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From "Johnny (JIRA)" <>
Subject [jira] Created: (AMQ-1936) Duplicate message received when producing and consuming concurrently
Date Mon, 15 Sep 2008 22:28:52 GMT
Duplicate message received when producing and consuming concurrently

                 Key: AMQ-1936
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.1.0
         Environment: Dell Precision with 2.13GHz dual core, 3.25 GB RAM running on Windows
XP SP2. Test is running on JDK1.5.0_12.
            Reporter: Johnny
         Attachments: activemq-duplicate-msg-check.xml,,


We are receiving duplicate messages when processing a moderate numbers of messages ( ~60,000
), I have attached a JUNIT test which re-produces the issue on my machine with the broker
configuration file used. Please note that It does take a few minutes to generate the test

The test needs to be run with increased heap memory using the JMV option -Xmx512m

We initially found the issue using the IONA Fuse version which would produce the same
issue at 30,000 messages and without persistence storage. I later downloaded the ActiveMQ
5.1.0 version which would pass at 30,000 but fail at 60,000.

It is causing major issues for our project and hindering our application from going to production.

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