Percona Server for MySQL 5.5Percona announces the release of Percona Server for MySQL 5.5.60-38.12 on May 18, 2018. Based on MySQL 5.5.60, including all the bug fixes in it, Percona Server for MySQL 5.5.60-38.12 is now the current stable release in the 5.5 series.

Percona Server for MySQL is open-source and free. Downloads are available here and from the Percona Software Repositories.

Bugs Fixed
  • mysqldump utility with --innodb-optimize-keys option was incorrectly working with foreign keys pointing to the same table, producing invalid SQL statements. Bugs fixed #1125 and #3863.
  • A typo in plugin.cmake file prevented to compile plugins statically into the server. Bug fixed #3871 (upstream #89766).
  • Using -DWITHOUT_<PLUGIN>=ON CMake variable to exclude a plugin from the build didn’t work for some plugins, including a number of storage engines. Bug fixed #3901.
  • A fix was introduced to remove GCC 8 compilation warnings for the Percona Server build. Bug fixed #3950.
  • A code clean-up was done to fix compilation warnings and errors specific for clang 6. Bug fixed #3893 (upstream #90111).
  • Percona Server Debian packages description included reference to /etc/mysql/my.cnf file, which is not actually present in these packages. Bug fixed #2046.
  • A clean-up in Percona Server binlog-related code was made to avoid uninitialized memory comparison. Bug fixed #3925 (upstream #90238).
  • The temporary file I/O was not instrumented for Performance Schema. Bug fixed #3937 (upstream #90264).A key_block_size value was set automatically by the Improved MEMORY Storage Engine, which resulted in warnings when changing the engine type to InnoDB, and constantly growing key_block_size during alter operations. Bugs fixed  #3936, #3940, and #3943.

Other bugs fixed: #3767 “Fix compilation warnings/errors with clang”, #3778 “5.5 Tree received Percona-TokuBackup submodule where it should not”, #3794 “MTR test main.percona_show_temp_tables_stress does not wait for events to start”,  #3798 “MTR test innodb.percona_extended_innodb_status fails if InnoDB status contains unquoted special characters”, and #3926 “Potentially truncated bitmap file name in log_online_open_bitmap_file_read_only() (storage/innobase/log/log0online.cc)”.

Find the release notes for Percona Server for MySQL 5.5.60-38.12 in our online documentation. Report bugs in the Jira bug tracker.