History - java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached

Current Situation

• After the events have been processed, the History Service propagates them to JOC Cockpit via the Internal EventBus interface (new threads are created).
• In some situations this leads to an OutOfMemoryError error:
  • java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached
• This means that the History service repeats the processing of events that have already been processed.

Desired Behaviour

• The fact that propagating events due to a lack of resources should have no impact on History processing and should be logged at WARNING level.