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From "Varun Thacker (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3178) Native MMapDir
Date Thu, 01 Sep 2011 15:42:09 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095356#comment-13095356
] 

Varun Thacker commented on LUCENE-3178:
---------------------------------------

Just realized what was wrong. I was using the javadocs from version 3.3 on not from the trunk.
Stupid mistake on my part. Sorry to bring that up.

> Native MMapDir
> --------------
>
>                 Key: LUCENE-3178
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3178
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/store
>            Reporter: Michael McCandless
>
> Spinoff from LUCENE-2793.
> Just like we will create native Dir impl (UnixDirectory) to pass the right OS level IO
flags depending on the IOContext, we could in theory do something similar with MMapDir.
> The problem is MMap is apparently quite hairy... and to pass the flags the native code
would need to invoke mmap (I think?), unlike UnixDir where the code "only" has to open the
file handle.

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