[jira] [Resolved] (SPARK-14730) Expose ColumnPruner as feature transformer

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-14730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-14730.
----------------------------------
    Resolution: Incomplete

> Expose ColumnPruner as feature transformer
> ------------------------------------------
>
>                 Key: SPARK-14730
>                 URL: https://issues.apache.org/jira/browse/SPARK-14730
>             Project: Spark
>          Issue Type: New Feature
>          Components: ML
>            Reporter: Jacek Laskowski
>            Priority: Minor
>              Labels: bulk-closed
>
> From dev@spark.apache.org:
> {quote}
> Jacek:
> Came across `private class ColumnPruner` with "TODO(ekl) make this a
> public transformer" in scaladoc, cf.
> https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/feature/RFormula.scala#L317.
> Why is this private and is there a JIRA for the TODO(ekl)?
> {quote}
> {quote}
> Yanbo Liang:
> This is due to ColumnPruner is only used for RFormula currently, we did not expose it as a feature transformer.
> Please feel free to create JIRA and work on it.
> {quote}



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