Github user sethah commented on a diff in the pull request:
https://github.com/apache/spark/pull/20632#discussion_r170410851
--- Diff:
mllib/src/test/scala/org/apache/spark/ml/tree/impl/RandomForestSuite.scala ---
@@ -18,17 +18,20 @@
package org.apache.spark.ml.tree.impl
import scala.collection.mutable
+import scala.util.Random
-import org.apache.spark.SparkFunSuite
+import org.apache.spark.{SparkContext, SparkFunSuite}
import org.apache.spark.ml.classification.DecisionTreeClassificationModel
import org.apache.spark.ml.feature.LabeledPoint
import org.apache.spark.ml.linalg.{Vector, Vectors}
import org.apache.spark.ml.tree._
import org.apache.spark.ml.util.TestingUtils._
import org.apache.spark.mllib.tree.{DecisionTreeSuite => OldDTSuite,
EnsembleTestHelper}
import org.apache.spark.mllib.tree.configuration.{Algo => OldAlgo,
QuantileStrategy, Strategy => OldStrategy}
+import org.apache.spark.mllib.tree.configuration.FeatureType._
--- End diff --
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