class_docstr: Manages a TensorFlow estimator for training.
class_docstr_tok: ["Manages","a","TensorFlow","estimator","for","training","."]
docstr: Attempts to shut down the worker.
docstr_tok: ["Attempts","to","shut","down","the","worker","."]
code: def shutdown(self) -> None:
      """Attempts to shut down the worker."""
      del self.estimator
  
file_path: BigDL/python/orca/src/bigdl/orca/learn/tf/tf_runner.py
imports: from contextlib import closing
  import json
  import logging
  import os
  import socket
  import ray
  from bigdl.dllib.utils.log4Error import invalidInputError
  from typing import TYPE_CHECKING, Any
label_desc: Use image node_id 6 for calling the TFRunner obj's underlying member method code with example usage: obj.shutdown() without return types