Github user srdo commented on the issue:
https://github.com/apache/storm/pull/2698
Just so you don't spend too much time on it, neither HBase nor Cassandra
work with Java 9 right now. I skipped those modules when testing it last year.
Also I didn't get farther than building and running the tests with Java 9, so I
can't say whether it works beyond that. At the time I was hoping to be able to
upgrade HBase and Cassandra before too long and do more tests after that, but
they are still working on Java 9 support.
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