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https://issues.apache.org/jira/browse/SPARK-22695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16278812#comment-16278812
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Apache Spark commented on SPARK-22695:
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User 'mgaido91' has created a pull request for this issue:
https://github.com/apache/spark/pull/19900
> Avoid the generation of useless mutable states by scalaUDF
> ----------------------------------------------------------
>
> Key: SPARK-22695
> URL: https://issues.apache.org/jira/browse/SPARK-22695
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Marco Gaido
>
> ScalaUDF is defining mutable states which are not needed. This is bad for the
> well known issues related to constant pool limits.
> I will submit a PR soon.
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