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List:       lucene-dev
Subject:    [jira] [Commented] (LUCENE-6940) Bulk scoring could speed up MUST_NOT clauses
From:       "ASF subversion and git services (JIRA)" <jira () apache ! org>
Date:       2015-12-31 14:24:49
Message-ID: JIRA.12922998.1450436147000.34076.1451571889636 () Atlassian ! JIRA
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    [ https://issues.apache.org/jira/browse/LUCENE-6940?page=com.atlassian.jira.plugin \
.system.issuetabpanels:comment-tabpanel&focusedCommentId=15075964#comment-15075964 ] 

ASF subversion and git services commented on LUCENE-6940:
---------------------------------------------------------

Commit 1722445 from [~jpountz] in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1722445 ]

LUCENE-6940: Speed up MUST_NOT clauses.

> Bulk scoring could speed up MUST_NOT clauses
> --------------------------------------------
> 
> Key: LUCENE-6940
> URL: https://issues.apache.org/jira/browse/LUCENE-6940
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-6940.patch, LUCENE-6940.patch
> 
> 
> Today when you have MUST_NOT clauses, the ReqExclScorer is used and needs to check \
> the excluded clauses on every iteration. I suspect we could speed things up by \
> having a BulkScorer that would advance the excluded clause first and then tell the \
> required clause to bulk score up to the next excluded document.



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