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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6373) Remove support for extended attributes on symlinks
Date Tue, 13 May 2014 20:25:15 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13996856#comment-13996856
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Andrew Wang commented on HDFS-6373:
-----------------------------------

That stacktrace is probably just from how symlink resolution works. The client code catches
the UnresolvedLinkException, attempts to resolve it, then retries with the new path. Maybe
we should squish the trace since this is expected behavior.

> Remove support for extended attributes on symlinks
> --------------------------------------------------
>
>                 Key: HDFS-6373
>                 URL: https://issues.apache.org/jira/browse/HDFS-6373
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Andrew Wang
>            Assignee: Charles Lamb
>
> Looking in the Linux source code, we see the following:
> http://lxr.linux.no/linux+v3.14.3/fs/xattr.c
> {code}
>   60        /*
>   61         * In the user.* namespace, only regular files and directories can have
>   62         * extended attributes. For sticky directories, only the owner and
>   63         * privileged users can write attributes.
>   64         */
> {code}
> We should consider removing {{XAttrFeature}} from {{INodeSymlink}}.



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