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From "Robert Muir (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3555) Add support for distributed stats
Date Wed, 02 Nov 2011 21:13:33 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir updated LUCENE-3555:
--------------------------------

    Attachment: LUCENE-3555.patch

Attached is a patch. This is also nice since it removes the "SpoofIndexSearcher" the sim tests
were using to simulate fake stats.
                
> Add support for distributed stats
> ---------------------------------
>
>                 Key: LUCENE-3555
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3555
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 4.0
>            Reporter: Robert Muir
>            Assignee: Robert Muir
>         Attachments: LUCENE-3555.patch
>
>
> (its a bug in a way, since we broke this, temporarily).
> There is no way to do this now (distributed IDF, etc) with the new API.
> But we should do it right:
> * having the sim ask the searcher for docfreq of a term is wasteful and dangerous, 
>   usually we have already seek'd to the term and already collected the 'raw' stuff.
> * the situation is more than just docfreq, because you should be able to implement
>   distributed scoring for all of the new sim models (or your own), that use any
>   of Lucene's stats.

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