This wiki entry http://www.percona.com/doc/percona-server/5.1/management/innodb_fast_index_renaming.html says "5.1.49-12.0: Not yet released externally" - maybe this feature is not really generally available and if so, should be documented clearly on the page.
This wiki entry http:// www.percona. com/doc/ percona- server/ 5.1/management/ innodb_ fast_index_ renaming. html says "5.1.49-12.0: Not yet released externally" - maybe this feature is not really generally available and if so, should be documented clearly on the page.