Github user Leemoonsoo commented on the pull request: https://github.com/apache/zeppelin/commit/cb0b45080251b224f44abe8719865b756290a397#commitcomment-20082316 I made mistake on backporting this commit. Our merge tool couldn't handle this case so i manually cherrypicked and resolved the conflict. And i forgot adding author info in the commit. Commit history is immutable, so i can not easily rewrite history and add author info. So, i'm leaving comment here to make sure that this commit is authored by @1ambda and backported from https://github.com/apache/zeppelin/pull/1725
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