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https://issues.apache.org/jira/browse/LUCENE-10382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17481636#comment-17481636
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Adrien Grand commented on LUCENE-10382:
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+1 on figuring out a better execution path before the release, it's going to
look bad if setting a filter could make the query perform many times slower
than a linear scan.
I like the adaptive idea that would bound the overall cost at 2x the cost of a
linear scan.
> Allow KnnVectorQuery to operate over a subset of liveDocs
> ---------------------------------------------------------
>
> Key: LUCENE-10382
> URL: https://issues.apache.org/jira/browse/LUCENE-10382
> Project: Lucene - Core
> Issue Type: Improvement
> Affects Versions: 9.0
> Reporter: Joel Bernstein
> Priority: Major
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Currently the KnnVectorQuery selects the top K vectors from all live docs.
> This ticket will change the interface to make it possible for the top K
> vectors to be selected from a subset of the live docs.
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