PM39989: Data is lost during shard promotion with a container teardown.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • In eXtreme Scale 7.1, there is an issue regarding the promotion
    of replicas.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users with a large quantity of data that    *
    *                  might exceed normal timeouts during         *
    *                  the teardown process.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: When the teardown process occurs        *
    *                      on container server, data is lost       *
    *                      duing the shard promotion.              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    For shards have a large quantity of data that might take
    several minutes to replicate to a new shard, the container
    server teardown timeout might remove the existing primary shard
    before a new primary shard has all of the data. As a result,the
    primary
    shard seems to have lost data because the data did not
    successfully transition from the old primary shard.
    

Problem conclusion

  • Allow a new shard to copy from existing replica shards if the
    old
    primary shard is removed before the transition is complete.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM39989

  • 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

    2011-05-24

  • Closed date

    2011-07-26

  • Last modified date

    2011-07-26

  • 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

  • R700 PSY

       UP



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Document information


More support for:

WebSphere eXtreme Scale
General

Software version:

7.0

Reference #:

PM39989

Modified date:

2011-07-26

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