PM80336: In environments with co-existing WXS JVMs, upon termination of one of these JVMs, the clusterstore may stop retrieving

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APAR status

  • Closed as program error.

Error description

  • When two servers share a common JVM, and one of the servers is
    terminated, either manually or do to an external error, the
    ClusterStore will stop updating its view of the route table.
    Calls directly to the ClusterStore would result in
    empty route tables, regardless of the current state of the
    environment. Remote transactions may also fail due to
    TargetNotAvailable exceptions caused by these empty route
    tables.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users that have client Java virtual         *
    *                  machines (JVM) that are                     *
    *                  attempting                                  *
    *                  to                                          *
    *                  read                                        *
    *                  routing                                     *
    *                  information wih the ClusterStore class.     *
    ****************************************************************
    * PROBLEM DESCRIPTION: In environments with co-existing        *
    *                      WebSphere eXtreme Scale                 *
    *                      JVMs,  the clusterstore might stop      *
    *                      retrieving routes upon termination of   *
    *                      one of                                  *
    *                      these JVMs.                             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When two servers share a common JVM, and one of the servers is
    stopped, either manually or due to an external error, the
    ClusterStore stops updating its view of the route table.
    Calls directly to the ClusterStore result in empty route
    tables, regardless of the current state of the environment.
    Remote transactions might also fail due to TargetNotAvailable
    exceptions that are caused by these empty route tables.
    

Problem conclusion

  • With the logic corrected, the ClusterStore continue to
    update its view of the route table after attempts to retrieve
    the information have been made.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM80336

  • 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

    2013-01-10

  • Closed date

    2013-01-31

  • Last modified date

    2013-01-31

  • 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 #:

PM80336

Modified date:

2013-01-31

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