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https://issues.apache.org/jira/browse/LUCENE-7051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15171692#comment-15171692
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Adrien Grand commented on LUCENE-7051:
--------------------------------------
I'll watch http://home.apache.org/~mikemccand/lucenebench/IntNRQ.html in the
coming days to make sure the nightly benchmarks agree this optimization was not
necessary.
> Remove the "estimate match count" optimization from point queries
> -----------------------------------------------------------------
>
> Key: LUCENE-7051
> URL: https://issues.apache.org/jira/browse/LUCENE-7051
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Fix For: 6.0
>
> Attachments: LUCENE-7051.patch
>
>
> Point queries try to estimate the number of matches in the visitor so that
> the doc id set that they build does not have to do it by itself. However,
> this is incorrect in the multi-valued case and does not seem to buy much (if
> any) in terms of performance?
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