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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1453) When reopen returns a new IndexReader, both IndexReaders may now control the lifecycle of the underlying Directory which is managed by reference counting
Date Tue, 18 Nov 2008 03:21:44 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648472#action_12648472
] 

Mark Miller commented on LUCENE-1453:
-------------------------------------

Okay, I've banged on it and I can't break it. Thats a brilliant way to do it by the way -
not nearly as ugly (and is much shorter and actually works, so thats nice).

> When reopen returns a new IndexReader, both IndexReaders may now control the lifecycle
of the underlying Directory which is managed by reference counting
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-1453
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1453
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 2.4
>            Reporter: Mark Miller
>            Assignee: Michael McCandless
>            Priority: Minor
>         Attachments: LUCENE-1453.patch, LUCENE-1453.patch, LUCENE-1453.patch
>
>
> Rough summary. Basically, FSDirectory tracks references to FSDirectory and when IndexReader.reopen
shares a Directory with a created IndexReader and closeDirectory is true, FSDirectory's ref
management will see two decrements for one increment. You can end up getting an AlreadyClosed
exception on the Directory when the IndexReader is open.
> I have a test I'll put up. A solution seems fairly straightforward (at least in what
needs to be accomplished).

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