code: private void unregisterJobFromHighAvailability() {
  		try {
  			runningJobsRegistry.setJobFinished(jobGraph.getJobID());
  		}
  		catch (Throwable t) {
  			log.error("Could not un-register from high-availability services job {} ({})." +
  					"Other JobManager's may attempt to recover it and re-execute it.",
  					jobGraph.getName(), jobGraph.getJobID(), t);
  		}
  	}
docs: Marks this runner's job as not running. Other JobManager will not recover the job
  after this call.
  
  <p>This method never throws an exception.