dongjoon-hyun commented on a change in pull request #24601: [SPARK-27702][K8S] 
Allow using some alternatives for service accounts
URL: https://github.com/apache/spark/pull/24601#discussion_r370505542
 
 

 ##########
 File path: 
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/KubernetesClusterManager.scala
 ##########
 @@ -50,10 +50,14 @@ private[spark] class KubernetesClusterManager extends 
ExternalClusterManager wit
       require(sc.conf.get(KUBERNETES_DRIVER_POD_NAME).isDefined,
         "If the application is deployed using spark-submit in cluster mode, 
the driver pod name " +
           "must be provided.")
+      val serviceAccountToken =
+        Some(new 
File(Config.KUBERNETES_SERVICE_ACCOUNT_TOKEN_PATH)).filter(_.exists)
+      val serviceAccountCaCrt =
+        Some(new 
File(Config.KUBERNETES_SERVICE_ACCOUNT_CA_CRT_PATH)).filter(_.exists)
 
 Review comment:
   The existing code already try to use the given file first.

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