Code review comment for lp:~vlad-lesin/percona-server/bugs-1008609-1008278

Vlad,

Please recommit and provide more descriptive revision comments, mentioning all three bug numbers, and the problem description. Here's an example of a good revision comment: http://bazaar.launchpad.net/~laurynas-biveinis/percona-server/bug951588-5.1/revision/447

It would also be great to have a replication test to verify bug #1008278 is indeed fixed by this patch. It's not clear why only Master-Master replication was affected, could it be that SQL thread always crashes with userstat enabled? In both cases a test case should be rather trivial.