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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, 25 Nov 2008 23:49:44 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12650800#action_12650800
] 

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

I think this bug should be called it in changes. Disagree? I've seen 2 to 3 people that have
seen it, and it seems we should document that its fixed in this version. I'll add it before
the next release if nobody disagrees.

> 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
>             Fix For: 2.9
>
>         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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