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https://issues.apache.org/jira/browse/SOLR-1782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hoss Man resolved SOLR-1782.
----------------------------
       Resolution: Won't Fix
    Fix Version/s: 5.0

I'm marking this as resolved:won't fix since SOLR-6351 has provided an 
alternative solution that works better and supports more options then 
stats.facet ever did.

> stats.facet assumes FieldCache.StringIndex - fails horribly on multivalued 
> fields
> ---------------------------------------------------------------------------------
>
>                 Key: SOLR-1782
>                 URL: https://issues.apache.org/jira/browse/SOLR-1782
>             Project: Solr
>          Issue Type: Bug
>          Components: search
>    Affects Versions: 1.4
>         Environment: reproduced on Win2k3 using 1.5.0-dev solr ($Id: 
> CHANGES.txt 906924 2010-02-05 12:43:11Z noble $)
>            Reporter: Gerald DeConto
>            Assignee: Hoss Man
>             Fix For: 5.0
>
>         Attachments: SOLR-1782.2.patch, SOLR-1782.2013-01-07.patch, 
> SOLR-1782.2013-04-10.patch, SOLR-1782.patch, SOLR-1782.patch, 
> SOLR-1782.patch, SOLR-1782.solr-4.2.1.patch, SOLR-1782.test.patch, index.rar
>
>
> the StatsComponent assumes any field specified in the stats.facet param can 
> be faceted using FieldCache.DEFAULT.getStringIndex.  This can cause problems 
> with a variety of field types, but in the case of multivalued fields it can 
> either cause erroneous false stats when the number of distinct values is 
> small, or it can cause ArrayIndexOutOfBoundsException when the number of 
> distinct values is greater then the number of documents.



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