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From Jan Høydahl (JIRA) <>
Subject [jira] [Commented] (SOLR-8207) Add "Nodes" view to the Admin UI "Cloud" tab
Date Wed, 08 Aug 2018 19:34:00 GMT


Jan Høydahl commented on SOLR-8207:

{quote}The reason for ? is that I only recently fixed a bug in SplitShardCmd where the names
of sub-replicas would be missing the replica type character,
Hmm, could that be the case if people have created a collection in Solr 6 and then upgrade
to Solr 7?
{quote}Also shards, when splitted are called shard1_1_1
Aha. What would be the Metric key name for such a shard [~ab]? Supposing it is:
...then the perfect regex replace would be:
replace(/(.*?)_(shard(\d+_?)+)_(replica_.\d+)/, '\$1.\$2.\$4')

> Add "Nodes" view to the Admin UI "Cloud" tab
> --------------------------------------------
>                 Key: SOLR-8207
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: Admin UI
>            Reporter: Upayavira
>            Assignee: Jan Høydahl
>            Priority: Major
>             Fix For: master (8.0), 7.5
>         Attachments: SOLR-8207.patch, SOLR-8207_underscores.patch, SOLR-8207_underscores.patch,
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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