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https://issues.apache.org/jira/browse/LUCENE-6944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15066707#comment-15066707
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ASF subversion and git services commented on LUCENE-6944:
---------------------------------------------------------
Commit 1721215 from [~jpountz] in branch 'dev/trunk'
[ https://svn.apache.org/r1721215 ]
LUCENE-6944: Prevent BooleanWeight from creating sub bulk-scorers to only trash
them later.
> 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
> 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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