Github user ArtRand commented on a diff in the pull request:
https://github.com/apache/spark/pull/19272#discussion_r149564294
--- Diff:
resource-managers/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosCoarseGrainedSchedulerBackend.scala
---
@@ -213,6 +216,14 @@ private[spark] class
MesosCoarseGrainedSchedulerBackend(
sc.conf.getOption("spark.mesos.driver.frameworkId").map(_ + suffix)
)
+ // check that the credentials are defined, even though it's likely
that auth would have failed
+ // already if you've made it this far, then start the token renewer
+ if (hadoopDelegationTokens.isDefined) {
--- End diff --
I may have spoke too soon, there might be a way..
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