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https://issues.apache.org/jira/browse/LUCENE-4848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13605038#comment-13605038
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Uwe Schindler commented on LUCENE-4848:
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bq. I think maybe that should go in as a separate patch since I think to make
it work properly you would have to make FSIndexInput.clone() open a new
FileChannel (essentially duplicating the file descriptor per-thread...that way
when the descriptor is closed due to an interrupt you only have to worry about
reopening that thread's FD, not all threads sharing the same FD).
We cannot do this, as Lucene *never* closes clones. This would be the grave for
file handles! Lucene would eat up all file handles in milliseconds :-)
> Add Directory implementations using NIO2 APIs
> ---------------------------------------------
>
> Key: LUCENE-4848
> URL: https://issues.apache.org/jira/browse/LUCENE-4848
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Michael Poindexter
> Assignee: Uwe Schindler
> Priority: Minor
> Attachments: jdk7directory.zip
>
>
> I have implemented 3 Directory subclasses using NIO2 API's (available on
> JDK7). These may be suitable for inclusion in a Lucene contrib module.
> See the mailing list at http://lucene.markmail.org/thread/lrv7miivzmjm3ml5
> for more details about this code and the advantages it provides.
> The code is attached as a zip to this issue. I'll be happy to make any
> changes requested. I've included some minimal smoke tests, but any help in
> how to use the normal Lucene tests to perform more thorough testing would be
> appreciated.
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