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From "Yi Liu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-10561) Copy command with preserve option should handle Xattrs
Date Tue, 03 Jun 2014 02:59:02 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-10561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Yi Liu updated HADOOP-10561:

    Attachment: HADOOP-10561.1.patch

Thanks @Charles Lamb for your comments. The new patch includes update for your comments.
The usage message is a little bit confusing. At first it was unclear to me that -ptopx was
really -p with options for t, o, p, and x. I would if we could make this a little clearer
by saying something like this instead?
public static final String USAGE = "\[-f\] \[-p | -p\[t|o|p|x\]\] <src> ... <dst>";
or maybe
public static final String USAGE = "\[-f\] \[-p | -p\[topx\]\] <src> ... <dst>";
OK, let's use the {{\[-f\] \[-p | -p\[topx\]\] <src> ... <dst>}}. For the detail,
user can get from {{hadoop fs -usage cp}}

+ "must be a directory. Passing -p preserves status\n" +
+ "(\[topx\]) (timestamps, ownership, permission, XATTR). \n" +
+ "If -p is specified with no <arg>, then preserves " +
+ "timestamps, ownership, permission. Passing -f\n" +

Also, s/XATTR/XAttr/.
Right, I change {{XATTR}} to {{xattr}}.

> Copy command with preserve option should handle Xattrs
> ------------------------------------------------------
>                 Key: HADOOP-10561
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10561
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 3.0.0
>            Reporter: Uma Maheswara Rao G
>            Assignee: Yi Liu
>         Attachments: HADOOP-10561.1.patch, HADOOP-10561.1.patch, HADOOP-10561.patch
> The design docs for Xattrs stated that we handle preserve options with copy commands
> From doc:
> Preserve option of commands like “cp -p” shell command and “distcp -p” should
work on XAttrs. 
> In the case of source fs supports XAttrs but target fs does not support, XAttrs will
be ignored 
> with warning message

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