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https://issues.apache.org/jira/browse/SPARK-31579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17126329#comment-17126329
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Sudharshann D. commented on SPARK-31579:
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Hey [~maxgekk], friendly ping :)
> Replace floorDiv by / in localRebaseGregorianToJulianDays()
> -----------------------------------------------------------
>
> Key: SPARK-31579
> URL: https://issues.apache.org/jira/browse/SPARK-31579
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Maxim Gekk
> Priority: Minor
> Labels: starter
>
> Most likely utcCal.getTimeInMillis % MILLIS_PER_DAY == 0 but need to check
> that for all available time zones in the range of [0001, 2100] years with the
> step of 1 hour or maybe smaller. If this hypothesis is confirmed, floorDiv
> can be replaced by /, and this should improve performance of
> RebaseDateTime.localRebaseGregorianToJulianDays.
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