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From Gary Tully <gary.tu...@gmail.com>
Subject Re: NPE in broker => inoperative broker
Date Tue, 21 Jul 2009 13:08:20 GMT
This has cropped up once or twice in the past few months. I did a
quick inspection between the current trunk and the 5.2 tag and it
looks like not much has changed in this logic around setting up the
internal producerInfo (which appears to be null). For this reason I
suspect that the issue still exists on trunk.

Could you raise a jira issue for this and attach what you have so that
we can start to track this down. The key would be having a
reproducible scenario description or test case.

Do you know of the connection on  tcp:///127.0.0.1:55870 is from a
client or from another networked broker?

previous reference from the user list:
http://www.nabble.com/What-can-be-the-reason---td21750762.html#a21750762


2009/7/21 craig mcmillan <craig@trampolinesystems.com>:
> hi,
>
> i'm seeing an NPE in my broker, after which the broker is inoperable without
> a restart. below is the amq related logging upto the first occurence of the
> NPE. there's no obvious cause, and prior to the NPE the broker had been
> working fine for 19 hours or so, logging pretty much nothing, and had
> processed a few hundred thousand messages
>
> ring any bells with anyone ?
>
> thanks
>
> craig
>
> -------------------------------->
>
> 20 Jul 2009 14:01:21,134 INFO  [BrokerService] (main:) - Using Persistence
> Adapter:
> AMQPersistenceAdapter(/home/sonar/sonar/local_storage/production_devcrunch01-reeep/amq)
> 20 Jul 2009 14:01:21,219 INFO  [KahaStore] (main:) - Kaha Store using data
> directory
> /home/sonar/sonar/local_storage/production_devcrunch01-reeep/amq/kr-store/state
> 20 Jul 2009 14:01:21,348 INFO  [BrokerService] (main:) - ActiveMQ 5.2.0 JMS
> Message Broker (sonar-production-devcrunch01-reeep) is starting
> 20 Jul 2009 14:01:21,348 INFO  [BrokerService] (main:) - For help or more
> information please see: http://activemq.apache.org/
> 20 Jul 2009 14:01:21,527 INFO  [KahaStore] (main:) - Kaha Store using data
> directory
> /home/sonar/sonar/local_storage/production_devcrunch01-reeep/amq/kr-store/data
> 20 Jul 2009 14:01:21,595 INFO  [TransportServerThreadSupport] (main:) -
> Listening for connections at: tcp://devcrunch01:50639
> 20 Jul 2009 14:01:21,667 INFO  [TransportConnector] (main:) - Connector
> openwire Started
> 20 Jul 2009 14:01:21,668 INFO  [BrokerService] (main:) - ActiveMQ JMS
> Message Broker (sonar-production-devcrunch01-reeep,
> ID:devcrunch01-55590-1248098481379-0:0) started
> 20 Jul 2009 14:02:19,904 INFO  [DiscoveryTransport] (Multicast Discovery
> Agent Notifier:) - Adding new broker connection URL: tcp://devcrunch01:50639
> 20 Jul 2009 14:02:19,934 INFO  [FailoverTransport] (ActiveMQ Task:) -
> Successfully connected to tcp://devcrunch01:50639
> 20 Jul 2009 14:36:24,989 INFO  [DiscoveryTransport] (Multicast Discovery
> Agent Notifier:) - Adding new broker connection URL: tcp://devcrunch01:50639
> 20 Jul 2009 19:53:24,757 INFO  [DiscoveryTransport] (Multicast Discovery
> Agent Notifier:) - Adding new broker connection URL: tcp://devcrunch01:50639
> 20 Jul 2009 19:53:25,249 WARN  [FailoverTransport] (ActiveMQ Transport:
> tcp://localhost/127.0.0.1:50639:) - Transport failed to
> tcp://devcrunch01:50639 , attempting to automatically reconnect due to:
> java.net.SocketException: Connection reset
> 20 Jul 2009 19:53:25,322 INFO  [FailoverTransport] (ActiveMQ Task:) -
> Successfully reconnected to tcp://devcrunch01:50639
> 21 Jul 2009 09:03:59,091 INFO  [DiscoveryTransport] (Multicast Discovery
> Agent Notifier:) - Adding new broker connection URL: tcp://devcrunch01:50639
> 21 Jul 2009 09:03:59,341 INFO  [FailoverTransport] (ActiveMQ Task:) -
> Successfully reconnected to tcp://devcrunch01:50639
> 21 Jul 2009 09:03:59,362 WARN  [FailoverTransport] (InactivityMonitor Async
> Task: java.util.concurrent.ThreadPoolExecutor$Worker@719bd84b:) - Transport
> failed to tcp://devcrunch01:50639 , attempting to automatically reconnect
> due to: org.apache.activemq.transport.InactivityIOException: Channel was
> inactive for too long: localhost/127.0.0.1:50639
> 21 Jul 2009 09:04:14,136 ERROR [Service] (ActiveMQ Transport:
> tcp:///127.0.0.1:55870:) - Async error occurred:
> java.lang.NullPointerException
> java.lang.NullPointerException
>        at org.apache.activemq.broker.region.Queue.send(Queue.java:328)
>        at
> org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:350)
>        at
> org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:437)
>        at
> org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:224)
>        at
> org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:126)
>        at
> org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:95)
>        at
> org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:133)
>        at
> org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:450)
>        at
> org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:639)
>        at
> org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:305)
>        at
> org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:179)
>        at
> org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:68)
>        at
> org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:143)
>        at
> org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:206)
>        at
> org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:84)
>        at
> org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:203)
>        at
> org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:185)
>        at java.lang.Thread.run(Thread.java:619)
>
>



-- 
http://blog.garytully.com

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