable innodb_expand_import was renamed to innodb_import_table_from_xtrabackup. (Yasufumi Kinoshita)
• Old system variable innodb_auto_lru_dump was renamed to innodb_buffer_pool_restore_at_startup. (Yasufumi Kinoshita)
• Old system variable innodb_overwrite_relay_log_info was renamed to innodb_recovery_update_relay_log. (Yasufumi Kinoshita)
• Old system variable innodb_pass_corrupt_table was renamed to innodb_corrupt_table_action. (Yasufumi Kinoshita)

Bug Fixes

• Bug #724674 – Ported an updated version of the original implementation of the Remove Excessive Function Calls feature, which removes some fcntl calls to improve performance. (Oleg Tsarev)
• Bug #727704 – When using the Expand Table Import feature, importing .ibd files created on MySQL 5.0 or Percona Server versions prior to 5.1.7 could crash the server. (Yasufumi Kinoshita)
• MySQL bugs 56433 and 51325 – These MySQL bugs have been fixed in Percona Server. (Yasufumi Kinoshita)

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