Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/7014#discussion_r35478432
--- Diff: core/src/main/scala/org/apache/spark/TaskEndReason.scala ---
@@ -97,13 +103,27 @@ case class ExceptionFailure(
description: String,
stackTrace: Array[StackTraceElement],
fullStackTrace: String,
- metrics: Option[TaskMetrics])
+ metrics: Option[TaskMetrics],
+ exceptionWrapper: Option[ThrowableSerializationWrapper])
extends TaskFailedReason {
+ /**
+ * `preserveCause` is used to keep the exception itself so it is
available to the
+ * driver. This may be set to `false` in the event that the exception is
not in fact
+ * serializable.
+ */
+ private[spark] def this(e: Throwable, metrics: Option[TaskMetrics],
preserveCause: Boolean) {
+ this(e.getClass.getName, e.getMessage, e.getStackTrace,
Utils.exceptionString(e), metrics,
+ if (preserveCause) Some(new ThrowableSerializationWrapper(e)) else
None)
+ }
+
private[spark] def this(e: Throwable, metrics: Option[TaskMetrics]) {
- this(e.getClass.getName, e.getMessage, e.getStackTrace,
Utils.exceptionString(e), metrics)
+ this(e, metrics, preserveCause = true)
}
+ def exception = exceptionWrapper.flatMap(
+ (w : ThrowableSerializationWrapper) => Option(w.exception))
--- End diff --
nit: needs a return type, and if multiline wrap in braces. Though you
could also do `exceptionWrapper.flatMap(Option(_.exception))` which might
eliminate the need for multiple lines
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