PM21272: CLEAR OPERATION DEADLOCKS GRID

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When a user issues clear operation on a map, that already
    has a pending transaction, it is possible to deadlock the map.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of WebSphere eXtreme Scale        *
    ****************************************************************
    * PROBLEM DESCRIPTION: The Objectmap clear operation never     *
    *                      completes because a deadlock occurs     *
    *                      when another thread is in the           *
    *                      middle of a transaction.                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Deadlock occurred because two threads were in commit phase,
    each waiting the other thread to complete.
    

Problem conclusion

  • The eXtreme Scale runtime was updated to handle the error
    condition to avoid deadlock condition.  This
    change will be published in future cumulative fixes for the
    Version 6.1, Version 7.0, and Version 7.1 releases.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM21272

  • Reported component name

    XD EXTREME SCAL

  • Reported component ID

    5724J3402

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-08-25

  • Closed date

    2010-10-01

  • Last modified date

    2010-10-01

  • 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

    XD EXTREME SCAL

  • Fixed component ID

    5724J3402

Applicable component levels

  • R610 PSY

       UP

  • R700 PSY

       UP

  • R710 PSY

       UP



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Document information


More support for:

WebSphere eXtreme Scale
General

Software version:

7.0

Reference #:

PM21272

Modified date:

2010-10-01

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