If You Love It, Break It: Testing MySQL with the Random Query Generator by Philip Stoev (Sun Microsystems) The description is at: http://www.mysqlconf.com/mysql2009/public/schedule/detail/6363 Download the presentation slides (ppt) at http://assets.en.oreilly.com/1/event/21/If%20You%20Love%20It,%20Break%20It_%20Testing%20MySQL%20with%20the%20Random%20Query%20Generator%20Presentation.ppt

Random Query Generator is a new QA tool that generates pseudo-random queries targeted to exercise a specific part of the server being tested. It then executes those queries to check for crashes or assertions or to compare the results returned from two different servers (two versions, two different storage engines, optimizer flags, etc.). It is also able to execute queries against a replication master, constantly checking that the slave is OK and has not diverged.