Github user liyezhang556520 commented on a diff in the pull request: https://github.com/apache/spark/pull/3824#discussion_r22633623 --- Diff: core/src/main/scala/org/apache/spark/deploy/master/Master.scala --- @@ -758,13 +760,14 @@ private[spark] class Master( // Event logging is enabled for this application, but no event logs are found val title = s"Application history not found (${app.id})" var msg = s"No event logs found for application $appName in $eventLogFile." - logWarning(msg) + val exception = URLEncoder.encode(Utils.exceptionString(fnf), "UTF-8") + logWarning(msg, fnf) msg += " Did you specify the correct logging directory?" msg = URLEncoder.encode(msg, "UTF-8") - app.desc.appUiUrl = notFoundBasePath + s"?msg=$msg&title=$title" + app.desc.appUiUrl = notFoundBasePath + s"?msg=$msg&exception=$exception&title=$title" --- End diff -- ok, I'll revert the change, thanks @andrewor14 , @JoshRosen , @srowen
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