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From "Mark Miller (Commented) (JIRA)" <>
Subject [jira] [Commented] (SOLR-3162) Continue work on new admin UI
Date Tue, 28 Feb 2012 15:29:46 GMT


Mark Miller commented on SOLR-3162:

Wishlist item: 

The zookeeper info has information about the current cluster state, but its not really in
a very user friendly consumable form.

It would be really great if we had a more graphical representation of cluster using the information
from zookeeper.

All of the information to build such a view is in the zookeeper servlet.

The clusterstate.json file has the layout and state about each node, and the /live_nodes list
gives which nodes are considered up and down by zookeeper. Together, this gives the major
status of the cluster.

So for a cluster that had a clusterstate.json with one collection, 2 shards, and 2 nodes for
each shard, you might imagine seeing 4 circles arranged in a square under the heading "collection1".
There would be a row of circles for each shard and a column for each replica. One of the circles
would represent a shard entry that did not have a node_name under /live_nodes, so it would
be black. Another circle would represent a shard entry that had a node_name that was under/live_nodes
and had a state of active so it would be green. Another circle would be good with /live_nodes
but have a state of recoverying, so it would be yellow. The final circle would be good with
/live_nodes but have a state of recovery_failed, so it would be red.

At a glance, you could roughly see what your cluster looked like, and what state it was in.
Then of course you could also add more, but this would be the basics. Just an idea ;)
> Continue work on new admin UI
> -----------------------------
>                 Key: SOLR-3162
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: Schema and Analysis
>    Affects Versions: 4.0
>            Reporter: Erick Erickson
>            Assignee: Erick Erickson
>         Attachments: SOLR-3162.patch, SOLR-3162.patch
> There have been more improvements to how the new UI works, but the current open bugs
are getting hard to keep straight. This is the new catch-all JIRA for continued improvements.

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