Github user jtstorck commented on the issue:
https://github.com/apache/nifi/pull/2947
@markap14 When listing a queue that is load balanced between two nodes in a
cluster, I'm seeing duplicate "Position" IDs. I gather they are unique per
node and being represented in the UI as they are reported from each node.
Unique Position IDs should be provided, right? I don't think we'd necessarily
want to add a column for which node the flowfile is on, but that's an
additional option.
<img width="1641" alt="screen shot 2018-09-14 at 6 29 53 pm"
src="https://user-images.githubusercontent.com/19271493/45577899-5b161800-b84c-11e8-9928-b78e6ac7a8fa.png">
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