Github user WeichenXu123 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20964#discussion_r178778285
--- Diff:
mllib/src/test/scala/org/apache/spark/ml/feature/ImputerSuite.scala ---
@@ -76,6 +75,28 @@ class ImputerSuite extends SparkFunSuite with
MLlibTestSparkContext with Default
ImputerSuite.iterateStrategyTest(imputer, df)
}
+ test("Imputer should work with Structured Streaming") {
+ val localSpark = spark
+ import localSpark.implicits._
+ val df = Seq[(java.lang.Double, Double)](
+ (4.0, 4.0),
+ (10.0, 10.0),
+ (10.0, 10.0),
+ (Double.NaN, 8.0),
+ (null, 8.0)
+ ).toDF("value", "expected_mean_value")
--- End diff --
Why the "value" column use `java.lang.Double` type ?
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