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https://issues.apache.org/jira/browse/SOLR-2765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13122196#comment-13122196
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Mark Miller commented on SOLR-2765:
-----------------------------------
This is where incremental update of the cloud state gets tricky...
If you have something like these roles at the shard level, all of a sudden you
cannot change them on the fly because the new incremental update will not pick
them up.
Its a tricky situation - without incremental, things start to get nasty at a
huge number of shards. One possibility is that everyone also watches another
node, that when pinged, causes a full read - so that must cloud state updates
are incremental, but when per shard info like this is changed on the fly, you
can then trigger a full read by everyone...
> Shard/Node states
> -----------------
>
> Key: SOLR-2765
> URL: https://issues.apache.org/jira/browse/SOLR-2765
> Project: Solr
> Issue Type: Sub-task
> Components: SolrCloud, update
> Reporter: Yonik Seeley
> Fix For: 4.0
>
> Attachments: shard-roles.patch
>
>
> Need state for shards that indicate they are recovering, active/enabled, or
> disabled.
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