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https://issues.apache.org/jira/browse/SPARK-22130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16181129#comment-16181129
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Apache Spark commented on SPARK-22130:
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User 'kiszk' has created a pull request for this issue:
https://github.com/apache/spark/pull/19355
> UTF8String.trim() inefficiently scans all white-space string twice.
> -------------------------------------------------------------------
>
> Key: SPARK-22130
> URL: https://issues.apache.org/jira/browse/SPARK-22130
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.2.0
> Reporter: Kazuaki Ishizaki
> Priority: Minor
>
> {{UTF8String.trim()}} scans a string including only white space (e.g. {{"
> "}}) twice inefficiently.
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