Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/19272#discussion_r150049113
--- Diff:
core/src/main/scala/org/apache/spark/executor/CoarseGrainedExecutorBackend.scala
---
@@ -123,6 +123,9 @@ private[spark] class CoarseGrainedExecutorBackend(
executor.stop()
}
}.start()
+
+ case UpdateDelegationTokens(tokenBytes) =>
+ SparkHadoopUtil.get.addDelegationTokens(tokenBytes, env.conf)
--- End diff --
Can you add a `logInfo` saying the tokens are being updated? This has
always been helpful when debugging issues with this feature on YARN.
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