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https://issues.apache.org/jira/browse/SPARK-32298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-32298:
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    Assignee:     (was: Apache Spark)

> tree models prediction optimization
> -----------------------------------
>
>                 Key: SPARK-32298
>                 URL: https://issues.apache.org/jira/browse/SPARK-32298
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>    Affects Versions: 3.1.0
>            Reporter: zhengruifeng
>            Priority: Minor
>
> in {{Node}}'s method
>  
> {color:#e0957b}def {color}{color:#c7a65d}predictImpl{color}(features: 
> Vector): LeafNode
>  
> use while-loop instead of the recursive way.



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