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https://issues.apache.org/jira/browse/NIFI-5758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665326#comment-16665326
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Pierre Villard commented on NIFI-5758:
--------------------------------------

I don't think variables are duplicated, it's just that you can override the 
value of a variable defined in a process group in embedded process groups. You 
can have a look here: 
[https://nifi.apache.org/docs/nifi-docs/html/user-guide.html#variable-scope]

Let us know if you still think there is an issue.

> Duplicate Variables
> -------------------
>
>                 Key: NIFI-5758
>                 URL: https://issues.apache.org/jira/browse/NIFI-5758
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Variable Registry
>    Affects Versions: 1.7.1
>            Reporter: Joseph Rosado
>            Priority: Major
>         Attachments: nifi-duplicate-variables.PNG
>
>
> We have a process group with variables defined for the entire flow.  However, 
> the variables are duplicated in each nested process group.  Therefore, making 
> it difficult to manage, and identify issues. (see attached)



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