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https://issues.apache.org/jira/browse/LUCENE-6926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15062035#comment-15062035
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ASF subversion and git services commented on LUCENE-6926:
---------------------------------------------------------

Commit 1720548 from [~jpountz] in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1720548 ]

LUCENE-6926: Take the match cost into account for MUST_NOT clauses.

> Take matchCost into account for MUST_NOT clauses
> ------------------------------------------------
>
>                 Key: LUCENE-6926
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6926
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-6926.patch, LUCENE-6926.patch
>
>
> ReqExclScorer potentially has two TwoPhaseIterators to check: the one for the 
> positive clause and the one for the negative clause. It should leverage the 
> match cost API to check the least costly one first.



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