Github user MLnick commented on a diff in the pull request: https://github.com/apache/spark/pull/17972#discussion_r118479964 --- Diff: mllib/src/test/scala/org/apache/spark/ml/classification/DecisionTreeClassifierSuite.scala --- @@ -398,6 +398,14 @@ class DecisionTreeClassifierSuite testDefaultReadWrite(model) } + + test("intermediate dataset storage level") { --- End diff -- Ideally we need to test that the actual storage levels for the intermediate RDDs are correct. I did this for ALS - not sure if the same approach might be used here.
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