Message FIFO order is not preserved at queue in network of brokers when network 
cable is unplugged
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                 Key: AMQ-2544
                 URL: https://issues.apache.org/activemq/browse/AMQ-2544
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.3.0
         Environment: java 1.6.17
spring 2.5.6
            Reporter: Antti Kallonen


We have a configuration like this: C1-B1-------B2-C2 and persistent queues 
enabled. We have also tried enabling the exclusive consumer feature. First 
client C1 starts to send messages to queue, and C2 reads the messages from 
queue. Then I remove the network plug on broker B1 severing the connection 
between the brokers. When I reconnect the cable all messages that were produced 
while the connection was lost get delivered, but their ordering is not FIFO. 
Some messages get delivered in wrong sequence, perhaps they are being lost and 
then resend?

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