[Core] The *args **kwargs parameters of the __new__ method are missing during actor initialization.

[MissiontoMars]

What happened + What you expected to happen

*args and **kwargs parameters in __new__ of an actor always empty, it seems that the parameters are being ignored by Ray. See: https://github.com/ray-project/ray/blob/master/python/ray/_raylet.pyx#L2068

Versions / Dependencies

This issue exists in all versions.

Reproduction script

import ray

ray.init()

@ray.remote
class TestWorker:
    def __init__(self, *args, **kwargs):
        print(f'This is __init__ {args} {kwargs}')

    def __new__(cls, *args, **kwargs):
        print(f'This is __new__ {args}, {kwargs}')
        return super().__new__(cls)

    def foo(self):
        return 10000

worker = TestWorker.remote(100)

print(ray.get(worker.foo.remote()))

We got:

python3.9 ./mytest/test_new.py 2024-02-20 16:21:53,693 INFO worker.py:1652 -- Started a local Ray instance. View the dashboard at 127.0.0.1:8265 This is __new__ (), {} (pid=28948) This is __new__ (), {} 10000 (TestWorker pid=28948) This is init (100,) {}

Issue Severity

High: It blocks me from completing my task.

[MissiontoMars]

@rkooo567 Could you help triage this issue?

[jjyao]

@MissiontoMars do you mind creating a PR to fix it?

[MissiontoMars]

@MissiontoMars do you mind creating a PR to fix it?

OK, i will try to fix it.