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Posted to dev@activemq.apache.org by "Rob Davies (JIRA)" <ji...@apache.org> on 2008/05/01 08:33:44 UTC
[jira] Resolved: (AMQ-1705) Deadlock between VMTransport and
QueueThread
[ https://issues.apache.org/activemq/browse/AMQ-1705?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rob Davies resolved AMQ-1705.
-----------------------------
Fix Version/s: 5.2.0
Resolution: Fixed
Fixed by SVN revision 652438
> Deadlock between VMTransport and QueueThread
> --------------------------------------------
>
> Key: AMQ-1705
> URL: https://issues.apache.org/activemq/browse/AMQ-1705
> Project: ActiveMQ
> Issue Type: Bug
> Components: Transport
> Affects Versions: 5.1.0
> Environment: Active MQ 5.1.0-RC2
> java version "1.6.0_04"
> Java(TM) SE Runtime Environment (build 1.6.0_04-b12)
> Java HotSpot(TM) Server VM (build 10.0-b19, mixed mode)
> Solaris 10
> Reporter: Carsten Krebs
> Assignee: Rob Davies
> Fix For: 5.2.0
>
> Attachments: activemq-embedded.xml, activemq.xml, jstack.log
>
>
> After restarting the central broker in a simple network of brokers, which consists of one central standalone broker and multiple embedded broker, each intercepting one jms consumer, all producers run into a deadlock.
> "VMTransport" daemon prio=3 tid=0x093bd000 nid=0x901 waiting for monitor entry [0xa30d5000..0xa30d5af0]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.activemq.broker.region.PrefetchSubscription.add(PrefetchSubscription.java:450)
> - waiting to lock <0xdb314578> (a java.lang.Object)
> at org.apache.activemq.broker.region.Queue.addSubscription(Queue.java:210)
> at org.apache.activemq.broker.region.AbstractRegion.addConsumer(AbstractRegion.java:265)
> - locked <0xaf37ca60> (a java.lang.Object)
> - locked <0xdb0c36f0> (a java.lang.Object)
> at org.apache.activemq.broker.region.RegionBroker.addConsumer(RegionBroker.java:380)
> at org.apache.activemq.broker.BrokerFilter.addConsumer(BrokerFilter.java:85)
> at org.apache.activemq.advisory.AdvisoryBroker.addConsumer(AdvisoryBroker.java:83)
> at org.apache.activemq.broker.BrokerFilter.addConsumer(BrokerFilter.java:85)
> at org.apache.activemq.broker.MutableBrokerFilter.addConsumer(MutableBrokerFilter.java:92)
> at org.apache.activemq.broker.TransportConnection.processAddConsumer(TransportConnection.java:529)
> "QueueThread:queue://de.gameduell.service.user.UserCache.MessageQueue" daemon prio=3 tid=0x086b8000 nid=0x25 waiting for monitor entry [0xa2fdf000..0xa2fdf8f
> 0]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.activemq.broker.region.AbstractRegion.lookup(AbstractRegion.java:367)
> - waiting to lock <0xaf37ca60> (a java.lang.Object)
> at org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:332)
> at org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:445)
> at org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:224)
> at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:125)
> at org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:95)
> at org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:132)
> at org.apache.activemq.util.BrokerSupport.resend(BrokerSupport.java:56)
> at org.apache.activemq.broker.region.RegionBroker.sendToDeadLetterQueue(RegionBroker.java:712)
> at org.apache.activemq.broker.BrokerFilter.sendToDeadLetterQueue(BrokerFilter.java:257)
> at org.apache.activemq.broker.BrokerFilter.sendToDeadLetterQueue(BrokerFilter.java:257)
> at org.apache.activemq.broker.BrokerFilter.sendToDeadLetterQueue(BrokerFilter.java:257)
> at org.apache.activemq.broker.MutableBrokerFilter.sendToDeadLetterQueue(MutableBrokerFilter.java:270)
> at org.apache.activemq.broker.region.RegionBroker.messageExpired(RegionBroker.java:679)
> at org.apache.activemq.broker.region.PrefetchSubscription.dispatchPending(PrefetchSubscription.java:491)
> - locked <0xdb314578> (a java.lang.Object)
> at org.apache.activemq.broker.region.PrefetchSubscription.add(PrefetchSubscription.java:144)
> at org.apache.activemq.broker.region.Queue.iterate(Queue.java:929)
> - locked <0xaf905fc8> (a org.apache.activemq.broker.region.Queue$2)
> at org.apache.activemq.thread.DeterministicTaskRunner.runTask(DeterministicTaskRunner.java:84)
> at org.apache.activemq.thread.DeterministicTaskRunner$1.run(DeterministicTaskRunner.java:41)
> the full jstack output and bot broker configs are attached.
> activemq.xml is the config of the central broker.
> activemq-embedded.xml is the config of the embbed one.
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