code: def test_actor_owner_worker_dies_before_dependency_ready(
      ray_start_cluster,
  ):
      """Test actor owner worker dies before local dependencies are resolved.
      This test verifies the scenario where owner worker
      has failed before actor dependencies are resolved.
      Reference: https://github.com/ray-project/ray/pull/8045
      """
  
      @ray.remote
      class Actor:
          def __init__(self, dependency):
              print("actor: {}".format(os.getpid()))
              self.dependency = dependency
  
          def f(self):
              return self.dependency
  
      @ray.remote
      class Owner:
          def get_pid(self):
              return os.getpid()
  
          def create_actor(self, caller_handle):
              s = SignalActor.remote()
              # Create an actor which depends on an object that can never be
              # resolved.
              actor_handle = Actor.remote(s.wait.remote())
  
              pid = os.getpid()
              signal_handle = SignalActor.remote()
              caller_handle.call.remote(
                  pid, signal_handle, actor_handle
              )
              # Wait until the `Caller` start executing the remote `call` method.
              ray.get(signal_handle.wait.remote())
              # exit
              os._exit(0)
  
      @ray.remote
      class Caller:
          def call(self, owner_pid, signal_handle, actor_handle):
              # Notify the `Owner` that the `Caller` is executing the remote
              # `call` method.
              ray.get(signal_handle.send.remote())
              # Wait for the `Owner` to exit.
              wait_for_pid_to_exit(owner_pid)
              oid = actor_handle.f.remote()
              # It will hang without location resolution protocol.
              ray.get(oid)
  
          def hang(self):
              return True
  
      owner = Owner.remote()
      owner_pid = ray.get(owner.get_pid.remote())
  
      caller = Caller.remote()
      owner.create_actor.remote(caller)
      # Wait for the `Owner` to exit.
      wait_for_pid_to_exit(owner_pid)
      # It will hang here if location is not properly resolved.
      wait_for_condition(lambda: ray.get(caller.hang.remote()))
  
imports: import atexit
  import asyncio
  import collections
  import numpy
  import os
  import pytest
  import signal
  import sys
  import time
  import ray
  from ray.actor import exit_actor
  import ray.cluster_utils
  from ray._private.test_utils import wait_for_condition, wait_for_pid_to_exit, generate_system_config_map, SignalActor
label_desc: Use image node_id 12 for calling a global function with example usage: test_actor_owner_worker_dies_before_dependency_ready(ray_start_cluster) and returns: self, os, True