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https://issues.apache.org/jira/browse/NIFI-4101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16058061#comment-16058061
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Andy LoPresto commented on NIFI-4101:
-------------------------------------

I do think this is an ambitious feature idea. While not close to solving the 
problem stated here, you can clean up the connection lines by double clicking 
on the lines to add navigation points and drag them to avoid or reduce 
intersections. 

I'll open a separate Jira for another idea I just had -- selecting a component 
highlights (without selecting) all of its upstream and downstream connections 
to help illustrate where the data is flowing. 

> Inter-process group portals
> ---------------------------
>
>                 Key: NIFI-4101
>                 URL: https://issues.apache.org/jira/browse/NIFI-4101
>             Project: Apache NiFi
>          Issue Type: Improvement
>            Reporter: Nicholas Carenza
>            Priority: Minor
>              Labels: ui
>         Attachments: Drawing.jpeg, Screen Shot 2017-06-21 at 9.59.22 AM.png
>
>
> I'd like to be able to create something like ports to transport flowfiles 
> around a process group to avoid having criss-crossed relationship lines like 
> in the attached screenshot.
> I drew something that represents what I'm talking about and attached a 
> sketch. I recreated the flow from the screenshot using portals.
> Portals would kind of be like funnels in that they don't have functionality 
> of their own and have a queue for each relationship attached to them.



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