Github user 1ambda commented on the issue:
https://github.com/apache/zeppelin/pull/2150
It might be due to flaky tests. If so, please just restart failed jobs.
I'v just looked your travis build and it's ok
- https://travis-ci.org/andreaTP/zeppelin/builds/212066501
After CI is green, please close and re-open this PR. Then jenkins will
update status.
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