Andrzej Bialecki  commented on SOLR-8207:

I'm not sure if this fits the scope of this ticket, but we need to make sure 
the UI can display clusters with 1000-s of nodes and 1000-s of collections and 
replicas, without choking or crashing the browser.

> Add "Nodes" view to the Admin UI "Cloud" tab
> --------------------------------------------
>                 Key: SOLR-8207
>                 URL: https://issues.apache.org/jira/browse/SOLR-8207
>             Project: Solr
>          Issue Type: New Feature
>          Components: Admin UI
>            Reporter: Upayavira
>            Assignee: Jan H√łydahl
>            Priority: Major
>             Fix For: master (8.0), 7.5
>         Attachments: SOLR-8207.patch, SOLR-8207_shardstate.patch, 
> SOLR-8207_shardstate.patch, SOLR-8207_underscores.patch, 
> SOLR-8207_underscores.patch, image-2018-08-10-10-33-08-290.png, 
> node-compact.png, node-details.png, node-hostcolumn.png, 
> node-toggle-row-numdocs.png, nodes-tab-real.png, nodes-tab.png, nodes.png
>          Time Spent: 10m
>  Remaining Estimate: 0h
> The various sub-tabs of the "Cloud tab" were designed before anyone was 
> making real use of SolrCloud, and when we didn't really know the use-cases we 
> would need to support. I would argue that, whilst they are pretty (and 
> clever) they aren't really fit for purpose (with the exception of tree view).
> Issues:
> * Radial view doesn't scale beyond a small number of nodes/collections
> * Paging on the graph view is based on collections - so a collection with 
> many replicas won't be subject to pagination
> * The Dump feature is kinda redundant and should be removed
> * There is now a major overlap in functionality with the new Collections tab
> What I'd propose is that we:
>  * promote the tree tab to top level
>  * remove the graph views and the dump tab
>  * add a new Nodes tab
> This nodes tab would complement the collections tab - showing nodes, and 
> their associated replicas/collections. From this view, it would be possible 
> to add/remove replicas and to see the status of nodes. It would also be 
> possible to filter nodes by status: "show me only up nodes", "show me nodes 
> that are in trouble", "show me nodes that have leaders on them", etc.
> Presumably, if we have APIs to support it, we might have a "decommission 
> node" option, that would ensure that no replicas on this node are leaders, 
> and then remove all replicas from the node, ready for it to be removed from 
> the cluster.

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