Celery compatibility with windows

[Thomas De Schampheleire]

2017-08-04 20:23 GMT+02:00 Dominik Ruf <dominikruf at gmail.com>:
>
>
> On Wed, Aug 2, 2017, 19:44 Thomas De Schampheleire
> <patrickdepinguin at gmail.com> wrote:
>>
>> 2017-08-02 19:06 GMT+02:00 Dominik Ruf <dominikruf at gmail.com>:
>> > Hi all,
>> >
>> > while working on
>> > https://bitbucket.org/conservancy/kallithea/pull-requests/357
>> > I noticed, that even though the PR fixes the broken celery functionality
>> > on
>> > linux,
>> > it still does not work on windows. I'm not even sure it can be fixed on
>> > windows.
>>
>> With Pylons+Celery3 things still worked on Windows, and
>
> I have to (re-)check that. I'm not sure anymore.
>>
>>  with
>> TurboGears2+Celery3 it no longer works, even with your fixes, is that
>> correct?
>
> Yes
>>
>>
>> Can you describe the problem you see on Windows?
>
> The tasks do not get registered.
>>
>> Why do you think it
>> could maybe not be solvable?
>
> It seems to be related on how the worker processes are forked. But that is
> an early guess.
>>
>> I would assume that if Celery3 is supposed to work on Windows, and it
>> has worked for us with Pylons, then it is also possible to make it
>> work with TG2. If needed, we can request support or changes from
>> Alessandro Molina.
>>
>> > And Celery 4 officially dropped windows support
>> >
>> > http://docs.celeryproject.org/en/latest/whatsnew-4.0.html#removed-features
>> >
>
> What about this part?

So their statement is: "The test suite is passing, and Celery seems to
be working with Windows, but we make no guarantees".

Celery 4 claims to have solved a 'massive list of bugs' compared to
Celery 3, so we should actually try to upgrade, although this then may
mean future failures on Windows.

I personally don't care about Windows, but I think we do have Windows
users judging from some of the past issues regarding installation on
Windows / IIS.



>>
>> > So this raises the question, do we want to
>> > a) drop windows support as well
>> > b) switch to something different (maybe twisted)
>> > c) try to fix it on windows and stay on celery 3 (for ever!?)
>>
>> I would start with c) up to the point where we are blocked and cannot
>> resolve it.
>>
>> a) would mean to drop support for task offloading on Windows, not
>> fully dropping Windows support of Kallithea, right?
>
> Right. But I thing a fairly big kallithea installation needs celery.
>>
>>
>> b) could also be an option, but I have no experience with any of the
>> alternatives.
>>
>> Best regards,
>> Thomas
>
>
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