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https://issues.apache.org/jira/browse/SOLR-4770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13643063#comment-13643063
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Stefan Matheis (steffkes) commented on SOLR-4770:
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Mark, currently we are not able to display such information .. because they
don't exist in the {{clusterstate.json}} file, which is used for almost all the
cloud-related UI things as underlying information. You can check what's
available right now with
{{/solr/zookeeper?detail=true&path=%2Fclusterstate.json}} (or access it through
the UI, as you like) .. and that's not really that much information about
another instance.
The UI itself can't check for the details (f.e. by requesting {{/admin/system}}
which powers the Dashboard) because that would be a CrossDomain-Request
(javascript requires scheme, host & port to be the same) which is not possible
on the client-side.
So, if we'd like to have this information there .. we have to get it (somehow)
into ZK. Should be doable, but i have not enough knowledge on that topic. ..
JFYI [[email protected]]
> Mouse-over info for other nodes in SolrCloud rendering
> ------------------------------------------------------
>
> Key: SOLR-4770
> URL: https://issues.apache.org/jira/browse/SOLR-4770
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.2
> Reporter: Mark Bennett
>
> We render a nice graphical view of your current cluster from the URL
> http://localhost:8983/solr/#/~cloud
> It'd be nice to gather some info about those other nodes without having to
> visit them. Since you can't right-click to open those nodes in another tab,
> your only choice now is to duplicate that tab, and then click the link.
> This was mentioned in SOLR-4438 but Stefan Matheis (steffkes) requested that
> it be broken out into a separate task and detailed a bit more.
> Mouse-Over often indicates a Balloon-help style thing, but another option is
> to reserve another part of the screen down below that can display node info,
> and then refresh it as the mouse hovers over various nodes. I'm not sure
> which is easier nor which is more accessible.
> Sadly some devices don't support Hover, and the click method is already used
> to take you to that other node. So perhaps it'd be easier to display some
> type of "(i)" / Info icon that you can specifically click on to see that
> node's info, without jumping to it.
> Specific items it might be nice to see:
> (generally mirroring what's on default Dashboard screen if you were to visit
> that node)
> * Start
> * Host
> * CWD
> * Instance
> * Data
> * Index
> * Solr & Lucene version (to help with upgrading, though not sure we need all
> 4 fields?)
> Resources:
> * JVM meory
> * maybe Physical Memory
> * Some hint about disk stats?
> Args of:
> -DnumShards
> -DzkRun
> -STOP
> ... not sure how many.... could get too much, but some would be handy
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