Github user satishd commented on the pull request:
https://github.com/apache/storm/pull/827#issuecomment-161006346
I ran "mvn clean install" in storm root directory and it worked fine. I had
seen some intermittent failures when zookeeper was already running while
running "mvn clean install" in storm because of unexpected state in zookeeper.
It is not mandatory to have zookeeper running but it is better not to be
running while tests are run.
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