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PI74119: Delayed closure of keepalive connections during graceful process termination on z/OS

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • During graceful process termination, closure of keepalive
    connections can be delayed.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users of IBM HTTP Server 8.5 on z/OS        *
    ****************************************************************
    * PROBLEM DESCRIPTION: Keepalive connection closure may be     *
    *                      delayed.                                *
    ****************************************************************
    * RECOMMENDATION:  Apply this fix if using IHS 8.5 on z/OS     *
    ****************************************************************
    Currently, keepalive connections are reset at process exit.
    This creates a race that becomes quite wide if graceful
    process exit is delayed by a handler or a full/long lingering
    close.
    

Problem conclusion

  • Updated to send the initial FIN on the list of async keepalive
    connections as soon as possible.  New optional directive
    "IHSDrainKeepaliveConnectionsDuringShutdown" further controls
    this behavior.
    
    This fix is targeted for IBM HTTP Server fix packs:
    - 8.5.5.12
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI74119

  • Reported component name

    WAS IHS ZOS

  • Reported component ID

    5655I3510

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-12-25

  • Closed date

    2017-02-14

  • Last modified date

    2017-05-01

  • 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

    WAS IHS ZOS

  • Fixed component ID

    5655I3510

Applicable component levels

  • R850 PSY

       UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022