Github user Leemoonsoo commented on the issue: https://github.com/apache/zeppelin/pull/836 It's ready for review. This PR provides experimental Java API to add pluggable components. Which is still i think pretty low level. Adding high level api (e.g. [ZEPPELIN-1003](https://issues.apache.org/jira/browse/ZEPPELIN-1003)) and providing API for other languages (e.g. scala, python, javascript, etc) will be the future work.
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