duplicate dispatch to durable sub with concurrent send transaction commit and 
activate
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                 Key: AMQ-3805
                 URL: https://issues.apache.org/jira/browse/AMQ-3805
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.5.1
            Reporter: Gary Tully
            Assignee: Gary Tully
             Fix For: 5.6.0


A durable sub can get duplicate message dispatches when a large send 
transaction is committing and the subscription is activated.
The completion of the send transaction does a dispatch with the new messages 
already in the store. An activate does a dispatch from the store. The result 
can be duplicate dispatches to the subs pending list. The problem is the reset 
of the audit during activation. The audit should suppress the duplicate 
dispatch.

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