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https://issues.apache.org/jira/browse/SPARK-2331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Or resolved SPARK-2331.
------------------------------
       Resolution: Fixed
    Fix Version/s: 2.0.0

> SparkContext.emptyRDD should return RDD[T] not EmptyRDD[T]
> ----------------------------------------------------------
>
>                 Key: SPARK-2331
>                 URL: https://issues.apache.org/jira/browse/SPARK-2331
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Spark Core
>    Affects Versions: 1.0.0
>            Reporter: Ian Hummel
>            Assignee: Reynold Xin
>            Priority: Minor
>             Fix For: 2.0.0
>
>
> 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)
> {code}
> val rdds = Seq("a", "b", "c").foldLeft[RDD[String]](sc.emptyRDD[String]) { 
> (rdd, path) ⇒
>           rdd.union(sc.textFile(path))
>         }
> {code}



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