Github user susanxhuynh commented on a diff in the pull request:
https://github.com/apache/spark/pull/19272#discussion_r140117055
--- Diff:
resource-managers/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosCoarseGrainedSchedulerBackend.scala
---
@@ -198,16 +198,19 @@ private[spark] class
MesosCoarseGrainedSchedulerBackend(
sc.conf.getOption("spark.mesos.driver.frameworkId").map(_ + suffix)
)
- if (principal != null) {
+ // check that the credentials are defined, even though it's likely
that auth would have failed
+ // already if you've made it this far
+ if (principal != null && hadoopDelegationCreds.isDefined) {
logDebug(s"Principal found ($principal) starting token renewer")
val credentialRenewerThread = new Thread {
setName("MesosCredentialRenewer")
override def run(): Unit = {
+ val dummy: Option[Array[Byte]] = None
--- End diff --
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