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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2006) ability to support storing extended attributes per file
Date Fri, 16 May 2014 11:20:09 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13999708#comment-13999708

Uma Maheswara Rao G commented on HDFS-2006:

-1 core tests. The patch failed these unit tests in hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs:
This failure is expected as editsStored binary file can not be included in patch. On committing
that binary file along with edirsStored binary file this test will pass.

So, all *checks passed with merge patch*.

I will generate another merge patch today with latest checkins in the branch.

> ability to support storing extended attributes per file
> -------------------------------------------------------
>                 Key: HDFS-2006
>                 URL: https://issues.apache.org/jira/browse/HDFS-2006
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: HDFS XAttrs (HDFS-2006)
>            Reporter: dhruba borthakur
>            Assignee: Yi Liu
>         Attachments: ExtendedAttributes.html, HDFS-2006-Merge-1.patch, HDFS-XAttrs-Design-1.pdf,
HDFS-XAttrs-Design-2.pdf, HDFS-XAttrs-Design-3.pdf, Test-Plan-for-Extended-Attributes-1.pdf,
xattrs.1.patch, xattrs.patch
> It would be nice if HDFS provides a feature to store extended attributes for files, similar
to the one described here: http://en.wikipedia.org/wiki/Extended_file_attributes. 
> The challenge is that it has to be done in such a way that a site not using this feature
does not waste precious memory resources in the namenode.

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