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https://issues.apache.org/jira/browse/AMQ-4349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timothy Bish closed AMQ-4349.
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Resolution: Incomplete
No test case for reproducing this.
> ActiveMQ 5.8.0 thows nullpointer exception while shutting down (NIO + LevelDB
> + pending Non Peristent Messages)
> ---------------------------------------------------------------------------------------------------------------
>
> Key: AMQ-4349
> URL: https://issues.apache.org/jira/browse/AMQ-4349
> Project: ActiveMQ
> Issue Type: Bug
> Reporter: RK G
>
> I am not sure whether I have to post this in the mailling list first or open
> a ticket.
> We updated our activemq broker to version 5.8.0 and replaced the persistent
> store from kahadb to leveldb. The persistent write performance increased by
> 10 times but at the same time the non persistent message write and read
> performance is decreased. Especially the read performance is decreased a lot.
> When there are not persistent messages on the broker and if we do graceful
> shutdown, the broker throws a null pointer exception. This is happening only
> if we use leveldb. Here is the stack trace.
> 2013-02-26 06:06:58,956 | INFO | Stopped LevelDB[/opt/activemq/data/leveldb]
> | org.apache.activemq.leveldb.LevelDBStore | Thread-16
> 2013-02-26 06:06:58,957 | ERROR | Could not stop service: QueueRegion:
> destinations=1, subscriptions=0, memory=0%. Reason:
> java.lang.NullPointerException | org.apache.activemq.broker.jmx.Ma
> nagedQueueRegion | Thread-16
> java.lang.NullPointerException
> at
> org.fusesource.hawtdispatch.package$RichExecutor.execute(hawtdispatch.scala:171)
> at
> org.fusesource.hawtdispatch.package$RichExecutorTrait$class.apply(hawtdispatch.scala:68)
> at
> org.fusesource.hawtdispatch.package$RichExecutor.apply(hawtdispatch.scala:169)
> at
> org.fusesource.hawtdispatch.package$RichExecutorTrait$class.future(hawtdispatch.scala:116)
> at
> org.fusesource.hawtdispatch.package$RichExecutor.future(hawtdispatch.scala:169)
> at
> org.fusesource.hawtdispatch.package$RichExecutorTrait$class.sync(hawtdispatch.scala:107)
> at
> org.fusesource.hawtdispatch.package$RichExecutor.sync(hawtdispatch.scala:169)
> at
> org.apache.activemq.leveldb.DBManager.destroyPList(DBManager.scala:773)
> at
> org.apache.activemq.leveldb.LevelDBStore.removePList(LevelDBStore.scala:454)
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.destroyDiskList(FilePendingMessageCursor.java:168)
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.destroy(FilePendingMessageCursor.java:163)
> at
> org.apache.activemq.broker.region.cursors.StoreQueueCursor.stop(StoreQueueCursor.java:82)
> at org.apache.activemq.broker.region.Queue.stop(Queue.java:910)
> at
> org.apache.activemq.broker.region.AbstractRegion.stop(AbstractRegion.java:117)
> at
> org.apache.activemq.util.ServiceStopper.stop(ServiceStopper.java:41)
> at
> org.apache.activemq.broker.region.RegionBroker.doStop(RegionBroker.java:574)
> at
> org.apache.activemq.broker.jmx.ManagedRegionBroker.doStop(ManagedRegionBroker.java:126)
> at
> org.apache.activemq.broker.region.RegionBroker.stop(RegionBroker.java:194)
> at org.apache.activemq.broker.BrokerFilter.stop(BrokerFilter.java:161)
> at org.apache.activemq.broker.BrokerFilter.stop(BrokerFilter.java:161)
> at
> org.apache.activemq.broker.TransactionBroker.stop(TransactionBroker.java:204)
> at
> org.apache.activemq.broker.BrokerService$5.stop(BrokerService.java:2070)
> at
> org.apache.activemq.util.ServiceStopper.stop(ServiceStopper.java:41)
> at
> org.apache.activemq.broker.BrokerService.stop(BrokerService.java:715)
> at
> org.apache.activemq.xbean.XBeanBrokerService.stop(XBeanBrokerService.java:96)
> at
> org.apache.activemq.console.command.StartCommand$1.run(StartCommand.java:148)
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