Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/1787
@felixcheung The test fail is due to api change in spark 2.1.0.
SPARK-17919 remove timeout, not sure why. I don't think we need to remove
it.
https://github.com/apache/spark/pull/15471/files. @felixcheung I see you
are the reviewer, you may know the background.
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