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

["Jacek Laskowski (JIRA)" <ji...@apache.org>]

Jacek Laskowski created SPARK-14730:
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             Summary: Expose ColumnPruner as feature transformer
                 Key: SPARK-14730
                 URL: https://issues.apache.org/jira/browse/SPARK-14730
             Project: Spark
          Issue Type: Improvement
          Components: ML
    Affects Versions: 2.0.0
            Reporter: Jacek Laskowski
            Priority: Minor


>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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