Housekeeping thread can throw NPE and stop running.
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Key: QPID-2263
URL: https://issues.apache.org/jira/browse/QPID-2263
Project: Qpid
Issue Type: Bug
Components: Java Broker
Affects Versions: 0.5, M4, M3
Reporter: Martin Ritchie
Assignee: Martin Ritchie
Fix For: 0.6
The following NPE stack trace has been observed on the housekeeping thread:
Exception in thread "Queue-housekeeping-dev" java.lang.NullPointerException
at
org.apache.qpid.server.queue.WeakReferenceMessageHandle.populateFromMessageMetaData(WeakReferenceMessageHandle.java:85)
at
org.apache.qpid.server.queue.WeakReferenceMessageHandle.loadMessageMetaData(WeakReferenceMessageHandle.java:79)
at
org.apache.qpid.server.queue.WeakReferenceMessageHandle.getContentHeaderBody(WeakReferenceMessageHandle.java:64)
at
org.apache.qpid.server.queue.AMQMessage.getContentHeaderBody(AMQMessage.java:273)
at
org.apache.qpid.server.queue.NotificationCheck$2.notifyIfNecessary(NotificationCheck.java:53)
at
org.apache.qpid.server.queue.AMQQueueMBean.checkForNotification(AMQQueueMBean.java:263)
at
org.apache.qpid.server.queue.SimpleAMQQueue.checkMessageStatus(SimpleAMQQueue.java:1627)
at
org.apache.qpid.server.virtualhost.VirtualHost$1RemoveExpiredMessagesTask.run(VirtualHost.java:268)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)
Preventing the HK thread from working on deleted messages will ensure that this
situation does not occur.
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