Github user vanzin commented on a diff in the pull request: https://github.com/apache/spark/pull/19272#discussion_r148341472 --- Diff: core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala --- @@ -102,8 +99,15 @@ class CoarseGrainedSchedulerBackend(scheduler: TaskSchedulerImpl, val rpcEnv: Rp // hadoop token manager used by some sub-classes (e.g. Mesos) def hadoopDelegationTokenManager: Option[HadoopDelegationTokenManager] = None - // Hadoop delegation tokens to be sent to the executors. - val hadoopDelegationCreds: Option[Array[Byte]] = getHadoopDelegationCreds() + def hadoopCredentialRenewer: Option[HadoopCredentialRenewer] = None --- End diff -- Why is this needed here? This class doesn't use it at all.
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