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From "David Sitsky (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-1452) Duplicate messages dispatched when using AMQ Store
Date Tue, 09 Oct 2007 05:22:23 GMT
Duplicate messages dispatched when using AMQ Store
--------------------------------------------------

                 Key: AMQ-1452
                 URL: https://issues.apache.org/activemq/browse/AMQ-1452
             Project: ActiveMQ
          Issue Type: Bug
          Components: Message Store
    Affects Versions: 5.0.0
            Reporter: David Sitsky
            Priority: Critical
             Fix For: 5.0.0
         Attachments: duplicate.log

This issue was originally reported on activemq-user here: http://www.nabble.com/Duplicate-message-delivered-to-consumers-on-queue-with-kaha-persistence-tf4560327s2354.html.

When I initially reported this issue, Rob suggested to not use Kaha persistence, but using
the AMQ store.  This seemed to resolve the issue.

Unfortunately, I have seen another situation where a duplicate message is being re-delivered,
it turns out to the same consumer.  I have tried in vain to create a unit test to reproduce
this, but have been unable to do so.

The offending message ID is ID:tamarama-63606-1191905255404-2:2:3:3:1, and if you look at
the attached debug trace, you can see it being sent to a queue, read from a queue, and then
being dispatched a second time.  The same worker thread in this case was the producer and
the consumer of message.

This issue does not occur when persistence is not enabled.

This is seen with revision 583015.

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