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https://issues.apache.org/jira/browse/QPID-1524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12656587#action_12656587
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Martin Ritchie commented on QPID-1524:
--------------------------------------
The actual message order:
1:6
2:1
3:2
4:5
5:7
6:3
7:4
8:9
9:8
Is not what the test is expecting:
1:1
2:6
3:8
4:2
5:5
6:7
7:4
8:4
9:9
Full log from this run attached.
> AMQPriorityQueueTest causes NullPointerException
> ------------------------------------------------
>
> Key: QPID-1524
> URL: https://issues.apache.org/jira/browse/QPID-1524
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: M4
> Reporter: Martin Ritchie
>
> Summary:
> Our CI box has failed this test twice but on looking at a clean test run we
> get these NPEs to standard error. I'm sure this is not good, however as we
> have NO logging what so ever in the message delivery path we are unable to
> say more on when these occured.
> Also as this is a unit test and not a QTC we cannot tell which test caused
> these NPE.
> Exception in thread "pool-6-thread-1" java.lang.NullPointerException
> at
> org.apache.qpid.server.queue.SimpleAMQQueue.attemptDelivery(SimpleAMQQueue.java:1254)
> at
> org.apache.qpid.server.queue.SimpleAMQQueue.flushSubscription(SimpleAMQQueue.java:1216)
> at
> org.apache.qpid.server.queue.SimpleAMQQueue$SubFlushRunner.run(SimpleAMQQueue.java:1177)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> Exception in thread "pool-10-thread-1" java.lang.NullPointerException
> at
> org.apache.qpid.server.queue.SimpleAMQQueue.attemptDelivery(SimpleAMQQueue.java:1254)
> at
> org.apache.qpid.server.queue.SimpleAMQQueue.flushSubscription(SimpleAMQQueue.java:1216)
> at
> org.apache.qpid.server.queue.SimpleAMQQueue$SubFlushRunner.run(SimpleAMQQueue.java:1177)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> Test failure was:
> junit.framework.AssertionFailedError: expected:<1> but was:<6>
> The first message was not as expected, the test does not let us know if the
> message was lost or simply reordered.
> Approach:
> 1) Updating the test to give more details on the loss vs. re-ordering woudl
> be help understand the failures
> 2) The NPEs should be resolved as this could cause other issues.
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