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https://issues.apache.org/jira/browse/LUCENE-10438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17497068#comment-17497068
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Greg Miller commented on LUCENE-10438:
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Thanks [~jpountz]. Yep, that's exactly was I was thinking (but didn't describe
as well). I like the idea of experimenting with this. I also think this idea
could be applicable in some "non-browse" cases as well where the user knows the
values they want counted. There could be some cases where it's more efficient
to actually intersect those queries with the match set than to accumulate
counts for all values. I think Solr might have a version of faceting that does
this? Basically cases where the user knows the values they want counts for
ahead of time (as opposed to a "top-n" type request), and the number of
distinct values they want counted is much smaller than the overall cardinality
of the faceting field.
> Leverage Weight#count in lucene/facets
> --------------------------------------
>
> Key: LUCENE-10438
> URL: https://issues.apache.org/jira/browse/LUCENE-10438
> Project: Lucene - Core
> Issue Type: Task
> Components: modules/facet
> Reporter: Adrien Grand
> Priority: Minor
>
> The facet module could leverage Weight#count in order to give fast counts for
> the browsing use-case?
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