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https://issues.apache.org/jira/browse/LUCENE-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shai Erera updated LUCENE-2104:
-------------------------------
Attachment: LUCENE-2104.patch
Changed NativeFSLock.release() to first obtain and then release the lock, if
it's not held. That way, if obtain fails, LockReleaseFailedException is thrown,
to indicate that.
> IndexWriter.unlock does does nothing if NativeFSLockFactory is used
> -------------------------------------------------------------------
>
> Key: LUCENE-2104
> URL: https://issues.apache.org/jira/browse/LUCENE-2104
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Shai Erera
> Fix For: 3.1
>
> Attachments: LUCENE-2104.patch, LUCENE-2104.patch
>
>
> If NativeFSLockFactory is used, IndexWriter.unlock will return, silently
> doing nothing. The reason is that NativeFSLockFactory's makeLock always
> creates a new NativeFSLock. NativeFSLock's release first checks if its lock
> is not null. However, only if obtain() is called, that lock is not null. So
> release actually does nothing, and so IndexWriter.unlock does not delete the
> lock, or fail w/ exception.
> This is only a problem in NativeFSLock, and not in other Lock
> implementations, at least as I was able to see.
> Need to think first how to reproduce in a test, and then fix it. I'll work on
> it.
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