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https://issues.apache.org/jira/browse/NIFI-2408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15404595#comment-15404595
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Matt Gilman commented on NIFI-2408:
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[~markap14] I've updated the UI to allow the user to see the cluster screen
when a node is disconnected. I additionally had to update the checks in the
cluster endpoints to attempt the action when clustered but not specifically
connected to the cluster.
Once those changes were in place I stood up a 3 node cluster. On node 1 I
disconnected node 2. On node 1 the cluster listing showed node 2 as
disconnected. However, when I navigated to node 2 and viewed the cluster
listing, it showed node 2 as connected.
Will need some additional guidance as to why these different nodes have
different views of the clustering listing.
> If a node is disconnected, it should still provide user ability to see the
> 'cluster screen'
> -------------------------------------------------------------------------------------------
>
> Key: NIFI-2408
> URL: https://issues.apache.org/jira/browse/NIFI-2408
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core UI
> Reporter: Mark Payne
> Assignee: Matt Gilman
> Fix For: 1.0.0
>
>
> A decision was made a while back that if a node is disconnected from the
> cluster, the 'cluster screen' should not be available in the menu in the
> top-right corner. However, after using the app like this, I now think it was
> a bad decision. The node is still part of the cluster, even though it is
> disconnected. Unless the user clicks 'remove', the node is a part of the
> cluster, so should be able to render the cluster information.
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