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From Rajeev Mohindra <rajeev_mohin...@bmc.com>
Subject Under heavy load ActiveMQ is dying with below exception in random interval (Once in week)
Date Thu, 27 Sep 2012 07:00:10 GMT
Exception:
2012-09-05 15:29:04,865 ERROR [org.apache.activemq.broker.region.Topic]
Failed to remove expired Message from the store 
java.lang.NullPointerException
	at org.apache.activemq.broker.region.Topic.acknowledge(Topic.java:510)
	at org.apache.activemq.broker.region.Topic.messageExpired(Topic.java:703)
	at
org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.discardExpiredMessage(FilePendingMessageCursor.java:476)
	at
org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.expireOldMessages(FilePendingMessageCursor.java:418)
	at
org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.tryAddMessageLast(FilePendingMessageCursor.java:220)
	at
org.apache.activemq.broker.region.TopicSubscription.add(TopicSubscription.java:136)
	at
org.apache.activemq.broker.region.policy.SimpleDispatchPolicy.dispatch(SimpleDispatchPolicy.java:48)
	at org.apache.activemq.broker.region.Topic.dispatch(Topic.java:669)
	at org.apache.activemq.broker.region.Topic.doMessageSend(Topic.java:481)
	at org.apache.activemq.broker.region.Topic.send(Topic.java:417)
	at
org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:407)
	at
org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:503)
	at
org.apache.activemq.broker.jmx.ManagedRegionBroker.send(ManagedRegionBroker.java:305)
	at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
	at
org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:96)
	at
org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:306)
	at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
	at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
	at
org.apache.activemq.security.AuthorizationBroker.send(AuthorizationBroker.java:192)
	at
org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:135)
	at
org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:453)
	at
org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:681)
	at
org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:292)
	at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:150)
	at
org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116)
	at
org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
	at
org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:231)
	at
org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122)
	at
org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)



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