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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (LUCENE-2769) FilterIndexReader in trunk does not implement getSequentialSubReaders() correctly
Date Fri, 19 Nov 2010 18:52:13 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uwe Schindler resolved LUCENE-2769.
-----------------------------------

       Resolution: Fixed
    Lucene Fields: [New, Patch Available]  (was: [New])

Committed basic patch revision: 1036977

> FilterIndexReader in trunk does not implement getSequentialSubReaders() correctly
> ---------------------------------------------------------------------------------
>
>                 Key: LUCENE-2769
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2769
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 4.0
>            Reporter: Uwe Schindler
>         Attachments: LUCENE-2769.patch, LUCENE-2769.patch, LUCENE-2769_norms.patch, LUCENE-2769_norms.patch,
LUCENE-2769_norms.patch
>
>
> Since LUCENE-2459, getSequentialSubReaders() in FilterIndexReader returns null, so it
returns an atomic reader. But If you call then any of the enum methods, it throws Exception
because the underlying reader is not atomic.
> We should move the null-returning method to SlowMultiReaderWrapper and fix FilterIndexReader's
default to return in.getSequentialSubReaders(). Ideally an implementation must of course also
wrap the sub-readers.
> If we change this we have to look into other Impls like the MultiPassIndexSplitter if
we need to add atomicity.

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