Github user harishreedharan commented on a diff in the pull request:
https://github.com/apache/spark/pull/4688#discussion_r28285855
--- Diff:
core/src/main/scala/org/apache/spark/executor/CoarseGrainedExecutorBackend.scala
---
@@ -164,6 +174,9 @@ private[spark] object CoarseGrainedExecutorBackend
extends Logging {
driverConf.set(key, value)
}
}
+ // Periodically update the credentials for this user to ensure HDFS
tokens get updated.
+ val tokenUpdater = new ExecutorDelegationTokenUpdater(driverConf,
SparkHadoopUtil.get.conf)
+ tokenUpdater.updateCredentialsIfRequired()
--- End diff --
It won't cause it to go check immediately. This call basically starts the
updater, which will check for the tokens periodically (at 80% of expiry). I can
rename this to `start` if it makes the intent clearer.
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