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https://issues.apache.org/jira/browse/SPARK-31630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan updated SPARK-31630:
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Parent: SPARK-31404
Issue Type: Sub-task (was: Bug)
> Skip timestamp rebasing after 1900-01-01
> ----------------------------------------
>
> Key: SPARK-31630
> URL: https://issues.apache.org/jira/browse/SPARK-31630
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0, 3.1.0
> Reporter: Maxim Gekk
> Assignee: Maxim Gekk
> Priority: Major
> Fix For: 3.0.0
>
>
> The conversions of Catalyst's DATE/TIMESTAMPS to/from Java's types
> java.sql.Date/java.sql.Timestamps have almost the same implementation except
> addition rebasing op. If we look at switch and diffs arrays of all available
> time zones, we can detect that there is a time point when all diffs are 0.
> This is 1900-01-01 00:00:00Z. So, we can compare input micros with the time
> point and skip conversion for modern timestamps.
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