Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/19741#discussion_r151538353
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnSchedulerBackend.scala
---
@@ -268,8 +268,13 @@ private[spark] abstract class YarnSchedulerBackend(
logWarning(reason.toString)
driverEndpoint.ask[Boolean](r).onFailure {
--- End diff --
Yeah, as you said, there's only logging going on. There's only two things
that can happen:
- the handler throws an exception instead of replying
- the RPC layer hits an error
The first can be logged at the handler (it not already logged by the RPC
layer). The second is already logged by the RPC layer.
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