Github user anandsubbu commented on the issue:
https://github.com/apache/metron/pull/583
@merrimanr , this is because of the following reason:
In the "Assign Masters" page of the Ambari deployment wizard, there is a
check for the Metron REST host to have storm supervisor installed. This is
currently displayed as an Error message.
However in the flow of the wizard, the storm supervisor selection can only
be done in the subsequent screen. So, this message should be changed into a
Warning instead.
This will be inline with the check that we have for Metron Parsers host
co-location with Storm supervisor, which is also a WARN. See
[here](https://github.com/apache/metron/blob/master/metron-deployment/packaging/ambari/metron-mpack/src/main/resources/common-services/METRON/CURRENT/service_advisor.py#L65).
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