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https://issues.apache.org/jira/browse/QPID-3604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13192939#comment-13192939
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Rob Godfrey commented on QPID-3604:
-----------------------------------
Rajith, your latest commit seems to have broken the 0-9-1 build:
java.lang.NullPointerException
at
org.apache.qpid.client.BasicMessageProducer_0_8.declareDestination(BasicMessageProducer_0_8.java:58)
at
org.apache.qpid.client.BasicMessageProducer.<init>(BasicMessageProducer.java:139)
at
org.apache.qpid.client.BasicMessageProducer_0_8.<init>(BasicMessageProducer_0_8.java:51)
at
org.apache.qpid.client.AMQSession_0_8.createMessageProducer(AMQSession_0_8.java:478)
at
org.apache.qpid.client.AMQSession_0_8.createMessageProducer(AMQSession_0_8.java:85)
at org.apache.qpid.client.AMQSession$7.execute(AMQSession.java:2679)
at org.apache.qpid.client.AMQSession$7.execute(AMQSession.java:2670)
at
org.apache.qpid.client.AMQConnectionDelegate_8_0.executeRetrySupport(AMQConnectionDelegate_8_0.java:349)
at
org.apache.qpid.client.AMQConnection.executeRetrySupport(AMQConnection.java:577)
at
org.apache.qpid.client.failover.FailoverRetrySupport.execute(FailoverRetrySupport.java:102)
at
org.apache.qpid.client.AMQSession.createProducerImpl(AMQSession.java:2668)
at
org.apache.qpid.client.AMQSession.createProducer(AMQSession.java:1199)
at org.apache.qpid.client.AMQSession.createProducer(AMQSession.java:120)
at
org.apache.qpid.client.prefetch.PrefetchBehaviourTest.testConnectionStop(PrefetchBehaviourTest.java:212)
at
org.apache.qpid.test.utils.QpidBrokerTestCase.runBare(QpidBrokerTestCase.java:242)
at org.apache.qpid.test.utils.QpidTestCase.run(QpidTestCase.java:135)
Please run both the 0-9-1 and 0-10 builds before committing a change
> If the connection is stopped the client should release all it's messages in
> the prefetch buffer
> -----------------------------------------------------------------------------------------------
>
> Key: QPID-3604
> URL: https://issues.apache.org/jira/browse/QPID-3604
> Project: Qpid
> Issue Type: Bug
> Components: Java Client
> Affects Versions: 0.14
> Reporter: Rajith Attapattu
> Assignee: Rajith Attapattu
> Fix For: 0.15
>
>
> When connection.stop() is called, the JMS client should release all it's
> messages in the prefetch buffer.
> For all we know, the connection may never be started (depending on
> application logic) and those messages will be stuck on the prefetch buffer.
> Releasing it will allow another consumer to get them (in the case of a shared
> queue case).
> Another less severe but nevertheless an undesirable side affect of this is
> the client getting more messages than required by the capacity or prefetch
> arguments. See QPID-3602
> This may not be a big issue if the client is prefetching a few messages, but
> if prefetching something like 5000 messages, this could potentially cause a
> lethal spike in the clients memory usage.
> Even in low capacity/prefetch values, if the messages are large (say in the
> mega byte range) this could potentially put the client under memory pressure.
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