Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/22112#discussion_r210449640
--- Diff: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
---
@@ -1441,6 +1441,18 @@ class DAGScheduler(
failedStages += failedStage
failedStages += mapStage
if (noResubmitEnqueued) {
+ if (!mapStage.rdd.isIdempotent) {
+ // The map stage is not idempotent, we have to rerun all
the tasks for the
+ // failed stage to get expected result.
+ failedStage match {
+ case s: ShuffleMapStage =>
--- End diff --
Like we discussed, we shall also retry the partially finished succeeding
stages.
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