Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/19278#discussion_r140374060
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala ---
@@ -303,16 +302,17 @@ object CrossValidatorModel extends
MLReadable[CrossValidatorModel] {
val (metadata, estimator, evaluator, estimatorParamMaps) =
ValidatorParams.loadImpl(path, sc, className)
val numFolds = (metadata.params \ "numFolds").extract[Int]
--- End diff --
numFolds is no longer needed
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