[Ray 1.8] "ray memory" fails with "No module named 'aiohttp.signals'"

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Ray Component

Ray Core

What happened + What you expected to happen

Hi Ray team,

I can run most ray commands like ray status and ray timeline but when I try ray memory I get the following error:

Traceback (most recent call last):
  File "/home/metalcycling/.local/bin/ray", line 8, in <module>
    sys.exit(main())
  File "/home/metalcycling/.local/lib/python3.8/site-packages/ray/scripts/scripts.py", line 1969, in main
    return cli()
 ...
  File "/home/metalcycling/.local/lib/python3.8/site-packages/ray/dashboard/optional_deps.py", line 8, in <module>
    import aiohttp.signals
ModuleNotFoundError: No module named 'aiohttp.signals'

I manually imported the code on my Python shell and while import aiohttp works, import aiohttp.signals doesn’t work. On the aio-libs page somebody reported the same issue here, so this is a problem on their side, really. But it seems they are not following their own deprecation process and that means the signals module is not available. Is there a way to fix Ray so I can use the memory utility?

Thanks, Pedro

Versions / Dependencies

metalcycling@linux:~$ python3 --version
Python 3.8.8

>>> import aiohttp
>>> aiohttp.__version__
'3.8.1'
>>> 

>>> import ray
>>> ray.__version__
'1.8.0'
>>>

Reproduction script

metalcycling@linux:~$ ray memory

Anything else

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

[2726651506]

pip install aiohttp==3.7.4

[pcmoritz]

This is a known problem that is fixed in the Ray master in https://github.com/ray-project/ray/pull/20261.

In the current Ray release you can pin aiohttp by running pip install aiohttp==3.7 which will fix it.