akpatnam25 commented on code in PR #36601:
URL: https://github.com/apache/spark/pull/36601#discussion_r878407651
##########
core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala:
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@@ -1885,6 +1885,14 @@ private[spark] class DAGScheduler(
mapOutputTracker.
unregisterMergeResult(shuffleId, reduceId, bmAddress,
Option(mapIndex))
}
+ } else {
+ // Unregister the merge result of <shuffleId, reduceId> if
+ // there is a FetchFailed event and is not a
+ // MetaDataFetchException which is signified by bmAddress being
null
+ if (bmAddress != null) {
+ mapOutputTracker.
+ unregisterMergeResult(shuffleId, reduceId, bmAddress, None)
+ }
Review Comment:
yep, added a condition to check for the special shuffle-push-merger
executor, where we only remove the outputs and not the executor itself.
added a corresponding UT too.
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