[
https://issues.apache.org/jira/browse/HDFS-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yi Liu updated HDFS-2006:
-------------------------
Attachment: HDFS-XAttrs-Design-2.pdf
The design doc is updated. Change list is as following:
• Clarify #hasXAttrs.
• Clarify XAttr with large value.
• Add more details on the memory calculation.
• Update FileSystem APIs.
• Add maximum limit for XAttrs number per inode.
• Add statement of not support getting and setting XAttrs via NFS mount.
• XAttr support for libHDFS, WebHDFS/HttpFS will be added later.
> 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: HDFS-XAttrs-Design-1.pdf, HDFS-XAttrs-Design-2.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.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
