Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/10934#discussion_r50929833
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala ---
@@ -1578,6 +1582,11 @@ abstract class RDD[T: ClassTag](
if (!doCheckpointCalled) {
doCheckpointCalled = true
if (checkpointData.isDefined) {
+ if (recursiveCheckpoint) {
--- End diff --
I wonder whether whether we can collect all the RDDs that needs to be
checkpointed, and then checkpoint them in parallel.
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