Percona Server moved to 5.5-20.2stable "C8H10N4O2"

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Percona Server moved to
Code name:
Valentine Gostev
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1 Alexey Kopytov, 2 Fred Linhoss, 1 Oleg Tsarev
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7 Fix Released

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Release notes 

Percona Server Percona Server 5.5.11-20.2 is now available for download, including an experimental build for MacOS.

New Features

HandlerSocket, a NoSQL plugin for MySQL, has been updated to the latest stable version as April 11th, 2011.
InnoDB fast index creation now works with mysqldump, ALTER TABLE and OPTIMIZE TABLE. (Alexey Kopytov)

Variable Changes

Variable innodb_extra_rsegments was removed because the equivalent, ‘innodb_rollback_segments’, has been implemented in MySQL 5.5. (Yasufumi Kinoshita)

Bug Fixes

Bug #757749 – Using ALTER TABLE to convert an InnoDB table to a MEMORY table could fail due to a bug in innodb_expand_fast_index_creation.patch. (Alexey Kopytov)
Bug #764395 – InnoDB crashed with an assertion failure when receiving a signal on pwrite(). The problem was that InnoDB I/O code was not fully conforming to the standard on POSIX systems. Calls to fsync(), pread(), and pwrite() can be interrupted by a signal. In such cases, InnoDB would crash with an assertion failure, rather than just restarting the interrupted call. (Alexey Kopytov)
Bug #766236 – A crash was occurring in some cases when innodb_lazy_drop_table was enabled with very large buffer pools. (Yasufumi Kinoshita)
Bug #733317 – SYS_STATS internal table of XtraDB has been expanded for supporting ‘innodb_stats_method’ from InnoDB-plugin. (Yasufumi Kinoshita)


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0 blueprints and 7 bugs targeted

Bug report Importance Assignee Status
733317 #733317 SYS_STATS internal table should be expanded for the official innodb_stats_method support 3 High   10 Fix Released
766236 #766236 Crash with innodb_lazy_drop_table=ON 3 High   10 Fix Released
589491 #589491 Add Rows_examined into SHOW PROCESSLIST 4 Medium Oleg Tsarev  10 Fix Released
1262651 #1262651 os_file_fsync() should handle fsync() returning EINTR 4 Medium   10 Fix Released
727966 #727966 documentation on response_time_distribution feature is wrong 5 Low Fred Linhoss  10 Fix Released
706307 #706307 Document new status variables 1 Undecided Fred Linhoss  10 Fix Released
764395 #764395 MySQL bug #60788: InnoDB crashes with an assertion failure when receiving a signal on pwrite() 1 Undecided Alexey Kopytov  10 Fix Released
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