Github user maropu commented on the pull request: https://github.com/apache/spark/pull/4614#issuecomment-74420544 Understood. I was thinking that not dummy arguments but the duplicated 'Conf' class in SVDPlusPlus are used so as to solve the issue; /** Obsolete: Configuration parameters for SVDPlusPlus. */ class Conf( var rank: Int, .... var gamma7: Double) extends Serializable /**Configuration parameters for SVDPlusPlus. */ class SVDPlusPlusConf( var rank: Int, .... var gamma7: Double) extends Serializable --- new def run(edges: RDD[Edge[Double]], conf: SVDPlusPlusConf) --- obsolete def run(edges: RDD[Edge[Double]], conf: Conf) Thought?
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