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https://issues.apache.org/jira/browse/SPARK-28057?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Herman van Hovell resolved SPARK-28057.
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Resolution: Fixed
Fix Version/s: 3.0.0
> Add method `clone` in catalyst TreeNode
> ---------------------------------------
>
> Key: SPARK-28057
> URL: https://issues.apache.org/jira/browse/SPARK-28057
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Maryann Xue
> Assignee: Maryann Xue
> Priority: Minor
> Fix For: 3.0.0
>
>
> Add implementation for {{clone}} method in {{TreeNode}}, for de-duplicating
> instances in the LogicalPlan tree. This is a prerequisite for SPARK-23128.
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