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From "Martin Ritchie (JIRA)" <qpid-...@incubator.apache.org>
Subject [jira] Commented: (QPID-143) Acks during failover
Date Tue, 06 Oct 2009 13:07:31 GMT

    [ https://issues.apache.org/jira/browse/QPID-143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12762609#action_12762609
] 

Martin Ritchie commented on QPID-143:
-------------------------------------

This problem is best identified by when causing failover in a test whilst in the onMessage
handler.

> Acks during failover
> --------------------
>
>                 Key: QPID-143
>                 URL: https://issues.apache.org/jira/browse/QPID-143
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Client
>    Affects Versions: M3
>            Reporter: Steven Shaw
>            Assignee: Martin Ritchie
>         Attachments: TEST-org.apache.qpid.test.unit.ack.AcknowledgeAfterFailoverOnMessageTest.testDupsOk.out
>
>
> Martin Ritchie wrote:
> > It's possible to receive a message and before acking it, fail over to a new broker.
When the message is acked the broker barfs 
> > because it does not know about that message.
> See AMQChannel.checkAck.
> Steven Shaw wrote:
> > We must use NO_ACK acknowledgement mode when failover in needed as a workaround
until this issue is resolved.

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