Github user sjbrunst commented on the pull request: https://github.com/apache/spark/pull/1717#issuecomment-59079944 @surendramarupudi A DStream is a series of RDDs, so you can't cast a DStream to an RDD. Try using the ``DStream.foreachRDD(func)`` to apply ``func`` to each RDD in the stream (see http://spark.apache.org/docs/latest/streaming-programming-guide.html#output-operations-on-dstreams). You should be able to output to MongoDB that way. Also, that question is not directly related to this pull request, so I think questions like that are best directed at the Spark User mailing list (http://apache-spark-user-list.1001560.n3.nabble.com/).
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