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PI81394: CLEARMAKE MAY STALL WITH A "DEFUNCT" CHILD PROCESS DURING BUILDSON LINUX

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • When performing builds using clearmake on a IBM Rational
    ClearCase Linux host, builds have been observed to stall in some
    environments.
    
    Investigation has revealed that it is possible for clearmake to
    a child process termination event. When this happens, it does
    not reap the child process (rendering it "defunct"), and will
    wait indefinitely.
    

Local fix

  • The apparently most effective method to limit the issue is to
    set CCASE_SHELL_REQUIRED to any value, which forces all child
    processes to execute in their own subshell instead of being
    executed directly by clearmake. This seems to limit, but not
    eliminate the issue.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of ClearCase clearmake.                                *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * When performing builds using clearmake on a ClearCase Linux  *
    * host, builds have been observed to stall in some             *
    * environments.                                                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    

Problem conclusion

  • A fix is available in ClearCase versions 9.0.0.5 and 9.0.1.1
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI81394

  • Reported component name

    CC&CC MSITE WIN

  • Reported component ID

    5724G3300

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-05-10

  • Closed date

    2017-09-15

  • Last modified date

    2017-09-15

  • 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

    CC&CC MSITE WIN

  • Fixed component ID

    5724G3300

Applicable component levels

  • R900 PSY

       UP

  • R901 PSY

       UP

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSSH3S","label":"Rational ClearCase MultiSite"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"900"}]

Document Information

Modified date:
16 June 2021