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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-2686) DisjunctionSumScorer should not call .score on sub scorers until consumer calls .score
Date Mon, 23 Apr 2012 23:46:35 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13260085#comment-13260085
] 

Michael McCandless commented on LUCENE-2686:
--------------------------------------------

LiLi can you post the test case you created?

Mikhail, can you post a patch with your ShouldQuery?  I don't understand why you needed to
modify CSQ.score to break the infinite loop...
                
> DisjunctionSumScorer should not call .score on sub scorers until consumer calls .score
> --------------------------------------------------------------------------------------
>
>                 Key: LUCENE-2686
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2686
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: core/search
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 4.0
>
>         Attachments: LUCENE-2686.patch, LUCENE-2686.patch, Test2LUCENE2590.java
>
>
> Spinoff from java-user thread "question about Scorer.freq()" from Koji...
> BooleanScorer2 uses DisjunctionSumScorer to score only-SHOULD-clause boolean queries.
> But, this scorer does too much work for collectors that never call .score, because it
scores while it's matching.  It should only call .score on the subs when the caller calls
its .score.
> This also has the side effect of messing up advanced collectors that gather the freq()
of the subs (using LUCENE-2590).

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