mridulm commented on a change in pull request #34735:
URL: https://github.com/apache/spark/pull/34735#discussion_r766031321
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File path: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
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@@ -718,6 +718,12 @@ private[spark] class DAGScheduler(
// read from merged output as the MergeStatuses are not
available.
if (!mapStage.isAvailable ||
!mapStage.shuffleDep.shuffleMergeFinalized) {
missing += mapStage
+ } else if (mapStage.nextAttemptId == 0) {
+ // Forward the nextAttemptId if skipped and get visited for
the first time.
+ // Otherwise, once it gets retried,
+ // 1) the stuffs in stage info become distorting, e.g. task
num, input byte, e.t.c
+ // 2) the first attempt starts from 0-idx, it will not be
marked as a retry
+ mapStage.nextAttemptId += 1
Review comment:
+1 on explicitly making intent to skip clear, instead of only bumping
the attempt id.
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