yabola commented on code in PR #49270:
URL: https://github.com/apache/spark/pull/49270#discussion_r1898419220
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core/src/test/scala/org/apache/spark/scheduler/DAGSchedulerSuite.scala:
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@@ -2248,7 +2250,7 @@ class DAGSchedulerSuite extends SparkFunSuite with
TempLocalSparkContext with Ti
// original result task 1.0 succeed
runEvent(makeCompletionEvent(taskSets(1).tasks(1), Success, 42))
sc.listenerBus.waitUntilEmpty()
- assert(completedStage === List(0, 1, 1, 0))
+ assert(completedStage === List(0, 1, 1, 0, 1))
Review Comment:
Let me explain the timeline of the last event in this UT:
1. map stage is running, result stage is waiting (result task 1.0 is
running)
2. UT result task 1.0 success(no running tasks in result stage any more)
3. in `handleTaskCompletion` , the result stage `markStageAsFinished` and
clean result stage's `failedAttemptIds`
4. `cancelRunningIndependentStages` cancel map stage (it is in running
stage) . Result stage is waiting , but don't have `failedAttemptIds` , so it
won't be killed (and also no running tasks in result stage)
In this UT, it is really no need to kill the last result stage.
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