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https://issues.apache.org/jira/browse/LUCENE-6944?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand resolved LUCENE-6944.
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    Resolution: Fixed

Yep, that's fixed!

> BooleanWeight.bulkScorer should not build any sub bulk scorer if there are 
> required/prohibited clauses
> ------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-6944
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6944
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>             Fix For: 5.5, Trunk
>
>         Attachments: LUCENE-6944.patch
>
>
> BooleanWeight.bulkScorer creates a sub bulk scorer for all clauses until it 
> meets a clause that is not optional (the only kind of clause it can deal 
> with). However the Weight.bulkScorer method is sometimes costly, so 
> BooleanWeight.bulkScorer should first inspect all clauses to see if any of 
> them is not optional to avoid creating costly bulk scorers to only trash them 
> later.



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