Released on April 4, 2011 (Downloads are available here and from the Percona Software Repositories.)
Percona Server 5.5.10-20.1 is a release candidate.
- Added columns ROWS_EXAMINED, ROWS_SENT, and ROWS_READ to table PROCESSLIST and to the output of SHOW PROCESSLIST. (Laurynas Biveinis)
- 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 #724674 - Ported an updated version of the original implementation of the Remove Excessive Function Calls (fcntl) 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)
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