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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (LUCENE-1656) When sorting by field, IndexSearcher should not compute scores by default
Date Tue, 02 Jun 2009 19:19:07 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless resolved LUCENE-1656.
----------------------------------------

    Resolution: Fixed

> When sorting by field, IndexSearcher should not compute scores by default
> -------------------------------------------------------------------------
>
>                 Key: LUCENE-1656
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1656
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1656.patch
>
>
> In 2.9 we've added the ability to turn off scoring (maxScore &
> trackScores, separately) when sorting by field.
> I expect most apps don't use the scores when sorting by field, and
> there's a sizable performance gain when scoring is off, so I think for
> 2.9 we should not score by default, and add show in CHANGES how to
> enable scoring if you rely on it.
> If there are no objections, I'll commit that change in a day or two
> (it's trivial).

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