Github user skonto commented on the issue: https://github.com/apache/spark/pull/20945 @susanxhuynh @vanzin It seems to me that if SPARK-20982 is fixed then from what I see all secret stores I searched provide an http API: https://github.com/kubernetes/kubernetes/blob/09f321c80bfc9bca63a5530b56d7a1a3ba80ba9b/pkg/kubectl/cmd/util/factory_client_access.go#L473 https://www.vaultproject.io/api/index.html https://docs.openshift.org/latest/rest_api/api/v1.Secret.html https://v1-9.docs.kubernetes.io/docs/reference/generated/kubernetes-api/v1.9/#secret-v1-core https://docs.mesosphere.com/1.8/administration/secrets/secrets-api/ So generating DTs at the first spark submit and then using an http API should be good enough, although all envs like k8s or DC/OS usually have a cli utility to do the job.
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