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https://issues.apache.org/jira/browse/LUCENE-1658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12714848#action_12714848
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Michael McCandless commented on LUCENE-1658:
--------------------------------------------
Ugh, I'm sorry... I had run the tests only on OS X, Java 1.5, which is
not 64 bit by default (must specify -d64) -- I should have tested the
different OS's and JREs before committing.
Thanks for jumping on this, Uwe and Earwin!
bq. 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
But: the removal of the cache is not back-compatible? (I'm not sure
how/whether anyone relies on that behavior). And, we are wanting to
move away from that global System property in choosing the class for
your FSDir. This is why I switched to open instead of back to
getDirectory.
bq. Caching of FSDirs was completely removed
I think this must wait until 3.0, ie when we remove all getDirectory
methods.
bq. FSDir.IndexInput/Output (deprected) was removed (suplicate code) and simply
replaced by (deprecated) subclasses of SimpleFSDir ones). This is OK for
backwards compatibility.
Excellent!
> 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-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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