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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10919) Copy command should preserve raw.* namespace extended attributes
Date Thu, 14 Aug 2014 01:46:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14096420#comment-14096420
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Andrew Wang commented on HADOOP-10919:
--------------------------------------

Note that if you copy from at or above the EZ root, it'll preserve the EZ root's raw xattrs
and thus create the EZ. We have a special hook in FSDirectory#unprotectedSetXAttrs that watches
for the special EZ xattr being set. If you're copying from below the EZ root, then only that
subtree is preserved. We don't automatically create an EZ above the distcp dst (which would
be kind of weird behavior).

> Copy command should preserve raw.* namespace extended attributes
> ----------------------------------------------------------------
>
>                 Key: HADOOP-10919
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10919
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 3.0.0
>            Reporter: Charles Lamb
>            Assignee: Charles Lamb
>             Fix For: fs-encryption (HADOOP-10150 and HDFS-6134)
>
>         Attachments: HADOOP-10919.001.patch, HADOOP-10919.002.patch
>
>
> Refer to the doc attached to HDFS-6509 for background.
> Like distcp -p (see MAPREDUCE-6007), the copy command also needs to preserve extended
attributes in the raw.* namespace by default whenever the src and target are in /.reserved/raw.
To not preserve raw xattrs, don't specify /.reserved/raw in either the src or target. 



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