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Re: ClassCastException having relation to expired messages

by sic :: Rate this Message:

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While expired messages remain on queue, server cannot be re-started with ClassCastException until I delete persistent file(e.g. file : data\kr-store\data\hash-index-queue-data_queue#3a#2f#2fTEST.QUEUE, QueueName : TEST.QUEUE) of the queue which has expired messages

Yet, this way has disadvantage that all of messages on specified queue have been purged regardless of expiration.

Does anyone have other ways?

sic wrote:
While testing ActiveMQ5.2.0, I have a question about expired message.

Note that testing messages are Persistent and using a queue, set message expiration time to 10 seconds. configurations are same except destination policy(using a vm queue cursor) as below
<destinationPolicy>
        <policyMap>
                <policyEntries>
                        <policyEntry queue=">" memoryLimit="5mb">
                                <dispatchPolicy>
                                        <strictOrderDispatchPolicy />
                                </dispatchPolicy>
                                <deadLetterStrategy>
                                        <individualDeadLetterStrategy queuePrefix="DLQ."/>
                                </deadLetterStrategy>
                                <pendingQueuePolicy>
                                        <vmQueueCursor />
                                </pendingQueuePolicy>
                        </policyEntry>
                </policyEntries>
        </policyMap>
</destinationPolicy>
Additionally, it turns out that the activemq broker actually does not proactively purge expired messages from queues. so we set
a thread that periodically cleared my queues of expired messages by help of this forum's advisor.
We suppose that a server is stopped unexpectedly when expired message leaves on queue without disposed by the thread
After recovering a server, we will expect that remained messages including both normal and expired message are loaded normally
However server stopped abnormally and some error occured while starting ActiveMQ. Errors are like that

2009-07-01 17:13:45,125 [main           ] INFO  BrokerService                  - For help or more information please see: http://activemq.apache.org/
2009-07-01 17:13:45,421 [main           ] INFO  KahaStore                      - Kaha Store using data directory D:\apache\apache-activemq-5.2.0\binary\bin\..\data\kr-store\data
2009-07-01 17:13:45,796 [main           ] ERROR BrokerService                  - Failed to start ActiveMQ JMS Message Broker. Reason: java.lang.ClassCastException: org.apache.activemq.command.ActiveMQObjectMessage
java.lang.ClassCastException: org.apache.activemq.command.ActiveMQObjectMessage
        at org.apache.activemq.broker.region.Queue.messageExpired(Queue.java:1114)
        at org.apache.activemq.broker.region.Queue.messageExpired(Queue.java:1106)
        at org.apache.activemq.broker.region.Queue$5.recoverMessage(Queue.java:173)
        at org.apache.activemq.store.amq.RecoveryListenerAdapter.recoverMessage(RecoveryListenerAdapter.java:45)
        at org.apache.activemq.store.amq.RecoveryListenerAdapter.recoverMessageReference(RecoveryListenerAdapter.java:56)
        at org.apache.activemq.store.kahadaptor.KahaReferenceStore.recoverReference(KahaReferenceStore.java:82)
        at org.apache.activemq.store.kahadaptor.KahaReferenceStore.recover(KahaReferenceStore.java:93)
        at org.apache.activemq.store.amq.AMQMessageStore.recover(AMQMessageStore.java:481)
        at org.apache.activemq.broker.region.Queue.initialize(Queue.java:167)
        at org.apache.activemq.broker.region.DestinationFactoryImpl.createDestination(DestinationFactoryImpl.java:83)
        at org.apache.activemq.broker.region.AbstractRegion.createDestination(AbstractRegion.java:434)
        at org.apache.activemq.broker.jmx.ManagedQueueRegion.createDestination(ManagedQueueRegion.java:56)
        at org.apache.activemq.broker.region.AbstractRegion.addDestination(AbstractRegion.java:120)
        at org.apache.activemq.broker.region.RegionBroker.addDestination(RegionBroker.java:261)
        at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:142)
        at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:142)
        at org.apache.activemq.advisory.AdvisoryBroker.addDestination(AdvisoryBroker.java:147)
        at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:142)
        at org.apache.activemq.broker.MutableBrokerFilter.addDestination(MutableBrokerFilter.java:149)
        at org.apache.activemq.broker.region.AbstractRegion.start(AbstractRegion.java:94)
        at org.apache.activemq.broker.region.RegionBroker.start(RegionBroker.java:176)
        at org.apache.activemq.broker.jmx.ManagedRegionBroker.start(ManagedRegionBroker.java:103)
        at org.apache.activemq.broker.TransactionBroker.start(TransactionBroker.java:112)
        at org.apache.activemq.broker.BrokerFilter.start(BrokerFilter.java:154)
        at org.apache.activemq.broker.BrokerFilter.start(BrokerFilter.java:154)
        at org.apache.activemq.broker.MutableBrokerFilter.start(MutableBrokerFilter.java:161)
        at org.apache.activemq.broker.BrokerService.start(BrokerService.java:468)
        at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:52)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1368)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1334)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
        at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:64)
        at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:52)
        at org.apache.activemq.xbean.XBeanBrokerFactory.createApplicationContext(XBeanBrokerFactory.java:96)
        at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java:52)
        at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:71)
        at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:54)
        at org.apache.activemq.console.command.StartCommand.startBroker(StartCommand.java:115)
        at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:74)
        at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)
        at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:129)
        at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)
        at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:79)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.activemq.console.Main.runTaskClass(Main.java:225)
        at org.apache.activemq.console.Main.main(Main.java:106)
2009-07-01 17:13:45,812 [main           ] INFO  BrokerService                  - ActiveMQ Message Broker (localhost, null) is shutting down
2009-07-01 17:13:45,828 [main           ] INFO  NetworkConnector               - Network Connector default-nc Stopped

It's in Windows XP.

Regards

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