Github user markhamstra commented on a diff in the pull request:
https://github.com/apache/spark/pull/126#discussion_r10590414
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala ---
@@ -1025,6 +1025,14 @@ abstract class RDD[T: ClassTag](
checkpointData.flatMap(_.getCheckpointFile)
}
+ def cleanup() {
--- End diff --
This seems like an easy thing to misuse regardless of who is doing the
calling. I mean, in addition to making rddA invalid, ...
```scala
val rddA = rdd1.join(rdd2)
val rddB = rdd3.join(rdd2)
rddA.cleanup()
```
...is going to do bad things to rddB, right? Something that forces
responsibility for manually tracking dependencies isn't something we should be
making easily accessible.
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