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https://issues.apache.org/jira/browse/SOLR-1782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019600#comment-13019600
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David Christianson commented on SOLR-1782:
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Is a fix anticipated? Already in the next version which we should just
download? Other issues?
We are currently running 1.4.1 (955469) and are seeing this problem for some
applications. The patch given does not apply out of the box to 1.4.1 (955469)
without a few tweaks but so far appears to work.
> 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
> Attachments: SOLR-1782.2.patch, SOLR-1782.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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