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https://issues.apache.org/jira/browse/SPARK-27252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-27252:
-----------------------------------
Assignee: Maxim Gekk
> Make current_date() independent from time zones
> -----------------------------------------------
>
> Key: SPARK-27252
> URL: https://issues.apache.org/jira/browse/SPARK-27252
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Maxim Gekk
> Assignee: Maxim Gekk
> Priority: Minor
>
> The CurrentDate expression produces a result of DateType which is by
> definition number of days since epoch (in UTC time zone). Current
> implementation shifts the number of days according to session time zone
> `spark.sql.session.timeZone`. Result of shifting cannot be considered as
> number of days since epoch in UTC time zone, and cannot have type `DateType`.
> There are many reasons that makes the result invalid. For example:
> # zone offset depends on an instant in UTC timezone, and zone offset of
> `spark.sql.session.timeZone` in shifted date may have different value.
> # Result of shifting cannot be considered as number of days since epoch
> anymore.
> The ticket aims to make `current_date` independent from time zone, and to
> return the current date in UTC time zone.
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