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https://issues.apache.org/jira/browse/LUCENE-6268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14328984#comment-14328984
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Robert Muir commented on LUCENE-6268:
-------------------------------------

OK I agree, lets just deprecate them as-is for now.

On a followup issue, maybe we can allow a similar api to be exposed on 
query/weight/scorer, so that booleanquery can do the optimizations 
filteredquery and booleanfilter are doing (any optimizations that really help 
and not hurt). If we did this, then I think we could remove the duplicate impls.

> Replace doc values filters with queries having approximations
> -------------------------------------------------------------
>
>                 Key: LUCENE-6268
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6268
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>             Fix For: 5.1
>
>         Attachments: LUCENE-6268.patch
>
>
> We should use approximations in order to deal with queries/filters that have 
> slow iterators such as doc-values based queries/filters.



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