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https://issues.apache.org/jira/browse/LUCENE-6926?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand resolved LUCENE-6926.
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       Resolution: Fixed
    Fix Version/s: Trunk
                   5.5

> 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
>             Fix For: 5.5, Trunk
>
>         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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