Github user byung-u commented on the issue: https://github.com/apache/zeppelin/pull/2540 Thank you for your review. I've tried to make CI green, but still fails though. It looks like r-base-dev package install fail. ![2017-08-16 14 37 36](https://user-images.githubusercontent.com/16890077/29348724-a9fe188e-8290-11e7-9bb2-74e732bf8c16.png) This issue also happened. * https://github.com/apache/zeppelin/pull/2445
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