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From "Gary Tully (JIRA)" <>
Subject [jira] Commented: (AMQ-2489) "Could not correlate acknowledgment with dispatched message" exception
Date Fri, 20 Nov 2009 16:21:52 GMT


Gary Tully commented on AMQ-2489:

thanks for the test case, The problem is a delivery ack that is not conditional on the consumer
calling acknowledge and that combined with a prefetch=1 causes that pending delivery ack to
be sent immediately, resulting in the broker error looking for a message that has already
been acked.
However the messages are being acked individually just fine. 
The fix looks trivial enough, will commit once a full test run completes.

> "Could not correlate acknowledgment with dispatched message" exception
> ----------------------------------------------------------------------
>                 Key: AMQ-2489
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.1.0, 5.3.0, 5.4.0
>            Reporter: Dariusz Szablinski
>            Assignee: Gary Tully
>             Fix For: 5.3.1
>         Attachments:
> This exception is thrown on broker side when two or more ASYNCH consumers acknowledges
messages in not in order they received the messages.
> See more on users list:
> Simple unit test attached.

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