code: def _check_mr_state(cls, state, mr_id):
      
      if state is None:
        logging.warning(
            "Mapreduce State for job %s is missing. Dropping Task.",
            mr_id)
        return False
      if not state.active:
        logging.warning(
            "Mapreduce %s is not active. Looks like spurious task "
            "execution. Dropping Task.", mr_id)
        return False
      return True
docs: Check MapreduceState.
  
      Args:
        state: an MapreduceState instance.
        mr_id: mapreduce id.
  
      Returns:
        True if state is valid. False if not and this task should be dropped.