def _run_step(self, step_num, step_type, input_path, output_path,
                  working_dir, env):
        raise NotImplementedError("Subclass must implement this method")
Get the byte length of the map
dataset/ETHPy150Open Yelp/mrjob/mrjob/sim.py/SimMRJobRunner._run_step--crossover with--dataset/ETHPy150Open chriso/gauged/gauged/structures/sparse_map.py/SparseMap.byte_length