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Date: Fri, 9 Apr 2010 16:25:10 +0000 (UTC)
From: "Igor Hjelmstrom Vinhas Ribeiro (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
Subject: [jira] Commented: (AMQ-2687) NullPointerException at kahadb.
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    [ https://issues.apache.org/activemq/browse/AMQ-2687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=58735#action_58735 ] 

Igor Hjelmstrom Vinhas Ribeiro commented on AMQ-2687:
-----------------------------------------------------

I was running both a producer and a consumer - both working in a queue that had roughly 300.000 messages. I then executed a "prune" on that queue... saw it executing for a while (it had erased a few thousand messages already), clicked on "delete" (for the same queue), saw the Webconsole hang/stop responding and did a kill -9 in the Java process. After that the queue would no longer start.

Let me know if you need any more info, help, or want me to reproduce it again.

> NullPointerException at kahadb.
> -------------------------------
>
>                 Key: AMQ-2687
>                 URL: https://issues.apache.org/activemq/browse/AMQ-2687
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.3.0, 5.3.1, 5.4.0
>            Reporter: Igor Hjelmstrom Vinhas Ribeiro
>            Assignee: Hiram Chirino
>
> Hi!
> I am receiving a NullPointerException when trying to start up activemq after a crash.
> This is similar to http://issues.apache.org/activemq/browse/AMQ-2512 and http://issues.apache.org/activemq/browse/AMQ-2672 with the important difference that I confirmed this happens right now with:
>    5.3.0
>    5.3.1
>    The current TRUNK revision (I tested with revision 931309 from SVN).
> Also, this happens with both the default (store) cursor and fileQueueCursor. (I tried the solution given by Dariusz Szablinski at http://issues.apache.org/activemq/browse/AMQ-2512 but it did not help).
> I uploaded the full directory with activemq built from trunk together with the data directory (~85 megs) to: http://rapidshare.com/files/372819396/apache-activemq-5.4-SNAPSHOT_-_svn_trunk_revision_931309_with_crashing_data.tar.gz.html
> To see the issue, just try to start activemq from this distribution.
> ERROR | Failed to start ActiveMQ JMS Message Broker. Reason: java.lang.NullPointerException
> java.lang.NullPointerException
>         at org.apache.kahadb.index.BTreeNode$BTreeIterator.findNextPage(BTreeNode.java:109)
>         at org.apache.kahadb.index.BTreeNode$BTreeIterator.hasNext(BTreeNode.java:120)
>         at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore$4.execute(KahaDBStore.java:222)
>         at org.apache.kahadb.page.Transaction.execute(Transaction.java:728)
>         at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore.recover(KahaDBStore.java:219)
>         at org.apache.activemq.broker.region.Queue.initialize(Queue.java:251)
>         at org.apache.activemq.broker.region.DestinationFactoryImpl.createDestination(DestinationFactoryImpl.java:83)
>         at org.apache.activemq.broker.region.AbstractRegion.createDestination(AbstractRegion.java:472)
>         at org.apache.activemq.broker.jmx.ManagedQueueRegion.createDestination(ManagedQueueRegion.java:56)
>         at org.apache.activemq.broker.region.AbstractRegion.addDestination(AbstractRegion.java:123)
>         at org.apache.activemq.broker.region.RegionBroker.addDestination(RegionBroker.java:279)
>         at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:143)
>         at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:143)
>         at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:143)
>         at org.apache.activemq.advisory.AdvisoryBroker.addDestination(AdvisoryBroker.java:157)
>         at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:143)
>         at org.apache.activemq.broker.MutableBrokerFilter.addDestination(MutableBrokerFilter.java:149)
>         at org.apache.activemq.broker.region.AbstractRegion.start(AbstractRegion.java:95)
>         at org.apache.activemq.broker.region.RegionBroker.start(RegionBroker.java:184)
>         at org.apache.activemq.broker.jmx.ManagedRegionBroker.start(ManagedRegionBroker.java:100)
>         at org.apache.activemq.broker.BrokerFilter.start(BrokerFilter.java:155)
>         at org.apache.activemq.broker.scheduler.SchedulerBroker.start(SchedulerBroker.java:85)
>         at org.apache.activemq.broker.TransactionBroker.start(TransactionBroker.java:112)
>         at org.apache.activemq.broker.BrokerFilter.start(BrokerFilter.java:155)
>         at org.apache.activemq.broker.BrokerFilter.start(BrokerFilter.java:155)
>         at org.apache.activemq.broker.BrokerService$3.start(BrokerService.java:1743)
>         at org.apache.activemq.broker.BrokerService.start(BrokerService.java:476)
>         at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:85)
>         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:597)
>         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1527)
>         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1468)
>         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1400)
>         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
> ...

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