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https://issues.apache.org/jira/browse/QPIDJMS-112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robbie Gemmell resolved QPIDJMS-112.
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Resolution: Fixed
> have receiveNoWait and receive(timeout) drain credit to ensure no message is
> available
> --------------------------------------------------------------------------------------
>
> Key: QPIDJMS-112
> URL: https://issues.apache.org/jira/browse/QPIDJMS-112
> Project: Qpid JMS
> Issue Type: Improvement
> Components: qpid-jms-client
> Affects Versions: 0.5.0
> Reporter: Robbie Gemmell
> Assignee: Robbie Gemmell
> Fix For: 0.6.0
>
>
> As of QPIDJMS-92, if the consumer has been configured to have no prefetch,
> the client will issue and drain a single credit before inspecting its local
> message queue, ensuring that any available message sent by a broker will be
> returned to the application. However, if the client has prefetch, the
> consumer credit is granted and never drained, which means that a
> recieveNoWait call will only return a message if first given time to prefetch
> it, otherwise returning null even where messages 'are available'.
> The behaviour should be updated such that if no message is locally available
> when checked, the credit is drained to ensure messages available on the
> broker are retrieved and given the chance to be returned rather than
> returning null.
> The same improvement can be applied to receive with a timeout to give
> behaviour many would expect where messages 'are available', though it might
> additionally be useful if the drain could be disabled in this case.
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