Github user nkronenfeld commented on a diff in the pull request:
https://github.com/apache/spark/pull/1535#discussion_r15308845
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala ---
@@ -1269,6 +1269,19 @@ abstract class RDD[T: ClassTag](
/** A description of this RDD and its recursive dependencies for
debugging. */
def toDebugString: String = {
+ // Get a debug description of an rdd without its children
+ def debugSelf (rdd: RDD[_]): Seq[String] = {
+ import Utils.bytesToString
+
+ val persistence = storageLevel.description
+ val storageInfo = rdd.context.getRDDStorageInfo.filter(_.id ==
rdd.id).map(info =>
--- End diff --
I'm not sure what you mean - do you mean "an extremely costly operation"?
Assuming that to be the case, two comments::
* I though about attaching flags to the function so one could specify the
type of debug information desired; I think that makes the function too complex,
but I'm hardly firm in that idea.
* This whole function is specifically to help a developer with debugging.
I don't _think_ having it be costly is all that bad.
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