Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/19208#discussion_r150373516
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala ---
@@ -117,6 +123,12 @@ class CrossValidator @Since("1.2.0") (@Since("1.4.0")
override val uid: String)
instr.logParams(numFolds, seed, parallelism)
logTuningParams(instr)
+ val collectSubModelsParam = $(collectSubModels)
+
+ var subModels: Option[Array[Array[Model[_]]]] = if
(collectSubModelsParam) {
--- End diff --
Sorry I didn't follow up on this before. I think that @WeichenXu123 's
argument is valid, but please say if there are issues I'm missing @holdenk
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