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https://issues.apache.org/jira/browse/AMQ-3804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rob Davies resolved AMQ-3804.
-----------------------------
Resolution: Fixed
I believe Johno is correct in his diagnosis - resolved by SVN revision 1326692
> NullPointerException logged every 30 seconds while attempting to clear
> expired messages
> ----------------------------------------------------------------------------------------
>
> Key: AMQ-3804
> URL: https://issues.apache.org/jira/browse/AMQ-3804
> Project: ActiveMQ
> Issue Type: Bug
> Components: Message Store
> Affects Versions: 5.6.0
> Environment: Windows XP SP3
> Reporter: Rajib Rashid
> Assignee: Rob Davies
> Fix For: 5.6.0
>
>
> this is a duplicate of AMQ-3677 which was marked resolved. however i am still
> noticing this issue using the 5.6 snapshot release from apr 11, 2012. in this
> case activemq server was shutdown by terminating the java process. when the
> server is started again, following exception is logged every 30 seconds:
> {code}
> 2012-04-11 14:06:53,786 org.apache.activemq.broker.region.Topic[ActiveMQ
> Broker[ZyrionMessageBus] Scheduler]: (ERROR) ( Topic.java:683) Failed to
> remove expired Message from the store
> java.lang.NullPointerException
> at
> org.apache.activemq.store.kahadb.MessageDatabase.removeAckLocation(MessageDatabase.java:2005)
> at
> org.apache.activemq.store.kahadb.MessageDatabase.updateIndex(MessageDatabase.java:1259)
> at
> org.apache.activemq.store.kahadb.MessageDatabase$15.execute(MessageDatabase.java:1046)
> at org.apache.kahadb.page.Transaction.execute(Transaction.java:769)
> at
> org.apache.activemq.store.kahadb.MessageDatabase.process(MessageDatabase.java:1044)
> at
> org.apache.activemq.store.kahadb.MessageDatabase$13.visit(MessageDatabase.java:977)
> at
> org.apache.activemq.store.kahadb.data.KahaRemoveMessageCommand.visit(KahaRemoveMessageCommand.java:220)
> at
> org.apache.activemq.store.kahadb.MessageDatabase.process(MessageDatabase.java:969)
> at
> org.apache.activemq.store.kahadb.MessageDatabase.store(MessageDatabase.java:881)
> at
> org.apache.activemq.store.kahadb.MessageDatabase.store(MessageDatabase.java:863)
> at
> org.apache.activemq.store.kahadb.KahaDBStore$KahaDBTopicMessageStore.doAcknowledge(KahaDBStore.java:715)
> at
> org.apache.activemq.store.kahadb.KahaDBStore$KahaDBTopicMessageStore.acknowledge(KahaDBStore.java:701)
> at
> org.apache.activemq.store.kahadb.KahaDBTransactionStore.acknowledge(KahaDBTransactionStore.java:519)
> at
> org.apache.activemq.store.kahadb.KahaDBTransactionStore$2.acknowledge(KahaDBTransactionStore.java:222)
> at org.apache.activemq.broker.region.Topic.acknowledge(Topic.java:489)
> at
> org.apache.activemq.broker.region.Topic.messageExpired(Topic.java:681)
> at org.apache.activemq.broker.region.Topic.doBrowse(Topic.java:562)
> at org.apache.activemq.broker.region.Topic.access$100(Topic.java:62)
> at org.apache.activemq.broker.region.Topic$6.run(Topic.java:662)
> at
> org.apache.activemq.thread.SchedulerTimerTask.run(SchedulerTimerTask.java:33)
> at java.util.TimerThread.mainLoop(Unknown Source)
> at java.util.TimerThread.run(Unknown Source)
> {code}
> here is the server configuration:
> {code}
> <beans
> xmlns="http://www.springframework.org/schema/beans";
> xmlns:amq="http://activemq.apache.org/schema/core";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:schemaLocation="http://www.springframework.org/schema/beans
> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
> http://activemq.apache.org/schema/core
> http://activemq.apache.org/schema/core/activemq-core.xsd";>
> <!-- Allows us to use system properties as variables in this configuration
> file -->
> <bean
> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"/>
>
> <!-- Configure the ActiveMQ broker -->
> <broker
> xmlns="http://activemq.apache.org/schema/core";
> brokerName="ZyrionMessageBus"
> useJmx="false"
> dataDirectory="${activemq.base}/../../utils/spool/jms"
> deleteAllMessagesOnStartup="false"
> advisorySupport="false"
> offlineDurableSubscriberTimeout="7200000"
> offlineDurableSubscriberTaskSchedule="1800000">
> [...]
> <!-- Configure message persistence for the broker -->
> <persistenceAdapter>
> <kahaDB directory="${activemq.base}/../../utils/spool/jms/kahadb"
> ignoreMissingJournalfiles="true" checkForCorruptJournalFiles="true"
> checksumJournalFiles="true"/>
> </persistenceAdapter>
> {code}
> i can provide a copy of the kahadb directory if necessary to duplicate the
> issue. let me know if you require any additional information. thanks
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