Github user gengliangwang commented on a diff in the pull request:
https://github.com/apache/spark/pull/21809#discussion_r205752305
--- Diff: core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala ---
@@ -105,16 +105,29 @@ private[ui] class StagePage(parent: StagesTab, store:
AppStatusStore) extends We
val stageAttemptId = parameterAttempt.toInt
val stageHeader = s"Details for Stage $stageId (Attempt
$stageAttemptId)"
- val stageDataWrapper = parent.store.stageAttempt(stageId,
stageAttemptId, details = false)
- val stageData = parent.store
- .asOption(stageDataWrapper.info)
- .getOrElse {
+ var stageDataWrapper: StageDataWrapper = null
+ try {
+ stageDataWrapper = parent.store.stageAttempt(stageId,
stageAttemptId, details = false)
+ } catch {
+ case e: NoSuchElementException => e.getMessage
+ }
+ var stageData: StageData = null
+ if (stageDataWrapper != null) {
+ stageData = parent.store
+ .asOption(stageDataWrapper.info)
+ .get
+ } else {
+ stageData = {
--- End diff --
this code branch is unreachable.
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