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https://issues.apache.org/jira/browse/SPARK-58994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ruifeng Zheng resolved SPARK-58994.
-----------------------------------
Fix Version/s: 4.0.5
4.1.4
4.2.1
4.3.0
Resolution: Fixed
Issue resolved by pull request 58277
[https://github.com/apache/spark/pull/58277]
> Fix prediction column metadata in GBTRegressionModel
> ----------------------------------------------------
>
> Key: SPARK-58994
> URL: https://issues.apache.org/jira/browse/SPARK-58994
> Project: Spark
> Issue Type: Bug
> Components: ML
> Affects Versions: 5.0.0
> Reporter: Ruifeng Zheng
> Assignee: Ruifeng Zheng
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.5, 4.1.4, 4.2.1, 4.3.0
>
>
> GBTRegressionModel.transform aliases its prediction expression with
> featuresCol and the feature
> column metadata. Although withColumns assigns the final prediction column
> name, its outer alias
> inherits the feature metadata from the inner alias. The transformed
> prediction column can therefore
> carry vector feature metadata instead of the numeric prediction metadata
> produced by
> transformSchema.
> The fix uses predictionCol and its output metadata for the prediction
> expression and adds a
> regression test comparing the transformed metadata with transformSchema.
> Pull request: https://github.com/apache/spark/pull/58277
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