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From "Timothy Bish (Closed) (JIRA)" <>
Subject [jira] [Closed] (AMQ-2780) ActiveMQ not preserving Message Order
Date Wed, 05 Oct 2011 22:20:30 GMT


Timothy Bish closed AMQ-2780.

    Resolution: Cannot Reproduce
      Assignee: Timothy Bish  (was: Rob Davies)

I tried to reproduce by creating a test case based on the sample code provided.  Was not able
to reproduce after much trying.  If the reporter can modify the test case to produce the issue
please reopen and attach the updates.
> ActiveMQ not preserving Message Order
> -------------------------------------
>                 Key: AMQ-2780
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.3.0
>         Environment: Windows XP, JDK 1.6.0_07
>            Reporter: Ryan Rolland
>            Assignee: Timothy Bish
>            Priority: Critical
>             Fix For: 5.6.0
>         Attachments:,,,
> I believe I have found a bug in message order delivery in ActiveMQ. I have taken the
example benchmark consumer and producer programs and made the following modifications:
> 1)	Added a counter to keep track manually of the message order.
> 2)	Made the transmitted number of bytes per message random between 1 and 64 bytes.
> 3)	Added a random delay between 1 and 10 seconds triggered after every 100000 messages
transferred on the publishing side.
> After running for a few minutes I begin to see violations in the message delivery order.
In my most recent run I have counted 54 violations over the course of an hour.

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