Hi, For Lucene 3.0.2, issue LUCENE-2421 ( https://issues.apache.org/jira/browse/LUCENE-2421) changed NativeFSLock.release to not raise an exception if a write.lock file could not be deleted since the presence of the file itself does not mean a lock is held.
Should NativeFSLockFactory.clearLock also be changed to not raise an exception if it can't delete the write.lock file? The comments in the clearLock method seem to suggest the method is really no longer necessary, but IndexWriter.init can still call it. If the write.lock is held from deletion by antivirus or something as described in LUCENE-2421, IndexWriter construction looks like it can fail unnecessarily for the same reason: IndexWriter IndexWriter.init Directory.clearLock NativeFSLockFactory.clearLock: ... if (lockFile.exists() && !lockFile.delete()){ throw new IOException("Cannot delete " + lockFile); } We have seen this exception path once in the wild (on a Windows box). I can work around this with a custom LockFactory but thought I should check if I'm reading the code right. Cheers, Ted -- Ted McFadden Chief Engineer Leximancer Pty Ltd Queensland, Australia http://www.leximancer.com