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https://issues.apache.org/jira/browse/QPID-573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Ritchie closed QPID-573.
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Resolution: Fixed
Closed as there is a test and commits to both M2 and trunk
> race condition between rollback() and the dispatcher thread in the java client
> ------------------------------------------------------------------------------
>
> Key: QPID-573
> URL: https://issues.apache.org/jira/browse/QPID-573
> Project: Qpid
> Issue Type: Bug
> Components: Java Client
> Affects Versions: M2
> Reporter: Rafael H. Schloming
> Assignee: Aidan Skinner
> Fix For: M3
>
>
> SVN change 572751 fixes a rather subtle race condition in the java client
> implementation of rollback() that is responsible for one of the intermittent
> failure modes of TransactedTest.
> Prior to this change it was possible for the cleanup code in rollback() to
> occasionally miss a message because the dispatcher thread in AMQSession holds
> the message for a short time after extracting it from _queue and prior to
> dispatching it to a consumer. If the rollback code runs during this period,
> the prefetched message being held in the dispatcher thread is erroneously
> delivered despite being rolled back.
> I suspect this race condition also occurs on the M2 branch as well, so it may
> be worth merging this fix to the branch. Placing a Thread.sleep(500) as the
> first line in the dispatcher thread and running TransactedTest should
> consistently reproduce the issue if it exists.
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