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 <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
