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Date: Tue, 14 Feb 2012 01:45:00 +0000 (UTC)
From: "Andrzej Bialecki  (Commented) (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Commented] (SOLR-2593) A new core admin action 'split' for
 splitting index
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    [ https://issues.apache.org/jira/browse/SOLR-2593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13207452#comment-13207452 ] 

Andrzej Bialecki  commented on SOLR-2593:
-----------------------------------------

Jason, see LUCENE-2632 for a possible way to implement this at the Lucene level. Splitting into arbitrary parts so far required multiple passes over input data, using the approach of tee/filter codecs it's possible to do this in one pass over the input data.
                
> A new core admin action 'split' for splitting index
> ---------------------------------------------------
>
>                 Key: SOLR-2593
>                 URL: https://issues.apache.org/jira/browse/SOLR-2593
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Noble Paul
>             Fix For: 4.0
>
>
> If an index is too large/hot it would be desirable to split it out to another core .
> This core may eventually be replicated out to another host.
> There can be to be multiple strategies 
> * random split of x or x% 
> * fq="user:johndoe"
> example :
> action=split&split=20percent&newcore=my_new_index
> or
> action=split&fq=user:johndoe&newcore=john_doe_index

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