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https://issues.apache.org/jira/browse/HADOOP-4014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12637589#action_12637589
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Tsz Wo (Nicholas), SZE commented on HADOOP-4014:
------------------------------------------------

How about rename OSType.OS_TYPE_WINXP to OSType.OS_TYPE_WINDOWS since it 
represents not only WinXP but also Win2003 and Vista?

Otherwise, the patch looks good.

> DFS upgrade fails on Windows
> ----------------------------
>
>                 Key: HADOOP-4014
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4014
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.18.0
>         Environment: Windows XP, Windows 2003 Server
>            Reporter: NOMURA Yoshihide
>            Assignee: Konstantin Shvachko
>            Priority: Blocker
>             Fix For: 0.19.0
>
>         Attachments: HADOOP-4014.patch, HardLinkWin.patch, HardLinkWin.patch
>
>
> FileUtil.HardLink#createHardLink() didn't work on Windows, and DFS upgrade of 
> Datanode fails.
> The windows command 'fsutil' requires the arguments link name first as 
> follows,
> > fsutil hardlink create <link name> <target>
> But the current FileUtil passes the target first.

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