14 DAY TRIAL // MySQL, a widely used and fast client and server implementation that consists of a server daemon (mysqld) and many different client programs/libraries, has just reached version 5.5.19.
MySQL 5.5.19 only fixes a series of bugs that plagued the previous versions. The most important fix is for InnoDB Storage Engine. An incorrect deadlock could occur on a server doing a substantial amount of change buffering for DML operations, particularly DELETE statements. This is now corrected.
Among other bugs fixed here are a few important ones:
· Rounding DBL_MAX returned DBL_MAX, not 'inf'; · mysql_upgrade did not upgrade the system tables or create the mysql_upgrade_info file when run with the --write-binlog or --skip-write-binlog option. This is no longer the case; · If a plugin was uninstalled, thread local variables for plugin variables of string type with PLUGIN_VAR_MEMALLOC flag were not freed; · Deadlock could occur when these four things happened at the same time: 1) An old dump thread as waiting for the binary log to grow. 2) The slave server that replicates from the old dump thread tried to reconnect. During reconnection, the new dump thread tried to kill the old dump thread. 3) A KILL statement tried to kill the old dump thread. 4) An INSERT statement caused a binary log rotation.
Download MySQL 5.5.19 right now from Softpedia.