Github user merrimanr commented on the issue: https://github.com/apache/metron/pull/941 Sorry I should have documented this better in the PR description. The docker-machine ip address needs to be substituted in ElasticsearchTestUtils temporarily if you want to run this on your local Mac OS. There is a Jira for this work here: https://issues.apache.org/jira/browse/METRON-1356. Everything you've described including the TODO is intended to be handled there. Do you think that needs to come first before you review this PR?