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Posted to dev@lucene.apache.org by "Martijn van Groningen (Resolved) (JIRA)" <ji...@apache.org> on 2012/03/21 13:43:39 UTC
[jira] [Resolved] (LUCENE-3444) Distinct field value count per
group
[ https://issues.apache.org/jira/browse/LUCENE-3444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Martijn van Groningen resolved LUCENE-3444.
-------------------------------------------
Resolution: Fixed
Lucene Fields: (was: New)
Committed to trunk.
> Distinct field value count per group
> ------------------------------------
>
> Key: LUCENE-3444
> URL: https://issues.apache.org/jira/browse/LUCENE-3444
> Project: Lucene - Java
> Issue Type: New Feature
> Components: modules/grouping
> Reporter: Martijn van Groningen
> Fix For: 4.0
>
> Attachments: LUCENE-3444.patch, LUCENE-3444.patch, LUCENE-3444.patch, LUCENE-3444.patch
>
>
> Support a second pass collector that counts unique field values of a field per group.
> This is just one example of group statistics that one might want.
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