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https://issues.apache.org/jira/browse/SOLR-350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12572080#action_12572080
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Henri Biestro commented on SOLR-350:
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Otis, reading your requirements, I'd be considering using a Solr core to handle 
an indexed version of multicore.xml; if you have a few thousands indices, it 
might be convenient to use queries in some occasions to select/retrieve 
one/many of them.
The xml version of the multicore persistent file could be written at 
application/multicore shutdown and the Lucene based one could be recreated at 
application/multicore startup; creating a new index would just induce creating 
a new document in the multicore core (and in fact all CRUD operations could be 
handled that way) and we'd benefit from Solr autocommit feature & al, tackling 
your functional requirements reusing well-known capabilities & code.
For ~10 indices/cores, this seems like overkill though... 

On configuring easily the data/index dir from multicore.xml, it seems we all 
agree that variables definitions should be able to allow just that; the 
non-extensible version of the feature (see previous comment)- where we dont 
allow the user to augment the environment but only expose 'solr.multicore.*'- 
did not trigger any comment yet, Otis/Hoss/Ryan what do you think of it ?

> Manage Multiple SolrCores
> -------------------------
>
>                 Key: SOLR-350
>                 URL: https://issues.apache.org/jira/browse/SOLR-350
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 1.3
>            Reporter: Ryan McKinley
>         Attachments: SOLR-350-MultiCore.patch, SOLR-350-MultiCore.patch, 
> SOLR-350-MultiCore.patch, SOLR-350-Naming.patch, SOLR-350-Naming.patch, 
> solr-350.patch, solr-350.patch, solr-350.patch, solr-350.patch, 
> solr-350.patch, solr-350.patch, solr-350.patch, solr-350.patch, solr-350.patch
>
>
> In SOLR-215, we enabled support for more then one SolrCore - but there is no 
> way to use them yet.
> We need to make some interface to manage, register, modify avaliable SolrCores

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