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https://issues.apache.org/jira/browse/LUCENE-10481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17538889#comment-17538889
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Michael McCandless commented on LUCENE-10481:
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I think the reason why it may sometimes need scores is if you ask it to
aggregate the relevance for each facet value, using "association facets", and
then pick top N by descending relevance. Maybe?
But yeah +1 to the change – we should not ask for scores if we won't use them :)
> FacetsCollector does not need scores when not keeping them
> ----------------------------------------------------------
>
> Key: LUCENE-10481
> URL: https://issues.apache.org/jira/browse/LUCENE-10481
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/facet
> Reporter: Mike Drob
> Assignee: Mike Drob
> Priority: Major
> Fix For: 8.11.2, 9.2
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> FacetsCollector currently always specifies ScoreMode.COMPLETE, we could get
> better performance by not requesting scores when we don't need them.
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