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https://issues.apache.org/jira/browse/SPARK-58139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nikolina Vraneš updated SPARK-58139:
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Description:
BinBySuite covers a DST spring-forward (23-hour day) LTZ case but not the
fall-back (25-hour day) case. They are asymmetric: spring-forward shortens a
day and fall-back lengthens it, and bin_distribute_ratio divides overlap by
real elapsed microseconds, so a bin over the 25-hour day must get a larger
share than an adjacent 24-hour day.
Add test coverage for a 1-day LTZ bin across the 2024-11-03 fall-back in
America/Los_Angeles, and a compound multi-day width across a DST transition.
Test-only.
Sub-task of SPARK-57133.
> Add BIN BY DST fall-back test coverage
> --------------------------------------
>
> Key: SPARK-58139
> URL: https://issues.apache.org/jira/browse/SPARK-58139
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 5.0.0
> Reporter: Nikolina Vraneš
> Priority: Major
>
> BinBySuite covers a DST spring-forward (23-hour day) LTZ case but not the
> fall-back (25-hour day) case. They are asymmetric: spring-forward shortens a
> day and fall-back lengthens it, and bin_distribute_ratio divides overlap by
> real elapsed microseconds, so a bin over the 25-hour day must get a larger
> share than an adjacent 24-hour day.
> Add test coverage for a 1-day LTZ bin across the 2024-11-03 fall-back in
> America/Los_Angeles, and a compound multi-day width across a DST transition.
> Test-only.
> Sub-task of SPARK-57133.
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