Github user r-kamath commented on the issue:
https://github.com/apache/zeppelin/pull/1247
@jongyoul Yes. this is copied from rest api. We should probably keep both
options and use websocket on zeppelin UI. IMHO we all communications on the ui
should happen via websockets and avoid multiple calls to server. I'll be
cleaning up the duplication in my next commit. @prabhjyotsingh also had similar
comment on code duplication.
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