Github user aarondav commented on a diff in the pull request:
https://github.com/apache/spark/pull/1329#discussion_r14664065
--- Diff: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
---
@@ -768,6 +768,10 @@ class DAGScheduler(
abortStage(stage, "Task not serializable: " + e.toString)
runningStages -= stage
return
+ case e: Throwable => // Other exceptions, such as
IllegalArgumentException from Kryo.
+ abortStage(stage, "Task serialization failed: " + e.toString)
--- End diff --
In the prior case, of NotSerializableException, the error message was
likely sufficient. However, since we're dealing with arbitrary exceptions here,
the user may need to actually see the full stack trace to understand what's
going on. Maybe something like:
```scala
abortStage(stage, s"Task serialization failed:
$e\n${e.getStackTraceString}")
```
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