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https://issues.apache.org/jira/browse/SPARK-8301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davies Liu resolved SPARK-8301.
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Resolution: Fixed
Fix Version/s: 1.5.0
> Improve UTF8String substring/startsWith/endsWith/contains performance
> ---------------------------------------------------------------------
>
> Key: SPARK-8301
> URL: https://issues.apache.org/jira/browse/SPARK-8301
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Reynold Xin
> Priority: Critical
> Fix For: 1.5.0
>
>
> Many functions in UTF8String are unnecessarily expensive.
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