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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)