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From: "Yi Liu (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HADOOP-10561) Copy command with preserve option
 should handle Xattrs
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     [ https://issues.apache.org/jira/browse/HADOOP-10561?page=3Dcom.atlass=
ian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yi Liu updated HADOOP-10561:
----------------------------

    Attachment: HADOOP-10561.1.patch
                HADOOP-10561.1.patch

Thanks @Charles Lamb for your comments. The new patch includes update for y=
our comments.
{quote}
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 co=
uld make this a little clearer by saying something like this instead?
public static final String USAGE =3D "\[-f\] \[-p | -p\[t|o|p|x\]\] <src> .=
.. <dst>";
or maybe
public static final String USAGE =3D "\[-f\] \[-p | -p\[topx\]\] <src> ... =
<dst>";
{quote}
OK, let's use the {{\[-f\] \[-p | -p\[topx\]\] <src> ... <dst>}}. For the d=
etail, user can get from {{hadoop fs -usage cp}}

{quote}
+ "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/.
{quote}
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-1=
0561.patch
>
>
> The design docs for Xattrs stated that we handle preserve options with co=
py commands
> From doc:
> Preserve option of commands like =E2=80=9Ccp -p=E2=80=9D shell command an=
d =E2=80=9Cdistcp -p=E2=80=9D should work on XAttrs.=20
> In the case of source fs supports XAttrs but target fs does not support, =
XAttrs will be ignored=20
> with warning message



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