[Bug] Upgrade to gRPC 1.46 once it's released (which fixes fork support)

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• I searched the issues and found no similar issues.

Ray Component

Ray Core

What happened + What you expected to happen

With the new 1.44.0 grpcio package there’s an error message:

E0219 11:51:45.606983573  985146 fork_posix.cc:70]           Fork support is only compatible with the epoll1 and poll polling strategies
E0219 11:51:45.717404158  985146 fork_posix.cc:70]           Fork support is only compatible with the epoll1 and poll polling strategies
2022-02-19 11:51:46,630 INFO services.py:1338 -- View the Ray dashboard at http://127.0.0.1:8265
E0219 11:51:46.633503280  985146 fork_posix.cc:70]           Fork support is only compatible with the epoll1 and poll polling strategies
E0219 11:51:46.638523511  985146 fork_posix.cc:70]           Fork support is only compatible with the epoll1 and poll polling strategies

Repro script:

import ray

ray.init()

Versions / Dependencies

Tested with Ray ~1.9 and ~1.10 on an Ubuntu 20.04. This was introduced by grpcio 1.44 (tested it with 1.43 and 1.42, those don’t have this issue).

Reproduction script

See above.

Anything else

The ERROR log was changed to INFO in this PR: https://github.com/grpc/grpc/pull/17341 Then it was changed back in this PR: https://github.com/grpc/grpc/pull/28566

I don’t know if this is an upstream issue or this has any implications to Ray that was masked previously by the INFO log.

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

[vakker]

@HeyItsBethany3 I just downgraded to grpcio==1.43, which is a workaround until there’s a more fundamental fix.

[pcmoritz]

For some reason, this is one of the top viewed pages on github: