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Posted to users@activemq.apache.org by Mohit Anchlia <mo...@gmail.com> on 2013/01/04 18:14:36 UTC

NullPointer on shutdown

On shutdown I get Nullpointer exception, could someone help me understand
why that might be?

  DiscoveryNetworkConnector:NC:BrokerService[pprfdaa300.id.net]. Reason:
java.lang.NullPointerException |
org.apache.activemq.network.DiscoveryNetworkConnector | ActiveMQ
ShutdownHook
java.lang.NullPointerException
        at
org.apache.activemq.transport.discovery.simple.SimpleDiscoveryAgent.stop(SimpleDiscoveryAgent.java:88)
        at
org.apache.activemq.network.DiscoveryNetworkConnector.handleStop(DiscoveryNetworkConnector.java:220)
        at
org.apache.activemq.network.NetworkConnector$1.doStop(NetworkConnector.java:65)
        at
org.apache.activemq.util.ServiceSupport.stop(ServiceSupport.java:71)
        at
org.apache.activemq.network.NetworkConnector.stop(NetworkConnector.java:206)

Re: NullPointer on shutdown

Posted by Mohit Anchlia <mo...@gmail.com>.
I added fileQueueCursor and started activemq which never came up on that
port even though process was up. I then issued "stop" that then threw this
exception.

On Fri, Jan 4, 2013 at 10:09 AM, Christian Posta
<ch...@gmail.com>wrote:

> What events lead up to the exception? Looks like a discovery agent was
> attempted to be shutdown but was never started properly. This sort of thing
> should not happen.
>
>
> On Fri, Jan 4, 2013 at 10:56 AM, Mohit Anchlia <mohitanchlia@gmail.com
> >wrote:
>
> > 5.7
> >
> > On Fri, Jan 4, 2013 at 9:49 AM, Christian Posta
> > <ch...@gmail.com>wrote:
> >
> > > What version are you on?
> > >
> > >
> > > On Fri, Jan 4, 2013 at 10:14 AM, Mohit Anchlia <mohitanchlia@gmail.com
> > > >wrote:
> > >
> > > > On shutdown I get Nullpointer exception, could someone help me
> > understand
> > > > why that might be?
> > > >
> > > >   DiscoveryNetworkConnector:NC:BrokerService[pprfdaa300.id.net].
> > Reason:
> > > > java.lang.NullPointerException |
> > > > org.apache.activemq.network.DiscoveryNetworkConnector | ActiveMQ
> > > > ShutdownHook
> > > > java.lang.NullPointerException
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.activemq.transport.discovery.simple.SimpleDiscoveryAgent.stop(SimpleDiscoveryAgent.java:88)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.activemq.network.DiscoveryNetworkConnector.handleStop(DiscoveryNetworkConnector.java:220)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.activemq.network.NetworkConnector$1.doStop(NetworkConnector.java:65)
> > > >         at
> > > > org.apache.activemq.util.ServiceSupport.stop(ServiceSupport.java:71)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.activemq.network.NetworkConnector.stop(NetworkConnector.java:206)
> > > >
> > >
> > >
> > >
> > > --
> > > *Christian Posta*
> > > http://www.christianposta.com/blog
> > > twitter: @christianposta
> > >
> >
>
>
>
> --
> *Christian Posta*
> http://www.christianposta.com/blog
> twitter: @christianposta
>

Re: NullPointer on shutdown

Posted by Christian Posta <ch...@gmail.com>.
What events lead up to the exception? Looks like a discovery agent was
attempted to be shutdown but was never started properly. This sort of thing
should not happen.


On Fri, Jan 4, 2013 at 10:56 AM, Mohit Anchlia <mo...@gmail.com>wrote:

> 5.7
>
> On Fri, Jan 4, 2013 at 9:49 AM, Christian Posta
> <ch...@gmail.com>wrote:
>
> > What version are you on?
> >
> >
> > On Fri, Jan 4, 2013 at 10:14 AM, Mohit Anchlia <mohitanchlia@gmail.com
> > >wrote:
> >
> > > On shutdown I get Nullpointer exception, could someone help me
> understand
> > > why that might be?
> > >
> > >   DiscoveryNetworkConnector:NC:BrokerService[pprfdaa300.id.net].
> Reason:
> > > java.lang.NullPointerException |
> > > org.apache.activemq.network.DiscoveryNetworkConnector | ActiveMQ
> > > ShutdownHook
> > > java.lang.NullPointerException
> > >         at
> > >
> > >
> >
> org.apache.activemq.transport.discovery.simple.SimpleDiscoveryAgent.stop(SimpleDiscoveryAgent.java:88)
> > >         at
> > >
> > >
> >
> org.apache.activemq.network.DiscoveryNetworkConnector.handleStop(DiscoveryNetworkConnector.java:220)
> > >         at
> > >
> > >
> >
> org.apache.activemq.network.NetworkConnector$1.doStop(NetworkConnector.java:65)
> > >         at
> > > org.apache.activemq.util.ServiceSupport.stop(ServiceSupport.java:71)
> > >         at
> > >
> > >
> >
> org.apache.activemq.network.NetworkConnector.stop(NetworkConnector.java:206)
> > >
> >
> >
> >
> > --
> > *Christian Posta*
> > http://www.christianposta.com/blog
> > twitter: @christianposta
> >
>



-- 
*Christian Posta*
http://www.christianposta.com/blog
twitter: @christianposta

Re: NullPointer on shutdown

Posted by Mohit Anchlia <mo...@gmail.com>.
5.7

On Fri, Jan 4, 2013 at 9:49 AM, Christian Posta
<ch...@gmail.com>wrote:

> What version are you on?
>
>
> On Fri, Jan 4, 2013 at 10:14 AM, Mohit Anchlia <mohitanchlia@gmail.com
> >wrote:
>
> > On shutdown I get Nullpointer exception, could someone help me understand
> > why that might be?
> >
> >   DiscoveryNetworkConnector:NC:BrokerService[pprfdaa300.id.net]. Reason:
> > java.lang.NullPointerException |
> > org.apache.activemq.network.DiscoveryNetworkConnector | ActiveMQ
> > ShutdownHook
> > java.lang.NullPointerException
> >         at
> >
> >
> org.apache.activemq.transport.discovery.simple.SimpleDiscoveryAgent.stop(SimpleDiscoveryAgent.java:88)
> >         at
> >
> >
> org.apache.activemq.network.DiscoveryNetworkConnector.handleStop(DiscoveryNetworkConnector.java:220)
> >         at
> >
> >
> org.apache.activemq.network.NetworkConnector$1.doStop(NetworkConnector.java:65)
> >         at
> > org.apache.activemq.util.ServiceSupport.stop(ServiceSupport.java:71)
> >         at
> >
> >
> org.apache.activemq.network.NetworkConnector.stop(NetworkConnector.java:206)
> >
>
>
>
> --
> *Christian Posta*
> http://www.christianposta.com/blog
> twitter: @christianposta
>

Re: NullPointer on shutdown

Posted by Christian Posta <ch...@gmail.com>.
What version are you on?


On Fri, Jan 4, 2013 at 10:14 AM, Mohit Anchlia <mo...@gmail.com>wrote:

> On shutdown I get Nullpointer exception, could someone help me understand
> why that might be?
>
>   DiscoveryNetworkConnector:NC:BrokerService[pprfdaa300.id.net]. Reason:
> java.lang.NullPointerException |
> org.apache.activemq.network.DiscoveryNetworkConnector | ActiveMQ
> ShutdownHook
> java.lang.NullPointerException
>         at
>
> org.apache.activemq.transport.discovery.simple.SimpleDiscoveryAgent.stop(SimpleDiscoveryAgent.java:88)
>         at
>
> org.apache.activemq.network.DiscoveryNetworkConnector.handleStop(DiscoveryNetworkConnector.java:220)
>         at
>
> org.apache.activemq.network.NetworkConnector$1.doStop(NetworkConnector.java:65)
>         at
> org.apache.activemq.util.ServiceSupport.stop(ServiceSupport.java:71)
>         at
>
> org.apache.activemq.network.NetworkConnector.stop(NetworkConnector.java:206)
>



-- 
*Christian Posta*
http://www.christianposta.com/blog
twitter: @christianposta