Github user ravwojdyla commented on the issue:
https://github.com/apache/zeppelin/pull/1471
@felixcheung my reasoning for the change of default interpreter, is that
using `BeamInterpreter` in current form lacks benefits of IDE and gives no
advantages of Zeppelin itself (there are no display helpers, notebook env etc),
it's pure java interpreter - it would make more sense to use Beam Java SDK
inside scala interpreter - just for the sake of more friendly dev/notebook
experience.
That said, it is not super important from my perspective which one is the
default (?), so I have reverted that change.
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