PM22617: NULLPOINTEREXCEPTION DURING EXTREME SCALE FAILOVER.

PM22469; 7.1.0: Cumulative fix 1 for eXtreme Scale version 7.1

APAR status

• Closed as program error.

Error description

• If both extreme scale client and extreme scale server service
  are in the same process. During failover, primary gets nulled
  out and hence we get a NullPointerException.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:   All users of WebSphere eXtreme Scale       *
  ****************************************************************
  * PROBLEM DESCRIPTION: A NullPointerException is logged        *
  *                      during failover when the server and     *
  *                      client are in the same process.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The following exception stack is seen in the logs:
  
  Caused by: org.omg.CORBA.INTERNAL: An internal error happened
  processing the request  vmcid: 0x0  minor code: 0  completed: No
   at
  com.ibm.ws.objectgrid.ShardImpl.processMessage(ShardImpl.java:95
  9)
   at
  com.ibm.ws.objectgrid.partition.IDLShardPOA._invoke(IDLShardPOA.
  java:190)
   at
  com.ibm.CORBA.poa.POAServerDelegate.dispatchToServant(POAServerD
  elegate.java:402)
   at
  com.ibm.CORBA.poa.POAServerDelegate.internalDispatch(POAServerDe
  legate.java:334)
   at
  com.ibm.CORBA.poa.POAServerDelegate.dispatch(POAServerDelegate.j
  ava:256)
   at com.ibm.rmi.iiop.ORB.process(ORB.java:513)
   at com.ibm.CORBA.iiop.ORB.process(ORB.java:1574)
   at com.ibm.rmi.iiop.Connection.respondTo(Connection.java:2841)
   at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2714)
   at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:63)
   at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:118)
   ... 1 more
  Caused by: java.lang.NullPointerException
   at
  com.ibm.ws.objectgrid.ShardImpl.processMessage(ShardImpl.java:93
  6)
   ... 11 more
  

Problem conclusion

• The eXtreme Scale runtime was updated to handle the error
  condition to avoid getting a NullPointerException.  This
  change will be published in future cumulative fixes for the
  Version 6.1, Version 7.0, and Version 7.1 releases.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  XD EXTREME SCAL

• Fixed component ID

  5724J3402

Applicable component levels

• R610 PSY

     UP

• R700 PSY

     UP

• R710 PSY

     UP