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From "Brandon Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7753) Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class
Date Wed, 11 Jul 2012 20:01:35 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13411909#comment-13411909
] 

Brandon Li commented on HADOOP-7753:
------------------------------------

Let me try to replace the used guava code to removed the guava library dependency. 
btw, which jar pulled by webhdfs into Hadoop 1.x caused problems? we should try to fix that
too.
                
> 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, performance
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.23.0
>
>         Attachments: HADOOP-7753.branch-1.patch, hadoop-7753.txt, 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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