Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/1841#discussion_r15979883
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala ---
@@ -1233,6 +1233,11 @@ abstract class RDD[T: ClassTag](
dependencies.head.rdd.asInstanceOf[RDD[U]]
}
+ /** Returns the jth parent RDD: e.g. rdd.parent[T](0) is equivalent to
rdd.firstParent[T] */
--- End diff --
not that big of a deal - how come you didn't use "i"?
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