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https://issues.apache.org/jira/browse/LUCENE-1331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless resolved LUCENE-1331.
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Resolution: Fixed
> FSDirectory doesn't detect double-close nor usage after close
> -------------------------------------------------------------
>
> Key: LUCENE-1331
> URL: https://issues.apache.org/jira/browse/LUCENE-1331
> Project: Lucene - Java
> Issue Type: Bug
> Components: Store
> Affects Versions: 1.9, 2.0.0, 2.1, 2.2, 2.3, 2.3.1
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.4
>
> Attachments: LUCENE-1331.patch
>
>
> FSDirectory.close implements logic to ensure only a single instance of
> FSDirectory per canonical directory exists. This means code that
> synchronizes on the FSDirectory instance is also synchronized against that
> canonical directory. I think only IndexModifier (now deprecated) actually
> makes use of this, but I'm not certain.
> But, the close() method doesn't detect double close, and doesn't catch usage
> after being closed, and so one can easily get two instances of FSDirectory
> for the same canonical directory.
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