PM96747: CWOBJ4910 message incorrectly appears on catalog servers in multi-master replication topologies.

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APAR status

  • Closed as program error.

Error description

  • CWOBJ4910 message incorrectly appears on catalog servers in
    multi-master replication topologies
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  WebSphere eXtreme Scale users that          *
    *                  experience server failure or a network      *
    *                  connectivity problem.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: Container servers experience null       *
    *                      pointer exceptions during a failure or  *
    *                      connectivity problems. Some             *
    *                      placement updates for partitions and    *
    *                      routing information do not happen in    *
    *                      a timely manner.                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    During some server failure or network connectivity problems,
    the container servers experience NullPointerExceptions
    when communicating with the catalog servers. These
    exceptions can delay returning information to the catalog
    server. The exceptions are seen in the FFDC files
    of the container servers. The exceptions originate
    in the
    com.ibm.ws.objectgrid.catalog.wrapper.IDLPlacementServiceProxy
    class's invoke method.
    Example FFDC:
    key = java.lang.NullPointerException
    com.ibm.ws.objectgrid.container.ServerAgent$LeaderViewThread.run
    737
    Exception = java.lang.NullPointerException
    Source =
    com.ibm.ws.objectgrid.container.ServerAgent$LeaderViewThread.run
    probeid = 737
    Stack Dump = java.lang.NullPointerException
     ‚    ‚   at
    com.ibm.ws.objectgrid.catalog.wrapper.IDLPlacementServiceProxy.i
    nvoke(IDLPlacementServiceProxy.java:141)
     ‚    ‚   at $Proxy2.heartbeat(Unknown Source)
     ‚    ‚   at
    com.ibm.ws.objectgrid.catalog.wrapper.PlacementServiceWrapper.he
    artbeat(PlacementServiceWrapper.java:222)
     ‚    ‚   at
    com.ibm.ws.objectgrid.container.ServerAgent$LeaderViewThread.run
    (ServerAgent.java:822)
     ‚    ‚   at java.lang.Thread.run(Thread.java:770)
    

Problem conclusion

  • This was fixed in the latest cumulative iFix.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM96747

  • Reported component name

    WS EXTREME SCAL

  • Reported component ID

    5724X6702

  • Reported release

    860

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-09-10

  • Closed date

    2013-09-13

  • Last modified date

    2013-09-13

  • 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

    WS EXTREME SCAL

  • Fixed component ID

    5724X6702

Applicable component levels

  • R850 PSY

       UP

  • R860 PSY

       UP



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Document information


More support for:

WebSphere eXtreme Scale

Software version:

860

Reference #:

PM96747

Modified date:

2013-09-13

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