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Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2010/11/19 21:08:14 UTC
[jira] Updated: (LUCENE-2771) Remove norms() support from
non-atomic IndexReaders
[ https://issues.apache.org/jira/browse/LUCENE-2771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir updated LUCENE-2771:
--------------------------------
Attachment: LUCENE-2771_needsCache.patch
here is a start to the new approach i described.
it needs some cleanup and optimization, but mostly just to add a cache to ParallelReader
like i did to SlowMultiReaderWrapper...
all tests pass, this is much simpler.
> 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_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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