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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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Steven Bower updated SOLR-1782:
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Attachment: SOLR-1782.2013-04-10.patch
Attached is a patch that I believe fixes the issues found in the latest unified
patch from (2013.01.28)... The previous patch was interchangably using term
nums from an UninvertedField with a FieldCache... this failed in cases where
there were multiple values in the facet field.
I updated to use uif.lookupTerm() and a TermsEnum generated from
uif.getOrdTermsEnum()..
All the tests now pass, but I am uncertain of the performance/memory footprint
of the GetOrdTermsEnum() and/or whether it would be possible to hold onto this
enum for longer than I am now.
> 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
> Attachments: index.rar, SOLR-1782.2013-01-07.patch,
> SOLR-1782.2013-04-10.patch, SOLR-1782.2.patch, SOLR-1782.patch,
> SOLR-1782.patch, SOLR-1782.patch, SOLR-1782.test.patch
>
>
> 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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