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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1314) IndexReader.clone
Date Mon, 09 Feb 2009 20:08:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12671991#action_12671991
] 

Michael McCandless commented on LUCENE-1314:
--------------------------------------------

If the SegmentReader is not standalone (does not "own" a SegmentInfos,
and is therefore a sub-reader in a MultiSegmentReader), I think you
should not make changes (setNorm, deleteDocument) with it?

Ie, you should always use the "parent" MultiSegmentReader to make
changes.

I'll update the javadocs for getSequentialSubReaders to state this.



> IndexReader.clone
> -----------------
>
>                 Key: LUCENE-1314
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1314
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Index
>    Affects Versions: 2.3.1
>            Reporter: Jason Rutherglen
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch,
LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch,
LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch,
LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch,
LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, lucene-1314.patch, lucene-1314.patch,
lucene-1314.patch, lucene-1314.patch, lucene-1314.patch, lucene-1314.patch, lucene-1314.patch,
lucene-1314.patch, lucene-1314.patch, lucene-1314.patch, lucene-1314.patch, lucene-1314.patch
>
>
> Based on discussion http://www.nabble.com/IndexReader.reopen-issue-td18070256.html. 
The problem is reopen returns the same reader if there are no changes, so if docs are deleted
from the new reader, they are also reflected in the previous reader which is not always desired
behavior.

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