PM64371: In a multimaster replication environment, data might be corrupted.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • A primary in one domain can send back data to a primary in a
    second domain that it has already applied.  This scenario was
    not handled correctly, which can result in old data overwriting
    more recent data or entries being removed that should still
    exist.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users of WebSphere eXtreme Scale who are    *
    *                  using multimaster replication in an         *
    *                  environment with multiple domains.          *
    ****************************************************************
    * PROBLEM DESCRIPTION: In a multimaster replication            *
    *                      topology, a timing window exists        *
    *                      where data can become mismatched        *
    *                      between domains.                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A problem was fixed so that a domain can send back changes to
    the domain that made the changes.  With three or more domains,
    where that entry might have changed already, the original
    change might be re-applied, which causes the data to be
    outdated or erroneously removed.
    

Problem conclusion

  • The fix for this APAR is available in WebSphere eXtreme Scale
    Version 8.5. Fix Pack 1 and later releases.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM64371

  • 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

    2012-05-10

  • Closed date

    2012-06-01

  • Last modified date

    2012-06-01

  • 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 #:

PM64371

Modified date:

2012-06-01

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