JR47047: UPDATES ON WORK BASKET ASSIGNMENTS WITH MANY TASKS MAY LEAD TO 'WORKITEM UPDATE IN PROGRESS" EXCEPTION

8.0.1.1-WS-BPMADV-IFJR47047
7.5.1.1-WS-BPMADV-IFJR47047
Version 8.0.1 Fix Pack 2 for the IBM Business Process Manager products
Version 8.5.0 Fix Pack 1 for the IBM Business Process Manager products
Version 7.5.1 Fix Pack 2 for the IBM Business Process Manager products
Version 8.5 Refresh Pack 5 for the IBM Business Process Manager products

APAR status

• Closed as program error.

Error description

• Work Baskets with many tasks in it need to execute updates on
  assignments asynchronously.
  Currently, this update is done too often what leads to the
  situation that multiple asynchronous updates try to run in
  parallel.
  This iFix optimizes the detection so only necessary updates are
  executed. Additionally, it allows asynchronous updates to run
  in parallel
  

Local fix

• The value for which asynchronous processing is used can be
  increased to the number of tasks in the work basket.  To do
  this the HTM Container Custom Property WorkItem.UpdateSlice
  (the default is 500) needs to be changed.
  

Problem summary

• When updating people assignments on work baskets with a large
  number of tasks, the following exception is encountered:
  
    com.ibm.task.api.UnexpectedFailureException: CWTKA0003E:
      Unexpected exception during execution.
    java.lang.RuntimeException: WorkItem update in progress
  
  The update on this WorkBasket is rolled back.
  
  
  PROBLEM DETAILED DESCRIPTION:
  This interim fix first improves the detection of changes in
  people assignments passed in via REST API.
  Before this interim fix, unchanged people assignments were seen
  as updates by mistake. This issue itself is only a performance
  issue, but leads to real problems in combination with the next
  issue.
  The second issue exists if changes to multiple people
  assignments happen and the work basket contains many tasks, two
  independent asynchronous WorkItem update operation are started
  to be able to split the work into multiple database
  transactions. This must not happen, as a WorkItem update
  operation must run only once per deployment target at one time.
  

Problem conclusion

• The interim fix collects all people assignment changes within
  that WorkBasket update operation and runs them as one
  asynchonous WorkItem update operation.
  
  
  FIX AVAILABILITY:
  iFix for 7.5.1.1 is available on Fix Central, search for APAR
  JR47047 at http://www.ibm.com/support/fixcentral/
  iFix for 8.0.1.1 is available on Fix Central, search for APAR
  JR47047 at http://www.ibm.com/support/fixcentral/
  
  Fix is also targetted for inclusion in next fixpack for BPM
  V7.5.1, BPM 8.0.1, BPM 8.5.0
  
  When obtaining any of the above fixes, be sure to download the
  accompanying readme, for itself and any prerequisite fixes, and
  review them thorougly.
  

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

  BPM ADVANCED

• Fixed component ID

  5725C9400

Applicable component levels

• R751 PSY

     UP