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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2013/04/21 13:47:15 UTC

[jira] [Resolved] (LUCENE-4923) remove minShouldMatch/speed up DisjunctionSumScorer

     [ 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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