Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/3824#discussion_r22323425
--- 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 --
@srowen It looks like this same `exception` URL param is used in other
exception-handling code in this same file (the first instance was added by
@andrewor14 in 6afca2d1079bac6309a595b8e0ffc74ae93fa662).
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