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From Xiangrui Meng <men...@gmail.com>
Subject [ANNOUNCEMENT] Plan for dropping Python 2 support
Date Mon, 03 Jun 2019 15:45:24 GMT
Hi all,

Today we announced the plan for dropping Python 2 support
<http://spark.apache.org/news/plan-for-dropping-python-2-support.html> [1]
in Apache Spark:

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 <https://python3statement.org/> [2]. 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 (excluding patch
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.

Best,
Xiangrui

[1]: http://spark.apache.org/news/plan-for-dropping-python-2-support.html
[2]: https://python3statement.org/

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