Github user bzz commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/789#issuecomment-202170740 @Leemoonsoo code looks good and rationale for customizing at least JVM properties now and leaving ui for env vars for further improvements makes sense. If there are other PRs that handle this issue better - we can discuss alternative approaches and pick what's better implemented, otherwise @Leemoonsoo contribution looks good to merge for me.
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