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https://issues.apache.org/jira/browse/SOLR-8745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15201168#comment-15201168
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ASF subversion and git services commented on SOLR-8745:
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Commit 4fbfeb01230429b073039b4d16b8871c1854f413 in lucene-solr's branch 
refs/heads/apiv2 from [~shalinmangar]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=4fbfeb0 ]

SOLR-8745: Move CHANGES.txt entry to 6.1


> Deprecate ZkStateReader.updateClusterState(), remove uses
> ---------------------------------------------------------
>
>                 Key: SOLR-8745
>                 URL: https://issues.apache.org/jira/browse/SOLR-8745
>             Project: Solr
>          Issue Type: Improvement
>          Components: SolrCloud
>    Affects Versions: 5.4.1
>            Reporter: Scott Blum
>            Assignee: Shalin Shekhar Mangar
>              Labels: patch, performance, solrcloud
>             Fix For: master, 6.1
>
>         Attachments: SOLR-8745.patch, SOLR-8745.patch
>
>
> Forcing a full ZK cluster state update creates a lot of unnecessary work and 
> load at scale.  We need to deprecate and remove existing callers.
> - The one at the start of ClusterStateUpdater thread is fine, it's a one-time 
> thing.
> - The one in OverseerCollectionMessageHandler is getting removed in SOLR-8722
> - The rest of them can be replaced with a version that only updates a single 
> collection; not everything!
> Patch will be forthcoming.



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