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From "Justin Pitts (JIRA)" <j...@apache.org>
Subject [jira] Updated: (AMQ-2199) NullPointerException during broker start on brokerid
Date Wed, 08 Apr 2009 03:17:37 GMT

     [ https://issues.apache.org/activemq/browse/AMQ-2199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Justin Pitts updated AMQ-2199:
------------------------------

    Summary: NullPointerException during broker start on brokerid   (was: Race condition during
broker start on brokerid)

> NullPointerException during broker start on brokerid 
> -----------------------------------------------------
>
>                 Key: AMQ-2199
>                 URL: https://issues.apache.org/activemq/browse/AMQ-2199
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.1.0, 5.2.0
>         Environment: Debian 5 x86 / vmware esx
>            Reporter: Justin Pitts
>
> I have a configuration where I first start application A with an embedded broker that
is not initiating any broker-to-broker connections.
> Then, in rapid succession, I start applications B, C, and D, all with embedded brokers
that are initiating broker-to-broker connections only to A. Often, this is all on the same
machine.
> I commonly - but not always - see the following: (this stack trace is 5.1. I have seen
this issue on 5.2 also)
> java.lang.NullPointerException
>         at org.apache.activemq.network.DemandForwardingBridgeSupport.contains(DemandForwardingBridgeSupport.java:748)
>         at org.apache.activemq.network.DemandForwardingBridgeSupport.serviceRemoteConsumerAdvisory(DemandForwardingBridgeSupport.java:471)
>         at org.apache.activemq.network.DemandForwardingBridgeSupport.serviceRemoteCommand(DemandForwardingBridgeSupport.java:416)
>         at org.apache.activemq.network.DemandForwardingBridgeSupport$2.onCommand(DemandForwardingBridgeSupport.java:154)
>         at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:104)
>         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:196)
>         at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:183)
>         at java.lang.Thread.run(Thread.java:619) 
> The brokerId field is null. I don't see where localBrokerPath[0] is ever set to anything
but null.

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