Github user bbende commented on the issue:
https://github.com/apache/nifi/pull/2171
Update... You can ignore my comment about how to test it from earlier, I
was able to get it to work now.
This brings me to a new question, should we have a property for a prefix
that would be appended to each metric name?
Right now most of the metrics show up at the top-level and it isn't really
clear that they came from NiFi, and if you were sending metrics from different
NiFi instances to the same Graphite instance, you might want to separate them
somehow.
So maybe a property like "Metric Name Prefix" with a default value of
"nifi"?
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