Github user nickwallen commented on the issue:
https://github.com/apache/metron/pull/1221
> @merrimanr: Which topologies should we provide defaults for?
To follow-up on the other topologies, we do not set a [default for the
Profiler](https://github.com/apache/metron/blob/2ee6cc7e0b448d8d27f56f873e2c15a603c53917/metron-deployment/packaging/ambari/metron-mpack/src/main/resources/common-services/METRON/CURRENT/configuration/metron-profiler-env.xml#L168),
which we probably should.
I am not sure about Parsers.---
