Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/7021#discussion_r33995655
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDDCheckpointData.scala
---
@@ -114,7 +145,7 @@ private[spark] class RDDCheckpointData[T:
ClassTag](@transient rdd: RDD[T])
rdd.markCheckpointed(newRDD) // Update the RDD's dependencies and
partitions
cpState = Checkpointed
--- End diff --
The state transition here is incorrect. At this point the RDD has not been
checkpointed yet. It's not safe to truncate the RDD's lineage until we drain
the iterator.
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