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https://issues.apache.org/jira/browse/SOLR-4400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Miller reassigned SOLR-4400:
---------------------------------

    Assignee: Mark Miller  (was: Erick Erickson)
    
> Rapidly opening and closing cores can lead to deadlock
> ------------------------------------------------------
>
>                 Key: SOLR-4400
>                 URL: https://issues.apache.org/jira/browse/SOLR-4400
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.1
>            Reporter: Erick Erickson
>            Assignee: Mark Miller
>             Fix For: 4.2, 5.0
>
>         Attachments: 4x_stack.txt, SOLR-4400.patch
>
>
> See the discussion at SOLR-4196. Under ridiculous loads (i.e. every request 
> causes a core to close and another one to open) Solr can lock up. This is 
> _only_ a problem if you are using transient cores (see SOLR-1028) with a 
> limited cache size. Simply lazily loading cores that are NOT transient 
> shouldn't have this problem, you need to be closing cores to get here.

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