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Stephen Chu updated HDFS-6620: ------------------------------ Attachment: HDFS-6620.001.patch Attaching a patch that * changes the cp snapshot doc example to use the -ptopax option. I added a note that the example shows how to preserve timestamp, ownership, permissions, acls, and xattrs. * Added an additional XAttr + Snapshot unit test to verify that users can copy a snapshot file and preserve its attributes. > Snapshot docs should specify about preserve options with cp command > ------------------------------------------------------------------- > > Key: HDFS-6620 > URL: https://issues.apache.org/jira/browse/HDFS-6620 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Affects Versions: 3.0.0, 2.5.0 > Reporter: Uma Maheswara Rao G > Assignee: Stephen Chu > Attachments: HDFS-6620.001.patch > > > Currently snapshot docs contains the cp command details for copying the > snapshot files to regular dfs tree. > http://hadoop.apache.org/docs/r2.3.0/hadoop-project-dist/hadoop-hdfs/HdfsSnapshots.html#Snapshot_Paths > Copying a file from snapshot s0: > hdfs dfs -cp /foo/.snapshot/s0/bar /tmp > Since there are important properties(acls, xattrs..etc) for a file may need > to copy back. But looking at this doc may mislead to copy with out using any > options. So, It may be worth mentioning aboit that properties. Infact it > should copy all properties by default from snapshot file. -- This message was sent by Atlassian JIRA (v6.2#6252)