code: def _reset(self):
      with self.lock:
          self._keys_in_use = collections.Counter()
          self._key_to_dataset = {}
          self._dataset_to_key = {}
          self._dataset_properties = {}
  
file_path: horovod/horovod/spark/common/cache.py
imports: import collections
  import contextlib
  import threading
label_desc: Use image node_id 10 for calling the TrainingDataCache obj's underlying member method code with example usage: obj._reset() without return types