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https://issues.apache.org/jira/browse/LUCENE-10498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17516917#comment-17516917
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ASF subversion and git services commented on LUCENE-10498:
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Commit 0a525ce2aba572855ce045e77f3a8c9acac5a199 in lucene's branch
refs/heads/main from Luca Cavanna
[ https://gitbox.apache.org/repos/asf?p=lucene.git;h=0a525ce2aba ]
LUCENE-10498: don't count num hits nor accumulate scores unless necessary (#782)
This commit introduces a no-op implementation of HitsThresholdChecker that does
no counting, to be used when early termination is disabled. This is
automatically used when creating a TopFieldCollector or a TopScoreDocCollector.
In that same scenario MaxScoreAccumulator can be null and scores are no longer
accumulated when creating a shared collector manager.
With this, it is safe to replace the custom collector managers in DrillSideways
with the ones returned by calling createSharedManager.
> Optimize TopField and TopScoreDoc collector by only counting hits when
> necessary
> --------------------------------------------------------------------------------
>
> Key: LUCENE-10498
> URL: https://issues.apache.org/jira/browse/LUCENE-10498
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Luca Cavanna
> Priority: Minor
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The current implementations of TopFieldCollector and TopScoreDocCollector
> count the number of hits as part of their HitsThresholdChecker impl. When
> early termination is disabled, meaning when total hits is Integer.MAX_VALUE,
> counting as well as accumulating scores in MaxScoreAccumulator is not
> necessary.
> We could optimize these two collector by disabling the counting as well as
> scores accumulation when early termination is not possible.
> This is a spin-off of LUCENE-10486.
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