Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/4688#discussion_r27221547
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala
---
@@ -234,9 +236,14 @@ class CoarseGrainedSchedulerBackend(scheduler:
TaskSchedulerImpl, val actorSyste
properties += ((key, value))
}
}
+
// TODO (prashant) send conf instead of properties
driverActor = actorSystem.actorOf(
Props(new DriverActor(properties)), name =
CoarseGrainedSchedulerBackend.ACTOR_NAME)
+
+ // If a principal and keytab have been set, use that to create new
credentials for executors
+ // periodically
+ SparkHadoopUtil.get.scheduleLoginFromKeytab()
--- End diff --
hmm after looking a bit more, I guess updateCredentialsIfRequired() is
called from the runAsUser which is common so I guess this location makes sense
to match that. I do still think the YarnSparkHadoopUtil has got a lot of stuff
in it though.
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