[jira] [Updated] (SPARK-18855) Add RDD flatten function

["Linbo (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-18855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Linbo updated SPARK-18855:
--------------------------
    Target Version/s:   (was: 2.1.0)

> Add RDD flatten function
> ------------------------
>
>                 Key: SPARK-18855
>                 URL: https://issues.apache.org/jira/browse/SPARK-18855
>             Project: Spark
>          Issue Type: New Feature
>          Components: Spark Core
>            Reporter: Linbo
>              Labels: flatten, rdd
>
> A new RDD flatten function is similar to flatten function of scala collections:
> {code:title=spark-shell|borderStyle=solid}
> scala> val rdd = sc.makeRDD(List(List(1, 2, 3), List(4, 5), List(6)))
> rdd: org.apache.spark.rdd.RDD[List[Int]] = ParallelCollectionRDD[0] at makeRDD at <console>:24
> scala> rdd.flatten.collect
> res0: Array[Int] = Array(1, 2, 3, 4, 5, 6)
> {code}



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