[SPARK-14730] Expose ColumnPruner as feature transformer

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Incomplete
• Component/s: ML
• Labels: bulk-closed
• Assignee: Unassigned
• Reporter: Jacek Laskowski
• Shepherd: Yanbo Liang
• Created: 19/Apr/16 14:47
• Updated: 21/May/19 07:36
• Resolved: 21/May/19 07:36

Description

From [e-mail]:

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)?

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.

Issue Links

• Is contained by: SPARK-15540 RFormula and R feature processing improvement umbrella
• links to: [Github] Pull Request #12614 (BenFradet)