PM79085: Startup failures may be seen when using very large topologies.

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APAR status

  • Closed as program error.

Error description

  • During startup, unnecessary remote calls to catalog servers
    were being made from each container for every container in the
    core group as each container joined the core group.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All WebSphere eXtreme Scale users,          *
    *                  especially users with large topologies.     *
    ****************************************************************
    * PROBLEM DESCRIPTION: During startup, unnecessary remote      *
    *                      calls to catalog servers are being      *
    *                      made from each container  server for    *
    *                      every                                   *
    *                      container in the core group as each     *
    *                      container joined the core group.        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The unnecessary remote calls result in a greater load on the
    data grid during startup.  This slow container server
    startup
    and might cause startup failures in very
    large topologies.
    

Problem conclusion

  • The remote calls were removed.  The calls are now only
    made
    during
    a
    failure
    scenario.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM79085

  • Reported component name

    WS EXTREME SCAL

  • Reported component ID

    5724X6702

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-12-13

  • 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:

850

Reference #:

PM79085

Modified date:

2013-01-31

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