code: private Increment incrementAppSummary(AppAggregationKey appAggKey,
        JobDetails jobDetails) {
      Increment aggIncrement = new Increment(aggConv.toBytes(appAggKey));
      aggIncrement.addColumn(Constants.INFO_FAM_BYTES,
          AggregationConstants.TOTAL_MAPS_BYTES, jobDetails.getTotalMaps());
      aggIncrement.addColumn(Constants.INFO_FAM_BYTES,
          AggregationConstants.TOTAL_REDUCES_BYTES, jobDetails.getTotalReduces());
      aggIncrement.addColumn(Constants.INFO_FAM_BYTES,
          AggregationConstants.MEGABYTEMILLIS_BYTES,
          jobDetails.getMegabyteMillis());
      aggIncrement.addColumn(Constants.INFO_FAM_BYTES,
          AggregationConstants.SLOTS_MILLIS_MAPS_BYTES,
          jobDetails.getMapSlotMillis());
      aggIncrement.addColumn(Constants.INFO_FAM_BYTES,
          AggregationConstants.SLOTS_MILLIS_REDUCES_BYTES,
          jobDetails.getReduceSlotMillis());
      aggIncrement.addColumn(Constants.INFO_FAM_BYTES,
          AggregationConstants.SLOTS_MILLIS_REDUCES_BYTES,
          jobDetails.getReduceSlotMillis());
      aggIncrement.addColumn(Constants.INFO_FAM_BYTES,
          AggregationConstants.TOTAL_JOBS_BYTES, 1L);
  
      byte[] numberRowsCol = Bytes.toBytes(jobDetails.getJobKey().getRunId());
      aggIncrement.addColumn(AggregationConstants.SCRATCH_FAM_BYTES,
          numberRowsCol, 1L);
  
      return aggIncrement;
    }
docs: creates an Increment to aggregate job details
  @param {@link AppAggregationKey}
  @param {@link JobDetails}
  @return {@link Increment}