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https://issues.apache.org/jira/browse/LUCENE-1771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12739298#action_12739298
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Yonik Seeley commented on LUCENE-1771:
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bq. I'm confused... why is that a bug?
Because it's maxDoc() not numDocs() that's used in the idf calculation... so if
you tried to duplicate the idf calculation given the explain factors, it
wouldn't match up for terms with deleted docs.
> Using explain may double ram reqs for fieldcaches when using
> ValueSourceQuery/CustomScoreQuery or for ConstantScoreQuerys that use a
> caching Filter.
> ----------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-1771
> URL: https://issues.apache.org/jira/browse/LUCENE-1771
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Reporter: Mark Miller
> Assignee: Mark Miller
> Fix For: 2.9
>
> Attachments: LUCENE-1771.patch, LUCENE-1771.patch, LUCENE-1771.patch,
> LUCENE-1771.patch
>
>
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