thejdeep commented on a change in pull request #34607:
URL: https://github.com/apache/spark/pull/34607#discussion_r761426864



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File path: core/src/main/scala/org/apache/spark/status/AppStatusListener.scala
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@@ -600,6 +600,17 @@ private[spark] class AppStatusListener(
     liveUpdate(task, now)
 
     Option(liveStages.get((event.stageId, event.stageAttemptId))).foreach { 
stage =>
+      if (event.taskInfo.speculative) {
+        stage.speculationStageSummary = Some(stage.speculationStageSummary
+          .getOrElse(new LiveSpeculationStageSummary(event.stageId, 
event.stageAttemptId)))
+        val speculationSummary = stage.speculationStageSummary.get
+        speculationSummary.numActiveTasks += 1
+        speculationSummary.numTasks += 1
+      }
+      if(stage.speculationStageSummary.isDefined) {
+        maybeUpdate(stage.speculationStageSummary.get, now)

Review comment:
       How about we make a deterministic update if the taskInfo is speculative 
and then we avoid `maybeUpdate` altogether ? 




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