[jboss-jira] [JBoss JIRA] Commented: (JBMESSAGING-1220) When an JBM client encounters an OOM, it causes to hang the JBM server

[Tyronne Wickramarathne (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBMESSAGING-1220?page=comments#action_12402691 ] 
            
Tyronne Wickramarathne commented on JBMESSAGING-1220:
-----------------------------------------------------

Remoting team confirmed that, they have implemented a way to prevent this on JBR-2.2.2-brew. How this is achieved is by setting separate time out parameter for callback clients on the Remoting configuration. The http://jira.jboss.com/jira/browse/JBREM-765 describes this fix in detail.

on the Connector MBean config you have to add the callbackTimeout attribute as follows :

   <mbean code="org.jboss.remoting.transport.Connector"
                  name="jboss.messaging:service=Connector,transport=bisocket"
                  display-name="Bisocket Transport Connector">
              <attribute name="Configuration">
                 <config>
                    <invoker transport="bisocket">
                       <attribute name="marshaller" isParam="true">org.jboss.jms.wireformat.JMSWireFormat</attribute>
                        .............................
                        .............................
                        <attribute name="callbackTimeout">10000</attribute>  <!-- HERE -->
                        .............................
                        .............................
                        </invoker>
                    <handlers>
                       <handler subsystem="JMS">org.jboss.jms.server.remoting.JMSServerInvocationHandler</handler>
                    </handlers>
         </config>
      </attribute>
   </mbean>

> When an JBM client encounters an OOM, it causes to hang the JBM server
> ----------------------------------------------------------------------
>
>                 Key: JBMESSAGING-1220
>                 URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1220
>             Project: JBoss Messaging
>          Issue Type: Bug
>          Components: Messaging Core
>    Affects Versions: 1.4.0.SP3_CP01
>         Environment: Fedora 8, JBM-1.4.0-SP3, JDK-1.5.0_14
>            Reporter: Tyronne Wickramarathne
>         Assigned To: Tyronne Wickramarathne
>             Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
>
>         Attachments: stack_traces.zip, testcase.zip, testcase_win32.zip
>
>
> 1. Connect a JMS Topic Subscriber with limited memory (e.g. -Xmx64m), that buffers an infinite number of messages.
> 2. Publish messages to JBM, on the same subscribed topic, until the client runs out of memory.
> 3. Try to connect another client, publish more messages, etc. You should see the problem at this point.
> 4. Kill the OOM client. The system should recover.
> 5. at this point, the JBM server gets hanged

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