Percona is glad to announce the release of Percona Server 5.5.19-24.0 on January 13th, 2012 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.19, including all the bug fixes in it, Percona Server 5.5.19-24.0 is now the current stable release in the 5.5 series. All of Percona ‘s software is [...]
It is no secret that bugs related to multithreading–deadlocks, data races, starvations etc–have a big impact on application’s stability and are at the same time hard to find due to their nondeterministic nature. Any tool that makes finding such bugs easier, preferably before anybody is aware of their existence, is very welcome.
The latest Percona Server release has one new feature: now MEMORY tables can have BLOB and TEXT columns, and VARCHAR columns will not waste space due to implicit extension to CHAR.
Part of the InnoDB duties, being an MVCC-implementing storage engine, is to get rid of–purge–the old versions of the records as they become obsolete. In MySQL 5.1 this is done by the master InnoDB thread. Since then, InnoDB has been moving towards the parallelized purge: in MySQL 5.5 there is an option to have a [...]