JBoss A-MQ; how to use persistence store locking for master/slave in a Fabric

Issue

• In a Fabric, master/slave brokers are coordinated using a Zookeeper lock. If the Fabric ensemble is not available (e.g losing the ensemble quorum) the master/slave broker pair will become unavailable. How can we set up a master/slave broker pair that does not rely on fabric for its locking?