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https://issues.apache.org/jira/browse/LUCENE-8311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16881967#comment-16881967
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Adrien Grand commented on LUCENE-8311:
--------------------------------------

This made exact phrase queries 3x faster in the nightly benchmarks 
http://people.apache.org/~mikemccand/lucenebench/Phrase.html and term queries 
about 10% slower http://people.apache.org/~mikemccand/lucenebench/Term.html.

> Leverage impacts for phrase queries
> -----------------------------------
>
>                 Key: LUCENE-8311
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8311
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-8311.patch
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Now that we expose raw impacts, we could leverage them for phrase queries.
> For instance for exact phrases, we could take the minimum term frequency for 
> each unique norm value in order to get upper bounds of the score for the 
> phrase.



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