Github user justinleet commented on the issue:
https://github.com/apache/metron/pull/1106
@cestella I don't think they were ever in. We don't run the mvn site goal
as part of our build (although we should). I'd prefer to slot that into one of
the existing builds, because apparently at least on personal Travis having more
than 4 subbuilds means that you're waiting for the fifth.
There's a little bit of adjustment to make that happen properly (since it's
just running `$SCRIPT` right now, you can't just throw in && mvn site). I'm
testing that adjustment from a different branch right now, and will update the
PR, but Travis is being a little finicky.
Having said that, I'd be in favor of making that a separate PR and pulling
this one in as-is (plus any adjustments we want), because I'd really like the
unit tests working more than the site
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