Github user d2r commented on a diff in the pull request:
https://github.com/apache/spark/pull/9051#discussion_r44837993
--- Diff: core/src/main/scala/org/apache/spark/ui/jobs/StageTable.scala ---
@@ -145,9 +145,20 @@ private[ui] class StageTableBase(
case None => "Unknown"
}
val finishTime = s.completionTime.getOrElse(System.currentTimeMillis)
- val duration = s.submissionTime.map { t =>
- if (finishTime > t) finishTime - t else System.currentTimeMillis - t
- }
+ val taskLaunchTimes = stageData.taskData.values
+ .filter(_.taskInfo.launchTime != 0)
+ .map(_.taskInfo.launchTime)
--- End diff --
That is much clearer, thanks. And I'll add a comment.
I was guarding against an empty list of launch times, which could throw an
exception if `min` were called on it. Do I need to worry about that here?
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