Github user sethah commented on a diff in the pull request:
https://github.com/apache/spark/pull/18118#discussion_r148065729
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/regression/DecisionTreeRegressor.scala
---
@@ -118,11 +119,12 @@ class DecisionTreeRegressor @Since("1.4.0")
(@Since("1.4.0") override val uid: S
/** (private[ml]) Train a decision tree on an RDD */
private[ml] def train(data: RDD[LabeledPoint],
- oldStrategy: OldStrategy): DecisionTreeRegressionModel = {
+ oldStrategy: OldStrategy, featureSubsetStrategy: String):
DecisionTreeRegressionModel = {
--- End diff --
follow Spark style here
```scala
private[ml] def train(
data: RDD[LabeledPoint],
oldStrategy: OldStrategy,
featureSubsetStrategy: String): DecisionTreeRegressionModel = {
```
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