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https://issues.apache.org/jira/browse/QPID-4014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13426617#comment-13426617
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Keith Wall commented on QPID-4014:
----------------------------------
Fixed by QPID-4171.
> System test ConflationQueueTest.testParallelProductionAndConsumption failed
> ---------------------------------------------------------------------------
>
> Key: QPID-4014
> URL: https://issues.apache.org/jira/browse/QPID-4014
> Project: Qpid
> Issue Type: Bug
> Components: Java Tests
> Reporter: Philip Harvey
> Assignee: Philip Harvey
> Priority: Minor
> Fix For: 0.17
>
> Attachments:
> 0001-QPID-4014-increase-debug-logging-in-ConflationQueueL.patch,
> TEST-org.apache.qpid.server.queue.ConflationQueueTest.testParallelProductionAndConsumption.out.2nd-occurence.gz,
>
> TEST-org.apache.qpid.server.queue.ConflationQueueTest.testParallelProductionAndConsumption.out.build291.gz,
>
> TEST-org.apache.qpid.server.queue.ConflationQueueTest.testParallelProductionAndConsumption.out.build419.bz2,
>
> TEST-org.apache.qpid.server.queue.ConflationQueueTest.testParallelProductionAndConsumption.out.gz
>
>
> Unit test ConflationQueueTest.testParallelProductionAndConsumption has failed
> on Jenkins at least twice:
> * [Build
> 206|https://builds.apache.org/view/M-R/view/Qpid/job/Qpid-Java-Java-BDB-TestMatrix/jdk=JDK%201.6%20(latest),label=Ubuntu,profile=java-bdb.0-9-1/206/testReport/org.apache.qpid.server.queue/ConflationQueueTest/testParallelProductionAndConsumption/]
> * [Build
> 291|https://builds.apache.org/job/Qpid-Java-Java-BDB-TestMatrix/291/jdk=JDK%201.6%20(latest),label=Ubuntu,profile=java-bdb.0-9-1/testReport/junit/org.apache.qpid.server.queue/ConflationQueueTest/testParallelProductionAndConsumption/]
> This test has previously run successfully.
> On first glance, the test doesn't appear to have any inherent race
> conditions, therefore it is possible that this represents a genuine problem.
> In this test, two producers each each 400 messages with alternating
> conflation key values, followed by special "shutdown" messages. A single
> consumer remembers the latest message for each conflation key value.
> Each producer's last few messages should be:
> * Message 397 (conflation key '1')
> * Message 398 (conflation key '0')
> * Message 399 (conflation key '1')
> * Shutdown message
> The assertion in question checks the last message received for each
> conflation key value. In this case, the last message with key '1' is message
> 397, not the expected message 399.
> Examination of the test output (attached) indicates that the consumer
> received message 399 once (it must have been conflated), and that -
> surprisingly - it arrived *after* the two shutdown messages.
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