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https://issues.apache.org/jira/browse/NIFI-5695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16648416#comment-16648416
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ASF GitHub Bot commented on NIFI-5695:
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Github user bbende commented on the issue:
https://github.com/apache/nifi/pull/3070
Verified this fixes the issue, looks good to me.
> Connections to/from child groups' ports get confused when importing flow from
> Flow Registry
> -------------------------------------------------------------------------------------------
>
> Key: NIFI-5695
> URL: https://issues.apache.org/jira/browse/NIFI-5695
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Critical
> Fix For: 1.8.0
>
> Attachments: Group-After-Import.png, Original-Group.png
>
>
> To replicate, create a Process Group with the following components:
> InputPort -> LogAttribute -> OutputPort
> Then move to the higher group and add this to Version Control.
> Next, import another copy of the same group.
> Connect the first child group's OutputPort to the second group's InputPort.
> Add a GenerateFlowFile and connect it to the first group's Input Port.
> Add a LogAttribute and connect the second group's OutputPort to it.
> Now, version control the outer group.
> At this point, all should behave as expected.
> Now, if you import a second copy of the outer group, the newly imported group
> has connections going to/from the wrong ports. It appears that NiFi is not
> properly mapping a port in a child group to the appropriate child group if
> there are multiple copies of the (independently versioned) child group.
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