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Sean Owen commented on SPARK-2331: ---------------------------------- Yes your analysis is right-er, I think. I imagine this won't be changed as it introduces an API change, but yes I think the return type should have been {{RDD[T]}} As a workaround you can do... {code} val empty: RDD[String] = sc.emptyRDD val rdds = Seq("a","b","c").foldLeft(empty){ (rdd,path) => rdd.union(sc.textFile(path)) } {code} Anyone else? WontFix, at least for 1.x? > SparkContext.emptyRDD has wrong return type > ------------------------------------------- > > Key: SPARK-2331 > URL: https://issues.apache.org/jira/browse/SPARK-2331 > Project: Spark > Issue Type: Bug > Affects Versions: 1.0.0 > Reporter: Ian Hummel > > The return type for SparkContext.emptyRDD is EmptyRDD[T]. > It should be RDD[T]. That means you have to add extra type annotations on > code like the below (which creates a union of RDDs over some subset of paths > in a folder) > val rdds = Seq("a", "b", "c").foldLeft[RDD[String]](sc.emptyRDD[String]) { > (rdd, path) ⇒ > rdd.union(sc.textFile(path)) > } -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org