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https://issues.apache.org/jira/browse/SOLR-16909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17748256#comment-17748256
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Ishan Chattopadhyaya commented on SOLR-16909:
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+1
> Collections LIST command should fetch ZK data, not cached state
> ---------------------------------------------------------------
>
> Key: SOLR-16909
> URL: https://issues.apache.org/jira/browse/SOLR-16909
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Reporter: David Smiley
> Priority: Major
>
> The LIST command to the Collections API presently returns all collections
> from the cached ClusterState. The proposal here is to fetch the child nodes
> in ZooKeeper instead. While the distinction is minor, the intent is to
> improve robustness / comprehensiveness. It may mean a collection is listed
> that is being created or being deleted that otherwise might not have been
> returned. The scenario driving this is to facilitate cleanup daemons that
> identify potentially left-over data from a collection creation or deletion
> that maybe failed (partial create or delete).
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