code: protected void submitReport() {
      try {
        utilizationGauger.gauge();
        rpcCollector.reportTaskTrackerUtilization(
                utilizationGauger.getTaskTrackerUtilization(),
                utilizationGauger.getLocalJobUtilization());
      } catch (IOException e) {
        LOG.error(StringUtils.stringifyException(e));
      }
    }
docs: Transmit the {@link TaskTrackerUtilization} to {@link UtilizationCollectorProtocol}
  via RPC