tgravescs commented on a change in pull request #28053: [SPARK-29153][CORE]Add
ability to merge resource profiles within a stage with Stage Level Scheduling
URL: https://github.com/apache/spark/pull/28053#discussion_r401856524
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File path: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
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@@ -447,10 +449,27 @@ private[spark] class DAGScheduler(
stageResourceProfiles: HashSet[ResourceProfile]): ResourceProfile = {
logDebug(s"Merging stage rdd profiles: $stageResourceProfiles")
val resourceProfile = if (stageResourceProfiles.size > 1) {
- // add option later to actually merge profiles - SPARK-29153
- throw new IllegalArgumentException("Multiple ResourceProfile's specified
in the RDDs for " +
- "this stage, please resolve the conflicting ResourceProfile's as Spark
doesn't" +
- "currently support merging them.")
+ if (shouldMergeResourceProfiles) {
+ val startResourceProfile = stageResourceProfiles.head
+ val mergedProfile = stageResourceProfiles.drop(1)
+ .foldLeft(startResourceProfile)((a, b) => mergeResourceProfiles(a,
b))
+ // compared merged profile with existing ones so we we don't add it
over and over again
+ // if the user runs the same operation multiple times
+ val resProfile =
sc.resourceProfileManager.getEquivalentProfile(mergedProfile)
+ resProfile match {
+ case Some(existingRp) => existingRp
+ case None =>
+ // this ResourceProfile could be different if it was merged so we
have to add it to
+ // our ResourceProfileManager
+ sc.resourceProfileManager.addResourceProfile(mergedProfile)
+ mergedProfile
+ }
+ } else {
+ throw new IllegalArgumentException("Multiple ResourceProfiles
specified in the RDDs for " +
+ "this stage, either resolve the conflicting ResourceProfile's
yourself or enable " +
Review comment:
If you have suggestions for this exception that would make it more clear let
me know
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