Comment 1 for bug 1165958

it only happens on 5.5, not on 5.6.

fixed in http://bazaar.launchpad.net/~codership/codership-mysql/wsrep-5.5/revision/3973

to reproduce bug, the table specification should be MyISAM instead of InnoDB.
```
CREATE TABLE `throttle_from_instance` (
  `_instance` char(60) NOT NULL DEFAULT '',
  `_from` char(60) NOT NULL DEFAULT '',
  `_expire` int(10) unsigned NOT NULL DEFAULT '0',
  UNIQUE KEY `_instance` (`_instance`),
  KEY `_expire` (`_expire`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
```