Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/3073#discussion_r19852247
--- Diff: core/src/main/scala/org/apache/spark/util/JsonProtocol.scala ---
@@ -636,9 +635,14 @@ private[spark] object JsonProtocol {
case `exceptionFailure` =>
val className = (json \ "Class Name").extract[String]
val description = (json \ "Description").extract[String]
- val stackTrace = stackTraceFromJson(json \ "Stack Trace")
+ val stackTrace = Utils.jsonOption(json \ "Full Stack
Trace").map(_.extract[String]).
+ getOrElse {
+ // backward compatibility
+ val oldStackTrace = stackTraceFromJson(json \ "Stack Trace")
+ Utils.exceptionString(className, description, oldStackTrace)
+ }
--- End diff --
These codes are used to parse the old JSON event logs.
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