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https://issues.apache.org/jira/browse/SPARK-25223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takuya Ueshin resolved SPARK-25223.
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Resolution: Won't Do
> Use a map to store values for NamedLambdaVariable.
> --------------------------------------------------
>
> Key: SPARK-25223
> URL: https://issues.apache.org/jira/browse/SPARK-25223
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Takuya Ueshin
> Priority: Major
>
> Currently we use {{functionsForEval}}, {{NamedLambdaVarible}} s in which are
> replace with of arguments from the original functions, to make sure the
> lambda variables refer the same instances as of arguments, but it's pretty
> hacky.
> Instead, we can use a global map and set/get the lambda variable values in
> the map.
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