code: def _incr_counter(self, *args):
          
          if len(args) == 2:
              # backwards compatibility with existing hadoop jobs
              group_name, count = args
              print('reporter:counter:%s,%s' % (group_name, count), file=sys.stderr)
          else:
              group, name, count = args
              print('reporter:counter:%s,%s,%s' % (group, name, count), file=sys.stderr)
docs: Increments a Hadoop counter.
  
          Note that this seems to be a bit slow, ~1 ms
  
          Don't overuse this function by updating very frequently.