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From "Robbie Gemmell (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (QPID-5450) [Java Broker] shared message group race between acquiring new messages and acking delivered messages can lead to concurrent delivery
Date Tue, 07 Jan 2014 16:21:51 GMT

     [ https://issues.apache.org/jira/browse/QPID-5450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robbie Gemmell reassigned QPID-5450:
------------------------------------

    Assignee: Rob Godfrey  (was: Robbie Gemmell)

Rob, can you give this a look over please?

Thanks,
Robbie

> [Java Broker] shared message group race between acquiring new messages and acking delivered
messages can lead to concurrent delivery
> ------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: QPID-5450
>                 URL: https://issues.apache.org/jira/browse/QPID-5450
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Broker
>    Affects Versions: 0.22, 0.24, 0.26
>            Reporter: Robbie Gemmell
>            Assignee: Rob Godfrey
>             Fix For: 0.27
>
>
> When using shared message groups, there is a synchronization issue leading to a race
between acquiring new messages that are being added to the group causing a state change within
the group, and acking of the last message in the group, which can lead to concurrent delivery
of messages for the group.



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