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https://issues.apache.org/jira/browse/SOLR-4011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erick Erickson reassigned SOLR-4011:
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    Assignee: Erick Erickson
    
> SolrCore - correct behavior while having error loading specific cores
> ---------------------------------------------------------------------
>
>                 Key: SOLR-4011
>                 URL: https://issues.apache.org/jira/browse/SOLR-4011
>             Project: Solr
>          Issue Type: Improvement
>          Components: multicore
>         Environment: RHEL 6.1/6.3
> Solr 3.6.1
>            Reporter: Gianluca Varisco
>            Assignee: Erick Erickson
>            Priority: Minor
>
> I've a multicore setup.  Solr.xml contains the following:
> <solr persistent="false">
>   <!--
>   adminPath: RequestHandler path to manage cores.  
>     If 'null' (or absent), cores will not be manageable via request handler
>   -->
> <cores adminPath="/admin/cores">
> <core name="a" instanceDir="/shop/www/htdocs/a/shop.staging/solr/app" 
> dataDir="/shop/solr/staging/a/data/" configName="solrconfig.xml" 
> schemaName="schema.xml" />
> <core name="b" instanceDir="/shop/www/htdocs/b/shop.staging/solr/app" 
> dataDir="/shop/solr/staging/b/data/" configName="solrconfig.xml" 
> schemaName="schema.xml" />
> <core name="c" instanceDir="/shop/www/htdocs/c/shop.staging/solr/app" 
> dataDir="/shop/solr/staging/c/data/" configName="solrconfig.xml" 
> schemaName="schema.xml" />
> </cores>
> </solr>
> When solr starts, it tries to LOAD all the cores. If one fails (no 
> solrconfig.xml or instanceDir found), the whole multicore configuration is 
> broken and Solr won't answer as well for the other two cores. 
> Is there a workaround for it? Reasons while it can happen is, for example, if 
> cores' creation in the XML are managed indipendently (e.g via Puppet) but 
> applications are not deployed in that instanceDir yet (therefore: no 
> solrconfig.xml/schema.xml). Is there a specific parameter to use?
>  

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