Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/9483#discussion_r45269601
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala ---
@@ -211,7 +211,7 @@ abstract class RDD[T: ClassTag](
// Our dependencies and partitions will be gotten by calling subclass's
methods below, and will
// be overwritten when we're checkpointed
private var dependencies_ : Seq[Dependency[_]] = null
- @transient private var partitions_ : Array[Partition] = null
+ @transient @volatile private var partitions_ : Array[Partition] = null
--- End diff --
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