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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 updated SOLR-1782:
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Description:
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.
---
New users interested in mixing stats & facets are encouraged to ignore the
stats.facet param and instead combine stats.field with facet.pivot to achieve
similar results more efficiently...
https://cwiki.apache.org/confluence/display/solr/The+Stats+Component#TheStatsComponent-TheStatsComponentandFaceting
was: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.
> 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.
> ---
> New users interested in mixing stats & facets are encouraged to ignore the
> stats.facet param and instead combine stats.field with facet.pivot to achieve
> similar results more efficiently...
> https://cwiki.apache.org/confluence/display/solr/The+Stats+Component#TheStatsComponent-TheStatsComponentandFaceting
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