Please send a pull request to update the doc. Thanks.

On Tue, Aug 9, 2016 at 6:48 AM, Michael Gummelt <mgummelt@mesosphere.io> wrote:
I was checking if RPC calls can be encrypted and I saw here that the docs here (http://spark.apache.org/docs/latest/configuration.html) say that SASL encryption is "currently only supported by the block transfer service."

However, it seems that RPC can be SASL encrypted as well: https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/rpc/netty/NettyRpcEnv.scala#L64

Is this accurate?  If so, I'll submit a PR to update the docs.

--
Michael Gummelt
Software Engineer
Mesosphere