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From "Johnny (JIRA)" <>
Subject [jira] Reopened: (AMQ-1936) Duplicate message received when producing and consuming concurrently
Date Mon, 29 Sep 2008 21:31:52 GMT


Johnny reopened AMQ-1936:

    Regression: [Broken Unit Test]

Hi Rob,

I've downloaded the 5.3 snapshot and re-run the test against it and it still has a duplicate
message failure.

Snapshot was :

Would you expect the fix to be included in this snapshot?


> Duplicate message received when producing and consuming concurrently
> --------------------------------------------------------------------
>                 Key: AMQ-1936
>                 URL:
>             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
>            Assignee: Rob Davies
>             Fix For: 5.3.0
>         Attachments: activemq-duplicate-msg-check.xml,,
> Hello,
> 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 failure.
> 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

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