[jira] [Commented] (SPARK-25652) Wrong datetime conversion between Java and Python

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-25652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16641369#comment-16641369 ] 

Hyukjin Kwon commented on SPARK-25652:
--------------------------------------

Mind describing what's expected output and why it's wrong?

> Wrong datetime conversion between Java and Python 
> --------------------------------------------------
>
>                 Key: SPARK-25652
>                 URL: https://issues.apache.org/jira/browse/SPARK-25652
>             Project: Spark
>          Issue Type: Bug
>          Components: PySpark
>    Affects Versions: 2.3.0
>            Reporter: Maciej Bryński
>            Priority: Major
>
> Hi,
> I found strange behaviour of Spark when using datetime from night of changing date (in CET).
> df.collect()
> {code}
> [Row(start_time=datetime.datetime(2017, 10, 29, 2, 1, 44, fold=1))]
> {code}
> df.show()
> {code}
> +-------------------+
> |         start_time|
> +-------------------+
> |2017-10-29 02:01:44|
> +-------------------+
> {code}
> As you can see fold is added to Python part.
> Python 3.6
> Data came from MySQL database datetime column with value "2017-10-29 02:01:44"



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