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https://issues.apache.org/jira/browse/SPARK-24457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-24457.
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Resolution: Incomplete
> Performance improvement while converting stringToTimestamp in DateTimeUtils
> ---------------------------------------------------------------------------
>
> Key: SPARK-24457
> URL: https://issues.apache.org/jira/browse/SPARK-24457
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Sharad Sonker
> Priority: Minor
> Labels: bulk-closed
>
> stringToTimestamp in DateTimeUtils creates Calendar instance for each input
> row even if the input timezone is same. This can be improved by caching the
> calendar instance for each input timezone.
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