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From "Scott Blum (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-8745) Deprecate ZkStateReader.updateClusterState(), remove uses
Date Wed, 02 Mar 2016 19:54:18 GMT

    [ https://issues.apache.org/jira/browse/SOLR-8745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15176351#comment-15176351
] 

Scott Blum commented on SOLR-8745:
----------------------------------

BTW: it's on my TODO list to take a look at SOLR-8323!

> 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
>         Attachments: 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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