Github user jongyoul commented on the issue:
https://github.com/apache/zeppelin/pull/2329
@zjffdu Personally, I agree on your opinion. Before I start to do it, I
discussed a lot how to support yarn-cluster mode including spark. I concluded
it's not much weird to launch spark with yarn-client mode in yarn-cluster.
Actually, I expected this kind of reaction while I'm doing this job. Then I'll
finish it asap and do that with next step.
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