[GitHub] [spark] MaxGekk opened a new pull request #24185: [SPARK-27252][SQL] Make current_date() independent from time zones

[GitBox <gi...@apache.org>]

MaxGekk opened a new pull request #24185: [SPARK-27252][SQL] Make current_date() independent from time zones
URL: https://github.com/apache/spark/pull/24185
 
 
   ## What changes were proposed in this pull request?
   
   This makes the `CurrentDate` expression and `current_date` function independent from time zone settings. New result is number of days since epoch in `UTC` time zone. Previously, Spark shifted the current date (in `UTC` time zone) according the session time zone which violets definition of `DateType` - number of days since epoch (which is an absolute point in time, midnight of Jan 1 1970 in UTC time). 
   
   The changes makes `CurrentDate` consistent to `CurrentTimestamp` which is independent from time zone too. 
   
   ## How was this patch tested?
   
   The changes were tested by existing test suites like `DateExpressionsSuite`.

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