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https://issues.apache.org/jira/browse/LUCENE-10438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17497394#comment-17497394
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Adrien Grand commented on LUCENE-10438:
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Solr indeed has a version of faceting that does this. I haven't looked at the
details for a long time, but I remember that it would run facets on
low-cardinality fields by intersecting postings with the bitset produced by the
query.
> 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
> Assignee: Greg Miller
> Priority: Minor
>
> The facet module could leverage Weight#count in order to give fast counts for
> the browsing use-case?
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