Transition instance IDs are not consistent due to execution tree compaction/expansion

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    • Type: Bug Report
    • Resolution: Won't Fix
    • Priority: L3 - Default
    • None
    • Affects Version/s: None
    • Component/s: engine
    • None

      When retrieving a transition instance, its ID may change although in fact the very same transition instance still exists. This may lead to confusing behavior when working with the activity/transition instance tree.

      Example:

      ActivityInstance activityInstance = runtimeService.getActivityInstance(processInstance.getId());
TransitionInstance transitionInstance = findTransitionInstanceIn(activityInstance);

runtimeService.cancelTransitionInstance(transitionInstance.getId());

      The last instruction may fail although the transition instance (aka async job) still exists.

      Impact on Cockpit:
      When multiple users inspect a process instance at the same time and both try to modify the instance (not necessarily in parallel), modification may fail due to this bug.

      The reason is execution tree expansion/compaction and the implementation that uses the IDs of the executions performing the async job as the transition instance ID. After expansion/compaction, the execution may be a different one and in effect, the transition instance ID has changed.

        This is the controller panel for Smart Panels app

              Assignee:
              Unassigned
              Reporter:
              Thorben Lindhauer
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                Created:
                Updated:
                Resolved: