improve windows defaults in FSDirectory
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Key: LUCENE-2650
URL: https://issues.apache.org/jira/browse/LUCENE-2650
Project: Lucene - Java
Issue Type: Improvement
Components: Store
Affects Versions: 4.0
Reporter: Robert Muir
Assignee: Robert Muir
Fix For: 4.0
Currently windows defaults to SimpleFSDirectory, but this is a problem due to
the synchronization.
I have been benchmarking queries *sequentially* and was pretty surprised at how
much faster
MMapDirectory is, for example for cases that do many seeks.
I think we should change the defaults for windows as such:
if (WINDOWS and UNMAP_SUPPORTED and 64-bit)
use MMapDirectory
else
use SimpleFSDirectory
I think we should just consider doing this for 4.0 only and see how it goes.
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