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From "Robbie Gemmell (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-5450) [Java Broker] shared message group race between acquiring new messages and acking delivered messages can lead to concurrent delivery
Date Mon, 06 Jan 2014 16:09:51 GMT
Robbie Gemmell created QPID-5450:
------------------------------------

             Summary: [Java Broker] shared message group race between acquiring new messages
and acking delivered messages can lead to concurrent delivery
                 Key: QPID-5450
                 URL: https://issues.apache.org/jira/browse/QPID-5450
             Project: Qpid
          Issue Type: Bug
          Components: Java Broker
    Affects Versions: 0.24, 0.22
            Reporter: Robbie Gemmell
            Assignee: Robbie Gemmell
             Fix For: 0.27


When using shared message groups, there is a synchronization issue leading to a race between
acquiring new messages that are being added to the group causing a state change within the
group, and acking of the last message in the group, which can lead to concurrent delivery
of messages for the group.



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