Github user jerryshao commented on a diff in the pull request: https://github.com/apache/spark/pull/4104#discussion_r23277933 --- Diff: project/MimaExcludes.scala --- @@ -82,6 +82,10 @@ object MimaExcludes { // SPARK-5166 Spark SQL API stabilization ProblemFilters.exclude[IncompatibleMethTypeProblem]("org.apache.spark.ml.Transformer.transform"), ProblemFilters.exclude[IncompatibleMethTypeProblem]("org.apache.spark.ml.Estimator.fit") + ) ++ Seq( + // SPARK-5315 Spark Streaming Java API returns Scala DStream + ProblemFilters.exclude[MissingMethodProblem]( + "org.apache.spark.streaming.api.java.JavaDStreamLike.reduceByWindow") --- End diff -- Hi all, I tested with a clean build, still Mima complains about it, seems it is false positive. ``` [error] * method reduceByWindow(org.apache.spark.api.java.function.Function2,org.apache.spark.streaming.Duration,org.apache.spark.streaming.Duration)org.apache.spark.streaming.api.java.JavaDStream in trait org.apache.spark.streaming.api.java.JavaDStreamLike does not have a correspondent in old version [error] filter with: ProblemFilters.exclude[MissingMethodProblem]("org.apache.spark.streaming.api.java.JavaDStreamLike.reduceByWindow") ```
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