PH35447: PROPERTY TO ENABLE PREFERENCE TO USE LOCAL CONNECTION BETWEEN COMPUTE GRID SCHEDULER AND ENDPOINT SERVERS

APAR status

• Closed as new function.

Error description

• When Job Schedulers and Endpoint servers are available on
  several LPARs, the Scheduler can select an Endpoint on any LPAR
  to run the job, not necessarily the one on which it is running
  (local). If DB2 becomes unavailable on one of the LPARs, it can
  affect the update of the status table and subsequent job status
  communication to Schedulers on the other LPAR. An option to
  select a preference to have the Scheduler disperse jobs to
  Endpoint servers on the same LPAR (prefer local) would reduce
  the impact.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  *                  Java Batch                                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: A property to enable preference to      *
  *                      dispatch batch jobs to servers on the   *
  *                      same node as the Job Scheduler          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When Job Schedulers and Endpoint servers are available on
  several nodes, the Scheduler can select an Endpoint on any node
  to run the job, not necessarily the one on which it is running
  (local). If the backend becomes unavailable on one of the nodes,
  it can affect the update of the status table and subsequent job
  status communication to Job Schedulers on the other node.
  An option to select a preference to have the Job Scheduler
  dispatch jobs to Endpoint servers on the same node (prefer
  local)
  would reduce the impact.
  

Problem conclusion

• A new Job Scheduler custom property has been added:
  PreferLocalDispatch
  
  When defined as true, a Job Scheduler will prefer to dispatch
  jobs
  to servers hosting the application on the same node as it.  If
  not
  are available, or there was a problem during the dispatch, it
  will
  dispatch to the next available server as before.
  
  The fix for this APAR is targeted for inclusion in fix pack
  9.0.5.9 and 8.5.5.20. For more information, see 'Recommended
  Updates for WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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:

Fix information

• Fixed component name

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels