Github user merrimanr commented on the issue: https://github.com/apache/metron/pull/834 After reading this whole thread I agree with @ottobackwards. If we installed and started all services and THEN installed our parsers separately this whole issue goes away. If a parser's template doesn't exist or isn't installed correctly, it fails and hopefully we know exactly why. That is obviously a major architectural change and won't be solved in this PR. Since we're in a situation where we do include default parsers as part of the installation, I think they should work out of the box and fail fast if there are not installed correctly. Would some of the concerns be alleviated with https://github.com/apache/metron/pull/831? +1 from me either way.