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https://issues.apache.org/jira/browse/SOLR-9014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15256974#comment-15256974
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ASF subversion and git services commented on SOLR-9014:
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Commit 922265b478296992189434040517368cf93d1b09 in lucene-solr's branch
refs/heads/master from [~shalinmangar]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=922265b ]
SOLR-9014: Deprecate and reduce usage of ClusterState methods which may make
calls to ZK via the lazy collection reference
> Deprecate and reduce usage of ClusterState methods which may make calls to ZK
> via the lazy collection reference
> ---------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-9014
> URL: https://issues.apache.org/jira/browse/SOLR-9014
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Fix For: master, 6.1
>
> Attachments: SOLR-9014.patch
>
>
> ClusterState has a bunch of methods such as getSlice and getReplica which
> internally call getCollectionOrNull that ends up making a call to ZK via the
> lazy collection reference. Many classes use these methods even though a
> DocCollection object is available. In such cases, multiple redundant calls to
> ZooKeeper can happen if the collection is not watched locally. This is
> especially true for Overseer classes which operate on all collections.
> We should audit all usages of these methods and replace them with calls to
> appropriate DocCollection methods.
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