Github user doanduyhai commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/600#issuecomment-170399254 @corneadoug @Leemoonsoo Code review has been done by @brianwawok and I pushed some refactoring. The build succeeded but Travis marked it as failed because : _The log length has exceeded the limit of 4 Megabytes (this usually means that test suite is raising the same exception over and over)_ Looks like this is a very common issue with Travis, it is reported here: https://github.com/travis-ci/travis-ci/issues/3865
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