Github user MikeThomsen commented on the issue:
https://github.com/apache/nifi/pull/3049
@snagacarl since this was for the Mongo lookup service, wanted to make sure
that you're aware that in 1.8 there will be a slight breaking change. The
"configuration" controller service and the lookup service are now cleanly
separated so that the lookup service can be cheerfully ignorant of connection
details like the URL, SSL and authentication details. That way plugging in a
new cluster or something will be faster and easier for Mongo users.
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