Percona Server for MySQL 5.6.42-84.2

Percona is glad to announce the release of Percona Server for MySQL 5.6.42-84.2 on November 29, 2018 (Downloads are available here and from the Percona Software Repositories).

Based on MySQL 5.6.42, including all the bug fixes in it, Percona Server for MySQL 5.6.42-84.2 is the current GA release in the Percona Server for MySQL 5.6 series. All of Percona‘s software is open-source and free.


  • #4790: Improve user statistics accuracy

Other improvements

  • #4881: Add LLVM/clang 7 to Travis-CI

Bugs Fixed

  • Slave replication could break if upstream bug #74145 (FLUSH LOGS improperly disables the logging if the log file cannot be accessed) occurred in master. Bug fixed #1017 (Upstream #83232).
  • The binary log could be corrupted when the disk partition used for temporary. files (tmpdir system variable) had little free space. Bug fixed #1107 (Upstream #72457).
  • PURGE CHANGED_PAGE_BITMAPS did not work when the innodb_data_home_dir system variable was used. Bug fixed #4723.
  • Setting the tokudb_last_lock_timeout variable via command line could cause server to stop working when the actual timeout took place. Bug fixed #4943.
  • Dropping TokuDB table with non-alphanumeric characters could lead to a crash. Bug fixed #4979.

Other bugs fixed

  • #4781: sql_yacc.yy uses SQLCOM_SELECT instead of SQLCOM_SHOW_XXXX_STATS
  • #4529: MTR: index_merge_rocksdb2 inadvertently tests InnoDB instead of MyRocks
  • #4746: Revert our fix for PS-3851 (Percona Ver 5.6.39-83.1 Failing assertion: sym_node->table != NULL)
  • #4773: Percona Server sources can’t be compiled without server
  • #4785: Setting version_suffix to NULL leads to handle_fatal_signal (sig=11) in Sys_var_version::global_value_ptr
  • #4813: Using flush_caches leads to SELinux denial errors

Find the release notes for Percona Server for MySQL 5.6.42-84.2 in our online documentation. Report bugs in the Jira bug tracker.

Contact Us

For free technical help, visit the Percona Community Forum.
To report bugs or submit feature requests, open a JIRA ticket.
For paid support and managed or professional services, contact Percona Sales.