Major Description
Shared master/slave setup, described here http://activemq.apache.org/shared-file-system-master-slave.html
Scenario:
1. Transacted consumer receives a message
2. Transacted consumer disconnects prior to committing
3. Transacted consumer #2 receives the same message.
Normally consumer #2 sees that message as getJMSRedelivered() = true. However, if the broker fails and another takes over from the data dir between step 1 and 3, the redelivery is set as false - even though a consumer has, in fact, seen the message before. See attached unit test.
