Github user dusenberrymw commented on a diff in the pull request:
https://github.com/apache/spark/pull/8112#discussion_r40274887
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/tuning/TrainValidationSplit.scala ---
@@ -79,8 +95,22 @@ class TrainValidationSplit(override val uid: String)
extends Estimator[TrainVali
val numModels = epm.length
val metrics = new Array[Double](epm.length)
- val Array(training, validation) =
+ val Array(training, validation) = if
(schema.fieldNames.contains($(stratifiedCol))) {
--- End diff --
Same as above with regards to checking the stratified column.
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