Github user mridulm commented on a diff in the pull request: https://github.com/apache/spark/pull/16576#discussion_r96114324 --- Diff: core/src/main/scala/org/apache/spark/rdd/RDD.scala --- @@ -1539,6 +1539,13 @@ abstract class RDD[T: ClassTag]( // NOTE: we use a global lock here due to complexities downstream with ensuring // children RDD partitions point to the correct parent partitions. In the future // we should revisit this consideration. + if (doCheckpointCalled) { + throw new SparkException("Because job has been executed on this RDD, checkpoint won't work") + } + if (storageLevel == StorageLevel.NONE) { + logWarning("Call checkpoint on unpersisted RDD, it will cause RDD recomputation" + + " when saving checkpoint files.") + } --- End diff -- Moving to doCheckpoint (before `checkpointData.get.checkpoint()`) and making it a logInfo sounds fine.
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org