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https://issues.apache.org/jira/browse/SPARK-14796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15251368#comment-15251368
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Apache Spark commented on SPARK-14796:
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User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/12562
> Add spark.sql.optimizer.minSetSize config option
> ------------------------------------------------
>
> Key: SPARK-14796
> URL: https://issues.apache.org/jira/browse/SPARK-14796
> Project: Spark
> Issue Type: Improvement
> Components: Optimizer
> Reporter: Dongjoon Hyun
>
> Currently, `OptimizeIn` optimizer replaces `In` expression into `InSet`
> expression if the size of set is greater than a constant, 10.
> This issue aims to make a configuration `spark.sql.optimizer.minSetSize` for
> that.
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