Hello, Similar to other cluster systems e.g Zookeeper, Hazelcast. Spark has the problem that is protected from the outside world however anyone having access to the host can run a spark node without the need for authentication. Currently we are using Spark 1.3.1. Is there a way to enable authentication so only users that have the secret can run a node. Current solution involves configuring the job via env variable however anyone running 'ps' command can see it.
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