Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/10958#discussion_r52232425
--- Diff: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
---
@@ -1144,13 +1144,12 @@ class DAGScheduler(
null
}
- // The success case is dealt with separately below.
- // TODO: Why post it only for failed tasks in cancelled stages?
Clarify semantics here.
- if (event.reason != Success) {
- val attemptId = task.stageAttemptId
- listenerBus.post(SparkListenerTaskEnd(
- stageId, attemptId, taskType, event.reason, event.taskInfo,
taskMetrics))
- }
+ // Note: this stage may already have been canceled, in which case this
task end event
+ // maybe posted after the stage completed event. There's not much we
can do here without
+ // introducing additional complexity in the scheduler to wait for all
the task end events
+ // before posting the stage completed event.
+ listenerBus.post(SparkListenerTaskEnd(
+ stageId, task.stageAttemptId, taskType, event.reason,
event.taskInfo, taskMetrics))
--- End diff --
ok, I separated it
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