Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/20786#discussion_r175955388
--- Diff: mllib/src/main/scala/org/apache/spark/ml/tree/Node.scala ---
@@ -84,35 +86,73 @@ private[ml] object Node {
/**
* Create a new Node from the old Node format, recursively creating
child nodes as needed.
*/
- def fromOld(oldNode: OldNode, categoricalFeatures: Map[Int, Int]): Node
= {
+ def fromOld(oldNode: OldNode, categoricalFeatures: Map[Int, Int],
--- End diff --
Please fix scala style (here and elsewhere)
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