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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2015/06/30 11:21:05 UTC

[jira] [Resolved] (LUCENE-6633) Remove DuplicateFilter

     [ https://issues.apache.org/jira/browse/LUCENE-6633?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adrien Grand resolved LUCENE-6633.
----------------------------------
    Resolution: Fixed

> Remove DuplicateFilter
> ----------------------
>
>                 Key: LUCENE-6633
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6633
>             Project: Lucene - Core
>          Issue Type: Task
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>             Fix For: 5.3
>
>         Attachments: LUCENE-6633.patch
>
>
> DuplicateFilter is a filter which aims at only exposing a single document per unique field value. It has some flaws, for instance it only works if you have a single leaf and we now have a better way to handle this use-case with DiversifiedTopDocsCollector. So I suggest that we just remove it and recommend users to use DiversifiedTopDocsCollector instead.



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