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https://issues.apache.org/jira/browse/SOLR-5473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14057677#comment-14057677
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Noble Paul commented on SOLR-5473:
----------------------------------

bq.So the only real trade off is that a leader might not learn about a state 
change until a request fails rather than being alerted when the state change 
happens?

 A leader is always a part of a collection and is always notified of state 
changes. 

OTOH SolrJ will not learn about state changes till it makes a request

> Split clusterstate.json per collection and watch states selectively 
> --------------------------------------------------------------------
>
>                 Key: SOLR-5473
>                 URL: https://issues.apache.org/jira/browse/SOLR-5473
>             Project: Solr
>          Issue Type: Sub-task
>          Components: SolrCloud
>            Reporter: Noble Paul
>            Assignee: Noble Paul
>             Fix For: 5.0
>
>         Attachments: SOLR-5473-74 .patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74.patch, 
> SOLR-5473-74.patch, SOLR-5473-74.patch, SOLR-5473-74_POC.patch, 
> SOLR-5473-configname-fix.patch, SOLR-5473.patch, SOLR-5473.patch, 
> SOLR-5473.patch, SOLR-5473.patch, SOLR-5473.patch, SOLR-5473.patch, 
> SOLR-5473.patch, SOLR-5473.patch, SOLR-5473.patch, SOLR-5473.patch, 
> SOLR-5473.patch, SOLR-5473.patch, SOLR-5473.patch, SOLR-5473.patch, 
> SOLR-5473.patch, SOLR-5473.patch, SOLR-5473.patch, SOLR-5473.patch, 
> SOLR-5473_undo.patch, ec2-23-20-119-52_solr.log, ec2-50-16-38-73_solr.log
>
>
> As defined in the parent issue, store the states of each collection under 
> /collections/collectionname/state.json node



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