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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (LUCENE-4923) remove minShouldMatch/speed up DisjunctionSumScorer
Date Sun, 21 Apr 2013 11:47:15 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-4923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless resolved LUCENE-4923.
----------------------------------------

       Resolution: Fixed
    Fix Version/s: 4.3
                   5.0

I think Rob committed this to 4.3/5.x?  No message from commit bot ... I think this was when
it was sleeping.
                
> 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
>             Fix For: 5.0, 4.3
>
>         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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