Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/4104#discussion_r23211173
--- 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 --
Hm, it doesn't make sense that Mima would complain since no methods have
been removed. Can you double-check by trying a clean build without the
exclusion? or else I am worried we're overlooking some obscure reason that this
change still change the API, but I can't figure out why that could be. It could
be a false positive in Mima.
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