Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/1440
@Leemoonsoo I added some unit test, and also fix another bug. The bug is
that exception will be throw when display `Dataset`, because we assume the type
of each Record is Row while it is not true for `Dataset`, so I convert
`Dataset` to `DataFrame` first when displaying Dataset.
The failed test is irrelevant.
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