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https://issues.apache.org/jira/browse/LUCENE-2795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13067105#comment-13067105
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Michael McCandless commented on LUCENE-2795:
--------------------------------------------
Also, we should run some more tests here, on modern kernels, since the
SEQUENTIAL fadvise flag is better implemented in kernels >= 2.6.29; see this
comment:
http://blog.mikemccandless.com/2010/06/lucene-and-fadvisemadvise.html?showComment=1303235497682#c2572106601600642254
It could be, if kernel is new enough, we should not do DIRECT and instead do
SEQUENTIAL.
> Genericize DirectIOLinuxDir -> UnixDir
> --------------------------------------
>
> Key: LUCENE-2795
> URL: https://issues.apache.org/jira/browse/LUCENE-2795
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/store
> Reporter: Michael McCandless
> Assignee: Varun Thacker
> Labels: gsoc2011, lucene-gsoc-11, mentor
> Attachments: LUCENE-2795.patch, LUCENE-2795.patch, LUCENE-2795.patch,
> LUCENE-2795.patch, LUCENE-2795.patch
>
>
> Today DirectIOLinuxDir is tricky/dangerous to use, because you only want to
> use it for indexWriter and not IndexReader (searching). It's a trap.
> But, once we do LUCENE-2793, we can make it fully general purpose because
> then a single native Dir impl can be used.
> I'd also like to make it generic to other Unices, if we can, so that it
> becomes UnixDirectory.
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