什么时候可以支持Ray 2.xx

[sheldon123z]

使用ray 1.8 太局限了，很多功能和用法已经过时了，请求支持ray2.xx

[Morphlng]

The API for RLlib 2.x is still rapidly changing. The final stable version for "old stack" api is 2.8.1, and the latest version 2.49.1 has pretty much changed everything again (to RLModule based "new stack"). The latest version also contains a lot of "TODO", expecting to change in the near future.

If a migration is on going, which exact version would you prefer? I think that's why they (MARLlib) is not in further development for now.

[gunnxx]

@Morphlng Since MARLLIB uses ray==1.8.0, do you know whether the API does not change much on ray==1.11.0? I am trying to read the documentation but couldnt find 1.8.0.

[Morphlng]

@Morphlng Since MARLLIB uses ray==1.8.0, do you know whether the API does not change much on ray==1.11.0? I am trying to read the documentation but couldnt find 1.8.0.

@gunnxx A lot have changed in 1.9.0~1.10.0. The most impactful one is the build_xx_policy function is deprecated, which is heavily used in MARLlib for customizing algorithm.

If you are only looking for the document of Ray 1.8.0, it is possible to download the source code, and build document only:

Source code: https://github.com/ray-project/ray/archive/refs/tags/ray-1.8.0.zip
Building step: https://github.com/ray-project/ray/tree/ray-1.8.0/doc

Or if you're willing to, you may look into the rst file on github directly: https://github.com/ray-project/ray/tree/ray-1.8.0/doc/source