Github user SaintBacchus commented on a diff in the pull request:
https://github.com/apache/spark/pull/5663#discussion_r29018738
--- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala ---
@@ -657,6 +657,9 @@ private[spark] class Client(
case e: ApplicationNotFoundException =>
logError(s"Application $appId not found.")
return (YarnApplicationState.KILLED,
FinalApplicationStatus.KILLED)
+ case ie: IOException =>
+ logError(s"Application $appId occurred an unexpected
IOException.")
+ return (YarnApplicationState.KILLED,
FinalApplicationStatus.KILLED)
--- End diff --
@vanzin The process hang due to the endless `renewLease` logic in
`DFSClient`, so I think an IOException is just fine for this problem. Other
exception may cause the 'monitor' thread down but can not hang the process.
And it seems that if the exception handler is under `run` method, it can't
go through the `sc.stop()` logic. If that, the driver process had to wait the
network to be reachable then exit.
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