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https://issues.apache.org/jira/browse/SPARK-31240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takeshi Yamamuro resolved SPARK-31240.
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Resolution: Duplicate
> Constant fold deterministic Scala UDFs with foldable arguments
> --------------------------------------------------------------
>
> Key: SPARK-31240
> URL: https://issues.apache.org/jira/browse/SPARK-31240
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Kris Mok
> Priority: Major
>
> Constant fold deterministic Scala UDFs with foldable arguments,
> conservatively.
> ScalaUDFs that meet all following criteria are subject to constant folding in
> this feature:
> * deterministic
> * all arguments are foldable
> * does not throw an exception when evaluating the UDF for constant folding
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