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Posted to issues@spark.apache.org by "Maxim Gekk (JIRA)" <ji...@apache.org> on 2019/01/17 20:39:00 UTC

[jira] [Commented] (SPARK-26651) Use Proleptic Gregorian calendar

    [ https://issues.apache.org/jira/browse/SPARK-26651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16745482#comment-16745482 ] 

Maxim Gekk commented on SPARK-26651:
------------------------------------

[~hvanhovell][~cloud_fan][~srowen] This is the umbrella ticket related to moving on java.time classes and on Proleptic Gregorian calendar. I am going to add a few more sub-tasks here.

> Use Proleptic Gregorian calendar
> --------------------------------
>
>                 Key: SPARK-26651
>                 URL: https://issues.apache.org/jira/browse/SPARK-26651
>             Project: Spark
>          Issue Type: Umbrella
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Maxim Gekk
>            Priority: Major
>
> Spark 2.4 and previous versions use a hybrid calendar - Julian + Gregorian in date/timestamp parsing, functions and expressions. The ticket aims to switch Spark on Proleptic Gregorian calendar, and use java.time classes introduced in Java 8 for timestamp/date manipulations. One of the purpose of switching on Proleptic Gregorian calendar is to conform to SQL standard which supposes such calendar.



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