To add to #11,
on 5.6 node, even with compat config options and PA off, I see
2013-11-21 10:08:29 3140 [Warning] WSREP: trx protocol version: 2 does not match certification protocol version: 3 2013-11-21 10:08:29 3140 [Warning] WSREP: trx protocol version: 2 does not match certification protocol version: 3
So, there may be some protocol level violation that we are facing here.
To add to #11,
on 5.6 node, even with compat config options and PA off, I see
2013-11-21 10:08:29 3140 [Warning] WSREP: trx protocol version: 2 does not match certification protocol version: 3
2013-11-21 10:08:29 3140 [Warning] WSREP: trx protocol version: 2 does not match certification protocol version: 3
So, there may be some protocol level violation that we are facing here.