Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/9072#discussion_r41734082
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala ---
@@ -1521,8 +1521,15 @@ abstract class RDD[T: ClassTag](
}
checkpointData match {
- case Some(reliable: ReliableRDDCheckpointData[_]) => logWarning(
- "RDD was already marked for reliable checkpointing: overriding
with local checkpoint.")
+ case Some(reliable: ReliableRDDCheckpointData[_]) =>
--- End diff --
I suspect this is a good restriction, but cc @tdas regarding the semantics.
I feel like this code construct is getting hard to read. I don't feel
strongly, but is `if (checkpointData.isDefined && isCheckpointed)` not simpler?
then there are just two branches, one return point.
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