JR64243: TASK STAYS IN RECEIVED STATUS AFTER TASK HAS BEEN CLOSED

APAR status

• Closed as program error.

Error description

• You see this issue intermittently when REST API
  "/rest/bpm/wle/v1/coachflow/instancedata" fails to claim the
  task implicitly.
  You may see the following stack trace in log file.
  
  [8/16/21 16:54:48:877 SAST] 00025c92 TaskDAO       E
  com.lombardisoftware.server.ejb.persistence.dao.TaskDAO
  assignTask Failed to update PO Task.2764194796, query details:
  updateSql: update LSW_TASK set LAST_MODIFIED_DATETIME = ?,
  USER_ID = ?, GROUP_ID = ? where TASK_ID = ?  and USER_ID = ?
  and GROUP_ID = ?  and LAST_MODIFIED_DATETIME = ?
  columns: [LAST_MODIFIED_DATETIME, USER_ID, GROUP_ID, TASK_ID,
  USER_ID, GROUP_ID, LAST_MODIFIED_DATETIME]
  values: [2021-08-16 16:54:48.834, 409910, -378488, 2764194796,
  -1, 378488, 2021-08-16 16:54:48.431]
  
  com.lombardisoftware.core.ConcurrentModificationException:
  Failed to update PO Task.2764194796, query details:
  updateSql: update LSW_TASK set LAST_MODIFIED_DATETIME = ?,
  USER_ID = ?, GROUP_ID = ? where TASK_ID = ?  and USER_ID = ?
  and GROUP_ID = ?  and LAST_MODIFIED_DATETIME = ?
  columns: [LAST_MODIFIED_DATETIME, USER_ID, GROUP_ID, TASK_ID,
  USER_ID, GROUP_ID, LAST_MODIFIED_DATETIME]
  values: [2021-08-16 16:54:48.834, 409910, -378488, 2764194796,
  -1, 378488, 2021-08-16 16:54:48.431]
      at
  com.lombardisoftware.server.ejb.persistence.dao.UnversionedPODAO
  .doUpdate(UnversionedPODAO.java:1085)
      at
  com.lombardisoftware.server.ejb.persistence.dao.TaskDAO.assignTa
  sk(TaskDAO.java:392)
      at
  com.lombardisoftware.server.ejb.api.TaskAPICore.assignTask(TaskA
  PICore.java:162)
  ...
      at
  com.lombardisoftware.server.ejb.psapi.TaskAPIFacadeCore.assignTa
  sk(TaskAPIFacadeCore.java:61)
  ...
      at
  com.ibm.bpm.rest.impl.task.TaskResource.claim(TaskResource.java:
  1061)
  ...
      at
  com.ibm.bpm.rest.impl.coachflow.InstanceDataResource.getInstance
  Data(InstanceDataResource.java:199)
  
  [8/16/21 16:54:48:962 SAST] 00025731 CFEController E
  com.ibm.bpm.coachflow.servlet.CFEControllerServlet
  finishTaskWithException Task.2764194796 / BPDInstance.9396099 /
  User.409910: Error: The server responded with an error code 500
  when accessing the url
  "/rest/bpm/wle/v1/coachflow/instancedata". Contact your system
  administrator.
  
  [8/16/21 16:57:07:351 SAST] 00026ac3 tokenTrace    1
  com.lombardisoftware.bpd.component.flowcomponent.activity.worker
  .notification.TaskActivityCompletedNotification creating
  notification TaskActivityCompletionNotification for token:
  BPDToken(bpdInstanceId=BpmnInstanceId(9396099), tokenId=135,
  locationId =
  BPDObjectIdImpl(f9559933-5600-4ce7-82dc-e9a119e33b26))
  
  [8/16/21 16:57:07:384 SAST] 00026ac3 RoutingAPIFac E
  CWLLG2229E: An exception occurred in an EJB call.  Error: Cannot
  resume the BPD Instance with Id "BPDInstance.9396099". The
  previous resume completed with errors.
  
  com.lombardisoftware.bpd.runtime.engine.quartz.BPDIncorrectExecu
  tionStatus: Cannot resume the BPD Instance with Id
  "BPDInstance.9396099". The previous resume completed with
  errors.
      at
  com.lombardisoftware.bpd.runtime.engine.util.BPDEngineUtils.asse
  rtProperExecutionStatus(BPDEngineUtils.java:1229)
      at
  com.lombardisoftware.server.ejb.psapi.RoutingAPIFacadeCore$1.doE
  xecuteDuringLock(RoutingAPIFacadeCore.java:196)
  ...
      at
  com.lombardisoftware.server.ejb.psapi.RoutingAPIFacadeCore.compl
  eteTaskAndResumeImmediately(RoutingAPIFacadeCore.java:223)
  ...
  
  PRODUCTS AFFECTED
  IBM Business Automation Workflow
  

Local fix

Problem summary

• The issue is caused by concurrency race condition, allowing the
  task to be claimed by the same user via another REST API
  invocation..
  

Problem conclusion

• A fix is available or will be available that ensures the task
  moving to Closed status when this task finishes.
  

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

  BUS AUTO WORKFL

• Fixed component ID

  5737H4100

Applicable component levels