def increment(self, counter_name, delta=1):
    self._shard_state.counters_map.increment(counter_name, delta)
Set the file's current position.
dataset/ETHPy150Open livid/v2ex/mapreduce/context.py/Counters.increment--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/files/records.py/RecordsReader.seek