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Posted to users@activemq.apache.org by "Litton, Tom - CEPM" <To...@cepm-us.com> on 2006/04/28 23:10:13 UTC

NPE when closing

I'm running a broker embedded in a tomcat server.  I'm getting a NullPointerException when the server is shut down.
 
The exception stack trace is:
java.lang.NullPointerException
        at org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnect
ion.java:1137)
        at org.apache.activemq.ActiveMQConnection.close(ActiveMQConnection.java:
540)
 
The transport class is org.apache.activemq.transport.vm.VMTransportServer$1  It looks like the VM transport server never responds to the request to shutdown.  The call to Transport.request times out and returns null.
 
Has anyone seen this problem before?  Is it a problem with the way i'm setting up the VM transport?

My transport configuration is:
    <transportConnectors>
       <transportConnector name="default" uri="vm://localhost" />
       <transportConnector name="external" uri="tcp://localhost:61616" />
    </transportConnectors>
 
Thanks for any help you can provide.
 
Tom

 


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Re: NPE when closing

Posted by James Strachan <ja...@gmail.com>.
On 4/28/06, Litton, Tom - CEPM <To...@cepm-us.com> wrote:
> I'm running a broker embedded in a tomcat server.  I'm getting a NullPointerException when the server is shut down.
>
> The exception stack trace is:
> java.lang.NullPointerException
>         at org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnect
> ion.java:1137)
>         at org.apache.activemq.ActiveMQConnection.close(ActiveMQConnection.java:
> 540)

BTW that is a wrapped exception; the real cause of the exception is
not that line; an exception has been received on the client side of a
broker exception that occurs when trying to close. I wonder is there
any chance of seeing the full stack trace (which hopefully includes
the nested exception with the real stack trace in it)

--

James
-------
http://radio.weblogs.com/0112098/

Re: NPE when closing

Posted by James Strachan <ja...@gmail.com>.
Which version are you using? FWIW you don't need to configure the VM
transport in the activemq.xml - not that this is the cause of your
problem.

On 4/28/06, Litton, Tom - CEPM <To...@cepm-us.com> wrote:
> I'm running a broker embedded in a tomcat server.  I'm getting a NullPointerException when the server is shut down.
>
> The exception stack trace is:
> java.lang.NullPointerException
>         at org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnect
> ion.java:1137)
>         at org.apache.activemq.ActiveMQConnection.close(ActiveMQConnection.java:
> 540)
>
> The transport class is org.apache.activemq.transport.vm.VMTransportServer$1  It looks like the VM transport server never responds to the request to shutdown.  The call to Transport.request times out and returns null.
>
> Has anyone seen this problem before?  Is it a problem with the way i'm setting up the VM transport?
>
> My transport configuration is:
>     <transportConnectors>
>        <transportConnector name="default" uri="vm://localhost" />
>        <transportConnector name="external" uri="tcp://localhost:61616" />
>     </transportConnectors>
>
> Thanks for any help you can provide.
>
> Tom
>
>
>
>
> ----------------------------------------------------------------------
> The information contained in this transmission is intended only for
> the personal and confidential use of the designated recipients named
> herein.  If the reader of this transmission is not the intended
> recipient or an agent responsible for delivering it to the intended
> recipient, you are hereby notified that you have received this
> transmission in error, and that any review, dissemination,
> distribution, or copying of this transmission is strictly prohibited.
> If you have received this communication in error, please notify the
> sender and return and delete the original transmission immediately.
> Thank you.
>
>
>


--

James
-------
http://radio.weblogs.com/0112098/