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https://issues.apache.org/jira/browse/NIFI-5208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16501778#comment-16501778
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ASF GitHub Bot commented on NIFI-5208:
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Github user scottyaslan commented on the issue:
https://github.com/apache/nifi/pull/2757
Reviewing...
> Editing a flow on a Disconnected Node
> -------------------------------------
>
> Key: NIFI-5208
> URL: https://issues.apache.org/jira/browse/NIFI-5208
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework, Core UI
> Reporter: Matt Gilman
> Assignee: Matt Gilman
> Priority: Critical
> Fix For: 1.7.0
>
>
> Currently, editing on a flow on a disconnected node is allowed. This feature
> is useful when needing to debug a node-specific environmental issue prior to
> re-joining the cluster. However, this can also lead to issues when the user
> doesn't realize that the node they are viewing is disconnected. This was
> never an issue in our 0.x baseline as viewing the disconnected node required
> the user to manually direct their browser away from the NCM and towards the
> disconnected node.
> In 1.x, this can happen transparently without the need for the user to
> redirect their browser. There is a label at the top to indicate that the node
> is disconnected but this is not sufficient. If the user continues with their
> edits, it will make it difficult to re-join the cluster without manual
> inventions to retain their changes.
> There is a dialog that should inform the user that the cluster connection
> state has changed. However, there appears to be a regression that is
> preventing that dialog from showing. We should restore this dialog and make
> it confirm the users intent to make changes in a disconnected state.
> Furthermore, changes should be prevented without this confirmation.
> Confirmation should happen anytime the cluster connected state changes.
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