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Date: Wed, 26 Oct 2011 23:33:33 +0000 (UTC)
From: "Todd Lipcon (Updated) (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (HADOOP-7753) Support fadvise and sync_data_range
 in NativeIO, add ReadaheadPool class
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     [ https://issues.apache.org/jira/browse/HADOOP-7753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon updated HADOOP-7753:
--------------------------------

    Attachment: hadoop-7753.txt

slight improvement to test cases so that, if you run tests on a platform without these calls, it will just skip the test instead of failing the test. I ran tests and they passed. Thanks for the reviews, Nathan. I think Eli was also taking a look at this, so I'll wait on his cue to commit.
                
> Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-7753
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7753
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: io, native
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hadoop-7753.txt, hadoop-7753.txt, hadoop-7753.txt, hadoop-7753.txt
>
>
> This JIRA adds JNI wrappers for sync_data_range and posix_fadvise. It also implements a ReadaheadPool class for future use from HDFS and MapReduce.

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