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Posted to dev@lucene.apache.org by "Uwe Schindler (JIRA)" <ji...@apache.org> on 2009/09/04 00:18:57 UTC
[jira] Resolved: (LUCENE-1877) Use NativeFSLockFactory as default
for new API (direct ctors & FSDir.open)
[ https://issues.apache.org/jira/browse/LUCENE-1877?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Uwe Schindler resolved LUCENE-1877.
-----------------------------------
Resolution: Fixed
Committed revision: 811157
> Use NativeFSLockFactory as default for new API (direct ctors & FSDir.open)
> --------------------------------------------------------------------------
>
> Key: LUCENE-1877
> URL: https://issues.apache.org/jira/browse/LUCENE-1877
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Javadocs
> Reporter: Mark Miller
> Assignee: Uwe Schindler
> Fix For: 2.9
>
> Attachments: LUCENE-1877.patch, LUCENE-1877.patch, LUCENE-1877.patch, LUCENE-1877.patch
>
>
> A user requested we add a note in IndexWriter alerting the availability of NativeFSLockFactory (allowing you to avoid retaining locks on abnormal jvm exit). Seems reasonable to me - we want users to be able to easily stumble upon this class. The below code looks like a good spot to add a note - could also improve whats there a bit - opening an IndexWriter does not necessarily create a lock file - that would depend on the LockFactory used.
> {code} <p>Opening an <code>IndexWriter</code> creates a lock file for the directory in use. Trying to open
> another <code>IndexWriter</code> on the same directory will lead to a
> {@link LockObtainFailedException}. The {@link LockObtainFailedException}
> is also thrown if an IndexReader on the same directory is used to delete documents
> from the index.</p>{code}
> Anyone remember why NativeFSLockFactory is not the default over SimpleFSLockFactory?
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