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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-6260) Simplify ExactPhraseScorer
Date Thu, 19 Feb 2015 18:22:12 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-6260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14327839#comment-14327839
] 

Robert Muir commented on LUCENE-6260:
-------------------------------------

+1

> Simplify ExactPhraseScorer
> --------------------------
>
>                 Key: LUCENE-6260
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6260
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-6260.patch
>
>
> ExactPhraseScorer tries to intersect positions using windows of 4096 documents. In LUCENE-2410
it was reported that it helped a lot but I tried again on wikibig with a simpler impl that
does advance one position at a time and the performance difference was only of a few percents.
I'm guessing that maybe other changes (eg. the new postings format?) do not make this behaviour
as useful as it used to be?



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