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https://issues.apache.org/jira/browse/SOLR-2593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050236#comment-13050236
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Noble Paul commented on SOLR-2593:
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bq. the fq type option is basically going to require making a full copy of hte
index and then deleting by query...
Lucene does it better. We can pass a Filtered Index to a new writer and it
creates a new index w/ only those docs. I was surprised at the speed at which
it split a dummy 1million doc index in < 1 sec
> A new core admin command '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
> example :
> command=split&split=20percent&newcore=my_new_index
> or
> command=split&fq=user:johndoe&newcore=john_doe_index
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