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

    [ https://issues.apache.org/activemq/browse/AMQ-2489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=55639#action_55639
] 

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: https://issues.apache.org/activemq/browse/AMQ-2489
>             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: JmsUnorderedAsynchAckTest.java
>
>
> 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: http://old.nabble.com/%22Could-not-correlate-acknowledgment-with-dispatched-message%22-td26308220.html
> Simple unit test attached.

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