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https://issues.apache.org/jira/browse/LUCENE-1658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-1658:
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Attachment: LUCENE-1658-take2.patch
This is a revised patch (on current trunk):
- FSDir.open() was removed, the logic was included into FSDir.getDirectory and
this un-deprectated: If the system property is missing, the same like in Mikes
open() happens: choosing the best impl for platform
- Caching of FSDirs was completely removed
- FSDir.IndexInput/Output (deprected) was removed (suplicate code) and simply
replaced by (deprecated) subclasses of SimpleFSDir ones). This is OK for
backwards compatibility.
Some tests currently fail:
- TestCompoundFile (do not know why)
- TestLockFactory (test is obsolete, execption can only occur on cached dirs)
- Sometimes reopen does not work because already closed (see LUCENE-1453)
TODO:
- Remove the caching code completely (currently comented out)
- Fix 1453, because if somebody uses a self-instantiated FSDir and not the
default, the reopened dir would use the default again! So fix (maybe clone of
FSDir, or LUCENE-1453 is obsolete without caching?).
This patch also contains an overflow fix in MMapDir for files <2 GB but large.
"int*int" should be written as "(long)int*int", if the result maybe large
(thanks Earwin!).
> Absorb NIOFSDirectory into FSDirectory
> --------------------------------------
>
> Key: LUCENE-1658
> URL: https://issues.apache.org/jira/browse/LUCENE-1658
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Store
> Reporter: Michael McCandless
> Assignee: Uwe Schindler
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1658-take2.patch, LUCENE-1658.patch,
> LUCENE-1658.patch, LUCENE-1658.patch
>
>
> I think whether one uses java.io.* vs java.nio.* or eventually
> java.nio2.*, or some other means, is an under-the-hood implementation
> detail of FSDirectory and doesn't merit a whole separate class.
> I think FSDirectory should be the core class one uses when one's index
> is in the filesystem.
> So, I'd like to deprecate NIOFSDirectory, absorbing it into
> FSDirectory, and add a setting "useNIO" to FSDirectory. It should
> default to "true" for non-Windows OSs, because it gives far better
> concurrent performance on all platforms but Windows (due to known Sun
> JRE issue http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6265734).
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