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https://issues.apache.org/jira/browse/NIFI-3155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16240423#comment-16240423
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ASF GitHub Bot commented on NIFI-3155:
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GitHub user markap14 opened a pull request:
https://github.com/apache/nifi/pull/2253
NIFI-3155: Fix issue of Remote Group Port having ID the same as on th…
…e remote system, by adding an additional targetId field RemoteGroupPort's
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You can merge this pull request into a Git repository by running:
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Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/nifi/pull/2253.patch
To close this pull request, make a commit to your master/trunk branch
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This closes #2253
----
commit ff9a2ee8752be6b6e48932d85def27fbe5971405
Author: Mark Payne <[email protected]>
Date: 2017-11-06T15:10:29Z
NIFI-3155: Fix issue of Remote Group Port having ID the same as on the
remote system, by adding an additional targetId field RemoteGroupPort's
----
> Remote Group Port UUIDs
> -----------------------
>
> Key: NIFI-3155
> URL: https://issues.apache.org/jira/browse/NIFI-3155
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Reporter: Matt Gilman
> Assignee: Mark Payne
> Priority: Critical
> Fix For: 1.5.0
>
>
> Remote Group Ports assume the UUID of the port on the target instance. This
> is critical for retaining which port the connection is associated with.
> However, this is problematic for any flow which contains multiple RPGs
> pointed to the same target instance. Associating the underlying component
> when only an ID is known (ie provenance) is impossible as the UUID is
> ambiguous.
> This issue also exists for self-referencing RPGs but is mitigated with extra
> logic around these troublesome scenarios. For instance, we can differentiate
> the Remote Group Port from the Root Group Port of a self-referencing RPG by
> looking at the component type. However, this isn't possible with multiple
> RPGs referencing the same target instance.
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