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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (JCR-3469) Thread interrupt may result in closed index files
Date Thu, 29 Nov 2012 08:52:59 GMT

    [ https://issues.apache.org/jira/browse/JCR-3469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506329#comment-13506329
] 

Marcel Reutegger commented on JCR-3469:
---------------------------------------

I considered extending from an abstract test class as well, but then noticed
that I'd have to change the test repository.xml as well to use the SimpleFSDirectory
for the version storage index. I decided to keep the existing test configuration
as is because the automatic FSDirectory resolution is still the default.

                
> Thread interrupt may result in closed index files
> -------------------------------------------------
>
>                 Key: JCR-3469
>                 URL: https://issues.apache.org/jira/browse/JCR-3469
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core
>    Affects Versions: 2.4
>            Reporter: Marcel Reutegger
>            Priority: Minor
>         Attachments: JCR-3469.patch, JCR-3469.patch, JCR-3469-test.patch
>
>
> Interrupting a thread, which is currently performing I/O on Lucene index files, may result
in closed index files. Jackrabbit versions prior to 2.4 didn't have that problem because only
with the update of Lucene to 3.0.3 in Jackrabbit 2.4 the underlying default for the FSDirectory
in Lucene changed from SimpleFSDirectory to NIOFSDirectory. The latter uses a FileChannel
to perform concurrent read operations on a single channel, but because of the way how FileChannel
is specified an interrupt will result in the FileChannel to be closed.
> This was also discussed on the Lucene mailing list. See: http://lucene.markmail.org/thread/ea7mj2kpdvyuesss

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