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https://issues.apache.org/jira/browse/HDFS-4897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13679724#comment-13679724
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Jing Zhao commented on HDFS-4897:
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bq. Sorry, I made a mistake in the initial filing. hdfs dfs -mv will retain the
quotas settings, but not -cp.
Yeah, I should refresh the page before posting my last comment :)
bq. This still means that when we want to restore a subtree using snapshots, we
won't be able to retain quotas settings because we can't use move.
We can either extend the existing command (as suggested by Daryn and Aaron) or
we can provide a separate snapshot tool which can retain the quota setting when
restoring.
> Copying a directory does not include the directory's quota settings
> -------------------------------------------------------------------
>
> Key: HDFS-4897
> URL: https://issues.apache.org/jira/browse/HDFS-4897
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Stephen Chu
> Labels: quota
>
> [~atm] and I found that when a directory is copied, its quotas settings
> aren't included.
> {code}
> [04:21:33] atm@simon:~/src/apache/hadoop.git$ hadoop fs -ls /user
> Found 2 items
> drwxr-xr-x - atm atm 0 2013-06-07 16:17 /user/atm
> drwx------ - hdfs supergroup 0 2013-06-07 16:21 /user/hdfs
> [04:21:44] atm@simon:~/src/apache/hadoop.git$ hadoop fs -count -q /user/atm
> 100 91 none inf 7
> 2 3338 /user/atm
> [04:21:51] atm@simon:~/src/apache/hadoop.git$ sudo -u hdfs -E `which hadoop`
> fs -cp /user/atm /user/atm-copy
> [04:22:00] atm@simon:~/src/apache/hadoop.git$ hadoop fs -count -q
> /user/atm-copy
> none inf none inf 6
> 1 3338 /user/atm-copy
> {code}
> This also means that a user will not retain quotas settings when the user
> takes snapshots and restores a subtree using snapshots because we use copy
> (not allowed to move snapshots).
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