Github user felixcheung commented on the issue: https://github.com/apache/zeppelin/pull/1856 I don't think we need to check for all 3 classes, so I believe this fix is good. what I don't understand is why it is failing for you but running just fine in travis CI where we have tests for Spark 2.1 - which is why I'm asking. to trigger test, close this PR and reopen it.
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