NullPointerException logged every 30 seconds after
---------------------------------------------------
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
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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