Github user vanzin commented on the issue: https://github.com/apache/spark/pull/19227 > If people have a standalone cluster they have secured off for only a set of users and they all run under a single user, having access to secure HDFS is still very useful. No disputing that, but you can do that today by manually deploying a keytab to all worker nodes, and making sure its "kinit'ed" before the worker daemon goes up (and the login refreshed periodically). No changes in Spark needed for that.
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