Ray actor with detached lifetime error, Job finishes as driver exits. Marking all non-terminal tasks as failed

I have create Detached actor and ran a function meanwhile exited driver.

mport ray


@ray.remote
class Greeter:
    def __init__(self, value):
        self.value = value
        import time
        for i in range(100):
            time.sleep(1)
            print('########', i)

    def say_hello(self):
        import time
        for i in range(100):
            time.sleep(1)
            print('########', i)
        return self.value


a = Greeter.options(lifetime="detached", name="g1").remote("Old Greeting")
a.say_hello.remote()
# Driver exits

Is it supported?

On the dashboard it give error,

Error Type: WORKER_DIED

Job finishes (01000000) as driver exits. Marking all non-terminal tasks as failed.