Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/2480#discussion_r17845815
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala ---
@@ -1270,13 +1270,12 @@ abstract class RDD[T: ClassTag](
* doCheckpoint() is called recursively on the parent RDDs.
*/
private[spark] def doCheckpoint() {
- if (!doCheckpointCalled) {
- doCheckpointCalled = true
- if (checkpointData.isDefined) {
- checkpointData.get.doCheckpoint()
- } else {
- dependencies.foreach(_.rdd.doCheckpoint())
- }
+ if (checkpointData == None && doCheckpointCalled == 0) {
--- End diff --
There is no explanation of what this change is trying to accomplish. What
do you believe this fixes? I would not use "1" and "2" to represent some kind
of state without explanation.
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