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Re: [DISCUSS] Re-think CI strategy?


It would be good to test all Python versions in a cron build, but I
agree we may not need to test all Python 3 versions in per-commit builds.

Regards

Antoine.


Le 07/08/2018 à 03:14, Robert Nishihara a écrit :
> Thanks Wes.
> 
> As for Python 3.5, 3.6, and 3.7, I think testing any one of them should be
> sufficient (I can't recall any errors that happened with one version and
> not the other).
> 
> On Mon, Aug 6, 2018 at 12:01 PM Wes McKinney <wesmckinn@xxxxxxxxx> wrote:
> 
>> @Robert, it looks like NumPy is making LTS releases until Jan 1, 2020
>>
>>
>> https://docs.scipy.org/doc/numpy-1.14.0/neps/dropping-python2.7-proposal.html
>>
>> Based on this, I think it's fine for us to continue to support Python
>> 2.7 until then. It's only 16 months away; are you all ready for the
>> next decade?
>>
>> We should also discuss if we want to continue to build and test Python
>> 3.5. From download statistics it appears that there are 5-10x as many
>> Python 3.6 users as 3.5. I would prefer to drop 3.5 and begin
>> supporting 3.7 soon.
>>
>> @Antoine, I think we can avoid building the C++ codebase 3 times, but
>> it will require a bit of retooling of the scripts. The reason that
>> ccache isn't working properly is probably because the Python include
>> directory is being included even for compilation units that do not use
>> the Python C API.
>> https://github.com/apache/arrow/blob/master/cpp/CMakeLists.txt#L721.
>> I'm opening a JIRA about fixing this
>> https://issues.apache.org/jira/browse/ARROW-2994
>>
>> Created https://issues.apache.org/jira/browse/ARROW-2995 about
>> removing the redundant build cycle
>>
>> On Mon, Aug 6, 2018 at 2:19 PM, Robert Nishihara
>> <robertnishihara@xxxxxxxxx> wrote:
>>>>
>>>> Also, at this point we're sometimes hitting the 50 minutes time limit on
>>>> our slowest Travis-CI matrix job, which means we have to restart it...
>>>> making the build even slower.
>>>>
>>> Only a short-term fix, but Travis can lengthen the max build time if you
>>> email them and ask them to.
>>
> 



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