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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7834) Support posix_fallocate in NativeIO and add call from DataNode code
Date Sun, 20 May 2012 03:50:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13279656#comment-13279656
] 

Todd Lipcon commented on HADOOP-7834:
-------------------------------------

Would be interesting to see if this improves MR code, too, if we were to hook it into intermediate
file spills. We generally have a pretty good estimate of the size of the intermediate files
before we begin writing them. 
                
> Support posix_fallocate in NativeIO and add call from DataNode code
> -------------------------------------------------------------------
>
>                 Key: HADOOP-7834
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7834
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: io, native, performance
>            Reporter: Sriram Rao
>


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