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https://issues.apache.org/jira/browse/SPARK-26651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-26651:
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    Assignee: Apache Spark  (was: Maxim Gekk)

> 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
>            Assignee: Apache Spark
>            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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