PM77187: Errors occur when you deploy large-scale environments.

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APAR status

  • Closed as program error.

Error description

  • The replication mechanism has problems scaling.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of WebSphere eXtreme Scale        *
    ****************************************************************
    * PROBLEM DESCRIPTION: LockTimeout and TransactionTimeout      *
    *                      occur with other transactions that      *
    *                      were waiting on the locks held by the   *
    *                      long transaction.                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The replication mechanism used by the catalog servers had an
    algorithm that did not scale linearly with the size of the data
    being replicated. This results in exponentially longer commit
    time in the catalog server as the size of the transactions
    increase. The transaction time increases for some transactions
    as the size of the data grid increases by the number of
    containers or number of partitions.
    

Problem conclusion

  • The algorithm was modified to scale linearly.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM77187

  • 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

    2012-11-15

  • Closed date

    2012-11-29

  • Last modified date

    2012-11-29

  • 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



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Document information


More support for:

WebSphere eXtreme Scale

Software version:

850

Reference #:

PM77187

Modified date:

2012-11-29

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