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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2771) Remove norms() support from non-atomic IndexReaders
Date Tue, 04 Jan 2011 17:02:46 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12977345#action_12977345
] 

Michael McCandless commented on LUCENE-2771:
--------------------------------------------

This looks great!  Any reason not to commit now?

> Remove norms() support from non-atomic IndexReaders
> ---------------------------------------------------
>
>                 Key: LUCENE-2771
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2771
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Uwe Schindler
>             Fix For: 4.0
>
>         Attachments: LUCENE-2771.patch, LUCENE-2771.patch, LUCENE-2771.patch, LUCENE-2771_needsCache.patch
>
>
> Spin-off from LUCENE-2769:
> Currently all IndexReaders support norms(), but the core of Lucene never uses it and
its even dangerous because of memory usage. We should do the same like with MultiFields and
factor it out and throw UOE on non-atomic readers.
> The SlowMultiReaderWrapper can then manage the norms. Also ParallelReader needs to be
fixed.

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