docs: def _hdfs_datanode_metrics(self, beans, tags):
          """
          Process HDFS Datanode metrics from given beans
          """
          # Only get the first bean
          bean = next(iter(beans))
          bean_name = bean.get('name')
  
          self.log.debug("Bean name retrieved: {}".format(bean_name))
  
          for metric, (metric_name, metric_type) in iteritems(self.HDFS_METRICS):
              metric_value = bean.get(metric)
              if metric_value is not None:
                  self._set_metric(metric_name, metric_type, metric_value, tags)