diff options
Diffstat (limited to 'mllib/src/test')
| -rw-r--r-- | mllib/src/test/scala/org/apache/spark/mllib/regression/IsotonicRegressionSuite.scala | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/regression/IsotonicRegressionSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/regression/IsotonicRegressionSuite.scala index ea4f286575..94da626d92 100644 --- a/mllib/src/test/scala/org/apache/spark/mllib/regression/IsotonicRegressionSuite.scala +++ b/mllib/src/test/scala/org/apache/spark/mllib/regression/IsotonicRegressionSuite.scala @@ -176,6 +176,17 @@ class IsotonicRegressionSuite extends SparkFunSuite with MLlibTestSparkContext w assert(model.predictions === Array(1, 2, 2)) } + test("SPARK-16426 isotonic regression with duplicate features that produce NaNs") { + val trainRDD = sc.parallelize(Seq[(Double, Double, Double)]((2, 1, 1), (1, 1, 1), (0, 2, 1), + (1, 2, 1), (0.5, 3, 1), (0, 3, 1)), + 2) + + val model = new IsotonicRegression().run(trainRDD) + + assert(model.boundaries === Array(1.0, 3.0)) + assert(model.predictions === Array(0.75, 0.75)) + } + test("isotonic regression prediction") { val model = runIsotonicRegression(Seq(1, 2, 7, 1, 2), true) |