Github user WeichenXu123 commented on a diff in the pull request:
https://github.com/apache/spark/pull/16576#discussion_r96112271
--- 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 --
en... your advice is reasonable!
to sovle (a), I can move this warning into `doCheckpoint`, avoid the
situation `RDD.persist` called later.
about problem (b), how about change this warning into `logInfo` ?
---
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 [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
