Github user echarles commented on the issue: https://github.com/apache/zeppelin/pull/2418 @jongyoul sorry, I was not clear enough. With frontend, I was meaning the web layer (so jetty). Jetty could communicate via a variety of protocols to the interpreters. Now going further in that direction, having protocols like REST or WebSocket would allow any king of clients to access the interpeters in direct - Those clients could be the current javascript of Zeppelin webapp, or any other kind of client (could be bash or python script...) This is unique opportunity to extend the Zeppelin user base - Btw, having the AAA (Authentication, Authorization, Auditing) functions at Interpreter level is IMHO a good design, even at the cost of some extra development or refactoring. I am curious to know what the community thinks about this...
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