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https://issues.apache.org/jira/browse/SPARK-3711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14150987#comment-14150987
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Apache Spark commented on SPARK-3711:
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User 'saucam' has created a pull request for this issue:
https://github.com/apache/spark/pull/2561
> Optimize where in clause filter queries
> ---------------------------------------
>
> Key: SPARK-3711
> URL: https://issues.apache.org/jira/browse/SPARK-3711
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.1.0
> Reporter: Yash Datta
> Priority: Minor
> Fix For: 1.1.1
>
>
> The In case class is replaced by a InSet class in case all the filters are
> literals, which uses a hashset instead of Sequence, thereby giving
> significant performance improvement. Maximum improvement should be visible in
> case small percentage of large data matches the filter list
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