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https://issues.apache.org/jira/browse/LUCENE-6944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15089387#comment-15089387
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Michael McCandless commented on LUCENE-6944:
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[~jpountz] can this be resolved now?
> 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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