Github user justinleet commented on the issue:
https://github.com/apache/incubator-metron/pull/462
Apparently https://issues.apache.org/jira/browse/METRON-728 occurs more
frequently on travis than my local machine.
The Travis running on my personal account already succeed
(https://travis-ci.org/justinleet/incubator-metron/builds/204210174)
I'll kick Travis and hopefully we aren't waiting 16 hours for a build
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