code: def testNumpyFetchedAfterWorkerFailure(self):
      with self.strategy.scope():
          v = variables.Variable(initial_value=0, dtype=dtypes.int32)
  
      @def_function.function
      def worker_fn():
          return v + 1, v - 1
  
      remote_value = self.cluster_coord.schedule(worker_fn)
      # Attempt to fetch before killing worker task should succeed.
      self.assertEqual((1, -1), remote_value.fetch())
      self._cluster.kill_task("worker", 0)
      # So should attempt to fetch after killing worker task.
      self.assertEqual((1, -1), remote_value.fetch())
  
imports: import gc
  import os
  import sys
  import threading
  import time
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.distribute import multi_worker_test_base
  from tensorflow.python.distribute import parameter_server_strategy_v2
  from tensorflow.python.distribute import test_util
  from tensorflow.python.distribute.cluster_resolver.cluster_resolver import SimpleClusterResolver
  from tensorflow.python.distribute.coordinator import cluster_coordinator
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import check_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import random_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.training import coordinator
  from tensorflow.python.training import server_lib
label_desc: Use image node_id 19 for calling the BaseFaultToleranceTest obj's underlying member method code with example usage: obj.testNumpyFetchedAfterWorkerFailure() and returns: unknown,  unknown