Saisai Shao created SPARK-5315:
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             Summary: reduceByWindow returns Scala DStream not JavaDStream
                 Key: SPARK-5315
                 URL: https://issues.apache.org/jira/browse/SPARK-5315
             Project: Spark
          Issue Type: Bug
          Components: Streaming
    Affects Versions: 1.2.0
            Reporter: Saisai Shao


{code}

  def reduceByWindow(
      reduceFunc: (T, T) => T,
      windowDuration: Duration,
      slideDuration: Duration
    ): DStream[T] = {
    dstream.reduceByWindow(reduceFunc, windowDuration, slideDuration)
  }
{code}

It should return JavaDStream not DStream for java code.



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