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Posted to dev@lucene.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2016/04/25 22:23:13 UTC
[jira] [Commented] (SOLR-9014) Deprecate and reduce usage of
ClusterState methods which may make calls to ZK via the lazy collection
reference
[ https://issues.apache.org/jira/browse/SOLR-9014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15256974#comment-15256974 ]
ASF subversion and git services commented on SOLR-9014:
-------------------------------------------------------
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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