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From "Pavel Belousov (Created) (JIRA)" <j...@apache.org>
Subject [Lucene.Net] [jira] [Created] (LUCENENET-457) Lucene locks directory with index after network related problems
Date Tue, 22 Nov 2011 05:50:40 GMT
Lucene locks directory with index after network related problems
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                 Key: LUCENENET-457
                 URL: https://issues.apache.org/jira/browse/LUCENENET-457
             Project: Lucene.Net
          Issue Type: Bug
          Components: Lucene.Net Core
         Environment: Windows Server 2008
            Reporter: Pavel Belousov


I have a directory for my index in shared folder on another computer in the network. My service
writes data to the index. Sometimes the service gets network related exceptions like "The
specified network name is no longer available.". After that the service cannot write anything
to index because of lock, even if I delete "write.lock" file manually.

I have done a research and have found that Lucene API has IndexWriter.Unlock() method, but
in my case is does not work.
I use NativeFSLockFactory class. Class NativeFSLock has private field LOCK_HELD with the list
of current locks, but in my case (after network related issues) it has record with the lock
(NativeFSLock uses it in Obtain() method) and I can't delete it through API. I suppose that
method NativeFSLock.Release()(which is called from IndexWriter.Unlock()) should delete record
from the field LOCK_HELD.

May be I'm wrong and there is an appoarch to handle such problems?

At the moment I have implemented the method which deletes the record from LOCK_HELD through
reflection.

Thanks a lot. 

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