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From Denny Lee <denny.g....@gmail.com>
Subject Re: Should python-2 be supported in Spark 3.0?
Date Sat, 01 Jun 2019 01:22:50 GMT
+1

On Fri, May 31, 2019 at 17:58 Holden Karau <holden@pigscanfly.ca> wrote:

> +1
>
> On Fri, May 31, 2019 at 5:41 PM Bryan Cutler <cutlerb@gmail.com> wrote:
>
>> +1 and the draft sounds good
>>
>> On Thu, May 30, 2019, 11:32 AM Xiangrui Meng <mengxr@gmail.com> wrote:
>>
>>> Here is the draft announcement:
>>>
>>> ===
>>> Plan for dropping Python 2 support
>>>
>>> As many of you already knew, Python core development team and many
>>> utilized Python packages like Pandas and NumPy will drop Python 2 support
>>> in or before 2020/01/01. Apache Spark has supported both Python 2 and 3
>>> since Spark 1.4 release in 2015. However, maintaining Python 2/3
>>> compatibility is an increasing burden and it essentially limits the use of
>>> Python 3 features in Spark. Given the end of life (EOL) of Python 2 is
>>> coming, we plan to eventually drop Python 2 support as well. The current
>>> plan is as follows:
>>>
>>> * In the next major release in 2019, we will deprecate Python 2 support.
>>> PySpark users will see a deprecation warning if Python 2 is used. We will
>>> publish a migration guide for PySpark users to migrate to Python 3.
>>> * We will drop Python 2 support in a future release in 2020, after
>>> Python 2 EOL on 2020/01/01. PySpark users will see an error if Python 2 is
>>> used.
>>> * For releases that support Python 2, e.g., Spark 2.4, their patch
>>> releases will continue supporting Python 2. However, after Python 2 EOL, we
>>> might not take patches that are specific to Python 2.
>>> ===
>>>
>>> Sean helped make a pass. If it looks good, I'm going to upload it to
>>> Spark website and announce it here. Let me know if you think we should do a
>>> VOTE instead.
>>>
>>> On Thu, May 30, 2019 at 9:21 AM Xiangrui Meng <mengxr@gmail.com> wrote:
>>>
>>>> I created https://issues.apache.org/jira/browse/SPARK-27884 to track
>>>> the work.
>>>>
>>>> On Thu, May 30, 2019 at 2:18 AM Felix Cheung <felixcheung_m@hotmail.com>
>>>> wrote:
>>>>
>>>>> We don’t usually reference a future release on website
>>>>>
>>>>> > Spark website and state that Python 2 is deprecated in Spark 3.0
>>>>>
>>>>> I suspect people will then ask when is Spark 3.0 coming out then.
>>>>> Might need to provide some clarity on that.
>>>>>
>>>>
>>>> We can say the "next major release in 2019" instead of Spark 3.0. Spark
>>>> 3.0 timeline certainly requires a new thread to discuss.
>>>>
>>>>
>>>>>
>>>>>
>>>>> ------------------------------
>>>>> *From:* Reynold Xin <rxin@databricks.com>
>>>>> *Sent:* Thursday, May 30, 2019 12:59:14 AM
>>>>> *To:* shane knapp
>>>>> *Cc:* Erik Erlandson; Mark Hamstra; Matei Zaharia; Sean Owen; Wenchen
>>>>> Fen; Xiangrui Meng; dev; user
>>>>> *Subject:* Re: Should python-2 be supported in Spark 3.0?
>>>>>
>>>>> +1 on Xiangrui’s plan.
>>>>>
>>>>> On Thu, May 30, 2019 at 7:55 AM shane knapp <sknapp@berkeley.edu>
>>>>> wrote:
>>>>>
>>>>>> I don't have a good sense of the overhead of continuing to support
>>>>>>> Python 2; is it large enough to consider dropping it in Spark
3.0?
>>>>>>>
>>>>>>> from the build/test side, it will actually be pretty easy to
>>>>>> continue support for python2.7 for spark 2.x as the feature sets
won't be
>>>>>> expanding.
>>>>>>
>>>>>
>>>>>> that being said, i will be cracking a bottle of champagne when i
can
>>>>>> delete all of the ansible and anaconda configs for python2.x.  :)
>>>>>>
>>>>>
>>>> On the development side, in a future release that drops Python 2
>>>> support we can remove code that maintains python 2/3 compatibility and
>>>> start using python 3 only features, which is also quite exciting.
>>>>
>>>>
>>>>>
>>>>>> shane
>>>>>> --
>>>>>> Shane Knapp
>>>>>> UC Berkeley EECS Research / RISELab Staff Technical Lead
>>>>>> https://rise.cs.berkeley.edu
>>>>>>
>>>>>
>
> --
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