Github user huaxingao commented on a diff in the pull request:
https://github.com/apache/spark/pull/19715#discussion_r150450280
--- Diff:
mllib/src/test/scala/org/apache/spark/ml/feature/QuantileDiscretizerSuite.scala
---
@@ -146,4 +146,172 @@ class QuantileDiscretizerSuite
val model = discretizer.fit(df)
assert(model.hasParent)
}
+
+ test("Multiple Columns: Test observed number of buckets and their sizes
match expected values") {
+ val spark = this.spark
+ import spark.implicits._
+
+ val datasetSize = 100000
+ val numBuckets = 5
+ val data1 = Array.range(1, 100001, 1).map(_.toDouble)
+ val data2 = Array.range(1, 200000, 2).map(_.toDouble)
+ val data = (0 until 100000).map { idx =>
+ (data1(idx), data2(idx))
+ }
--- End diff --
Yes. Will change to data1.zip(data2)
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