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https://issues.apache.org/jira/browse/SPARK-28514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-28514.
-------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 25256
[https://github.com/apache/spark/pull/25256]
> Remove the redundant transformImpl method in RF & GBT
> -----------------------------------------------------
>
> Key: SPARK-28514
> URL: https://issues.apache.org/jira/browse/SPARK-28514
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 3.0.0
> Reporter: zhengruifeng
> Assignee: zhengruifeng
> Priority: Minor
> Fix For: 3.0.0
>
>
> In GBTClassifier & RandomForestClassifier, the real transform methods inherit
> from ProbabilisticClassificationModel which can deal with multi output
> columns.
> The transformImpl method, which deals with only one column - predictionCol,
> completely does nothing. This is quite confusing.
>
>
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