code: public void processIncomingAccumulators(JobID jobID,
  			Map<String, Accumulator<?, ?>> newAccumulators) {
  		synchronized (this.jobAccumulators) {
  			
  //			System.out.println("JobManager: Received accumulator result for job "
  //					+ jobID.toString());
  //			System.out.println(AccumulatorHelper.getAccumulatorsFormated(newAccumulators));
  			
  			JobAccumulators jobAccumulators = this.jobAccumulators.get(jobID);
  			if (jobAccumulators == null) {
  				jobAccumulators = new JobAccumulators();
  				this.jobAccumulators.put(jobID, jobAccumulators);
  				cleanup(jobID);
  			}
  			jobAccumulators.processNew(newAccumulators);
  		}
  	}
docs: Merges the new accumulators with the existing accumulators collected for
  the job.