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https://issues.apache.org/jira/browse/SOLR-1782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12865973#action_12865973
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Hoss Man commented on SOLR-1782:
--------------------------------
I'm pokign around the attached RAR file now, and two interesting things jump
out at me:
First: StatsFacetField is multivalied. every doc has exactly 3 values, but on
some cases the value is repeated...
{noformat}
<doc>
<arr name="StatsFacetField">
<int>2</int>
<int>3</int>
<int>1</int>
</arr>
<int name="ValueOfOneField">1</int>
<int name="id">7631</int>
</doc>
<doc>
<arr name="StatsFacetField">
<int>3</int>
<int>3</int>
<int>1</int>
</arr>
<int name="ValueOfOneField">1</int>
<int name="id">7453</int>
</doc>
{noformat}
Second: the stat facet counts produced by this sample index have the
(conicidental?) property that the sum of all the "counts" from each value of
the StatsFacetField equals the total number of docs -- which should not be the
case since each doc contains multiple values. (Note: the output from Gerald's
initial email didn't demonstrate this, but the index included in the rar file
is inconsistent with his initial email in other ways, so i believe this one was
generated with slightly differnet configs)
I think this suggests that the the bug in StatsComponent is triggered when the
stats.facet field refers to a multivalued field. I'm going to see if i can
create a simple JUnit test.
> unexpected statscomponent values
> --------------------------------
>
> 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: index.rar
>
>
> I wanted to understand the statscomponent better, so I setup a simple test
> index with a few thousand docs. In my schema I have:
> - an indexed multivalue sint field (StatsFacetField) that can contain values
> 0 thru 5 that I want to use as my stats.facet field.
> - an indexed single value sint field (ValueOfOneField) that will always
> contain the value 1 and that I want stats on for this test
> When I execute the following query:
> http://localhost:8080/solr/select?q=*:*&stats=true&stats.field=ValueOfOneField&stats.facet=StatsFacetField&rows=0&facet=on&facet.limit=10&facet.field=StatsFacetField
> For this situation (*:*) I was expecting that the statscomponent Count/Sum
> values for each possible value in StatsFacetField to match the facet values
> for StatsFacetField. They don't. Some are close (ie 204 vs 214) while
> others are way off (ie 230 vs 8000)
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