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https://issues.apache.org/jira/browse/SOLR-12386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17384270#comment-17384270
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Mark Robert Miller commented on SOLR-12386:
-------------------------------------------

Zookeeper coordinates. It’s one of the most basic recipes to create a cluster 
lock. On startup, get the lock. State exists? Move on. Does not exist? Create 
the zk layout. Collection, shard creation is even simpler as it does not 
require that. Just bang out the collection nodes up front. 

> Test fails for "Can't find resource" for files in the _default configset
> ------------------------------------------------------------------------
>
>                 Key: SOLR-12386
>                 URL: https://issues.apache.org/jira/browse/SOLR-12386
>             Project: Solr
>          Issue Type: Test
>          Components: SolrCloud
>            Reporter: David Smiley
>            Priority: Minor
>         Attachments: cant find resource, stacktrace.txt
>
>
> Some tests, especially ConcurrentCreateRoutedAliasTest, have failed 
> sporadically failed with the message "Can't find resource" pertaining to a 
> file that is in the default ConfigSet yet mysteriously can't be found.  This 
> happens when a collection is being created that ultimately fails for this 
> reason.



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