TFE_DeleteTensorHandle(handle_0);

  TFE_DeleteContext(ctx_0);
  TFE_DeleteContext(ctx_1);

  worker_server1.release();
  worker_server2.release();
}

tensorflow::ServerDef CreateSingleHostServerDef(
    const tensorflow::ServerDef& cluster_server_def, int task_index) {
  tensorflow::ServerDef single_host_server_def;
  single_host_server_def.set_job_name("worker");