IZ03917: R-TEMS SHUTDOWN DELAYED WHEN HUB IS DOWN

APAR status

• Closed as program error.

Error description

• * Environment:
  HUB & RTEMS on Unix / Linux - FP05
  
  * Problem Description:
    If the Hub TEMS is shutdown first, the RTEMS
    takes a long time to shutdown.
    Shutdown is delayed due to RPC timeouts at
    the remote TEMS.  The fix is to eliminate
    unnecessary RTEMS heartbeats during
    shutdown, thereby shortening the wait time.
    Refer to the internal CMVC defect 53570.
  
  * Detailed Recreation Procedure:
    Stop HUB and then R-TEMS.
  
  * Related Files and Output:
    N/A
  
  * Approver:
    H.T.
  

Local fix

Problem summary

• The RTEMS takes a long time to shutdown if the HUB is gone.
  

Problem conclusion

• After HUB connection is lost, the RTEMS IB/Sitmon
  and the KFA nodestatus processing will keep trying to
  reestablish the connection to the HUB. The retries consist of
  location broker lookup and re-registration
  operations. Since the hub is gone, these location broker
  operation can take a long time to time out especially on
  machines that have multiple network
  interfaces. Before these operations return, the shutdown
  procession of the component issuing these retry requests will
  not be able to proceed hence delaying
  the overall TEMS shutdown process.
  
  Another source of delay is after all the TEMS sub-processes have
  returned from shutdown, the data server component of the TEMS
  proceeds to destroy any oustanding requests and paths to the
  HUB. Since the HUB is no longer there, each
  destroy operation will incur a rpc time out, further delaying
  the shutdown process.
  
  The fix for this APAR is included in the following maintenance
  vehicle:
      | interim fix | 6.1.0.6-TIV-ITM-IF0005
  
  Note: Search the IBM Technical support web site for maintenance
  package availability
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  OA22509 OA24187 OA24621 OA24622

Fix information

• Fixed component name

  TEMS

• Fixed component ID

  5724C04MS

Applicable component levels

• R610 PSY

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