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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4923) remove minShouldMatch/speed up DisjunctionSumScorer
Date Wed, 10 Apr 2013 14:16:16 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13627826#comment-13627826
] 

Michael McCandless commented on LUCENE-4923:
--------------------------------------------

+1
                
> remove minShouldMatch/speed up DisjunctionSumScorer
> ---------------------------------------------------
>
>                 Key: LUCENE-4923
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4923
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/query/scoring
>    Affects Versions: 4.3
>            Reporter: Robert Muir
>         Attachments: LUCENE-4923.patch
>
>
> LUCENE-4571 added a MinShouldMatchScorer: capable of using advance() on subscorers for
minShouldMatch > 1. 
> However, we didn't yet cleanup the (now dead) minShouldMatch logic from DisjunctionSumScorer:
which is now only used for pure disjunctions. This can also give some reasonable performance
improvements for in-order collection.

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