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https://issues.apache.org/jira/browse/LUCENE-7939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand resolved LUCENE-7939.
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Resolution: Fixed
Thanks for having a look!
> Speed up MinShouldMatchSumScorer in conjunctions
> ------------------------------------------------
>
> Key: LUCENE-7939
> URL: https://issues.apache.org/jira/browse/LUCENE-7939
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: master (8.0), 7.1
>
> Attachments: LUCENE-7939.patch, LUCENE-7939.patch
>
>
> MinShouldMatchSumScorer has good iteration capabilities, but if it is not
> used as a lead for the iteration then the advance() call might make a lot of
> efforts in order to find the next match while we should instead let the lead
> iterator of the conjunction skip over non-matching documents. In this issue
> I'd like to explore changing MinShouldMatchSumScorer by giving it a two-phase
> iterator and making advance() return a candidate for the next match that is
> less good but much cheaper to compute.
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