Folks, I would like to invite all to discuss the various Hadoop RPC encryption performance improvements. As you probably know, Hadoop RPC encryption currently relies on Java SASL, and have _really_ bad performance (in terms of number of RPCs per second, around 15~20% of the one without SASL)
There have been some attempts to address this, most notably, HADOOP-10768 <https://issues.apache.org/jira/browse/HADOOP-10768> (Optimize Hadoop RPC encryption performance) and HADOOP-13836 <https://issues.apache.org/jira/browse/HADOOP-13836> (Securing Hadoop RPC using SSL). But it looks like both attempts have not been progressing. During the recent Hadoop contributor meetup, Daryn Sharp mentioned he's working on another approach that leverages Netty for its SSL encryption, and then integrate Netty with Hadoop RPC so that Hadoop RPC automatically benefits from netty's SSL encryption performance. So there are at least 3 attempts to address this issue as I see it. Do we have a consensus that: 1. this is an important problem 2. which approach we want to move forward with -- A very happy Hadoop contributor
