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Posted to dev@lucene.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2015/06/11 08:10:00 UTC
[jira] [Commented] (SOLR-7660) Avoid redundant 'exists' calls made
to ZK while fetching cluster state updates
[ https://issues.apache.org/jira/browse/SOLR-7660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14581504#comment-14581504 ]
ASF subversion and git services commented on SOLR-7660:
-------------------------------------------------------
Commit 1684815 from shalin@apache.org in branch 'dev/trunk'
[ https://svn.apache.org/r1684815 ]
SOLR-7660: Avoid redundant 'exists' calls made to ZK while fetching cluster state updates
> Avoid redundant 'exists' calls made to ZK while fetching cluster state updates
> ------------------------------------------------------------------------------
>
> Key: SOLR-7660
> URL: https://issues.apache.org/jira/browse/SOLR-7660
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Shalin Shekhar Mangar
> Priority: Minor
> Labels: difficulty-easy, impact-medium
> Fix For: 5.3, Trunk
>
> Attachments: SOLR-7660.patch, SOLR-7660.patch
>
>
> As noted in https://issues.apache.org/jira/browse/SOLR-7636?focusedCommentId=14578332&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14578332
> {quote}
> we have CollectionsHandler -> ZK getChildren (/live_nodes) + ZK read (/clusterstate.json) + ZK getChildren + N * ZK exists (for getIndividualColls) + W * ZK exists + W * getData (for watched collections) + (N-W) * ZK exists + (N-W) * ZK getData (for non-watched collections).
> {quote}
> Some of the ZK exists calls can be avoided without changing the outcome.
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