Hey Doug,
Can you confirm the PRIMARY KEY in this case is an auto-increment? If so, PXC modifies the auto_increment_increment and auto_increment_offset settings depending on the cluster size to avoid such collisions as these (assuming you have wsrep_auto_increment_control = ON, which is the default: http://www.percona.com/doc/percona-xtradb-cluster/5.5/wsrep-system-index.html#wsrep_auto_increment_control). I'm thinking this is a bug related to that.
Hey Doug, increment and auto_increment_ offset settings depending on the cluster size to avoid such collisions as these (assuming you have wsrep_auto_ increment_ control = ON, which is the default: http:// www.percona. com/doc/ percona- xtradb- cluster/ 5.5/wsrep- system- index.html# wsrep_auto_ increment_ control). I'm thinking this is a bug related to that.
Can you confirm the PRIMARY KEY in this case is an auto-increment? If so, PXC modifies the auto_increment_