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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4148) disallow modification on RO snapshots
Date Mon, 12 Nov 2012 18:41:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13495487#comment-13495487
] 

Aaron T. Myers commented on HDFS-4148:
--------------------------------------

I'm not sure I agree with throwing a SnapshotException in all these cases. I think it makes
sense to just throw a normal AccessControlException when an attempt is made to make modifications
to an RO snapshot, much as an attempt to modify an RO snapshot in WAFL or ZFS just results
in EACCESS.

Thoughts?
                
>  disallow modification on RO snapshots
> --------------------------------------
>
>                 Key: HDFS-4148
>                 URL: https://issues.apache.org/jira/browse/HDFS-4148
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: Snapshot (HDFS-2802)
>            Reporter: Brandon Li
>            Assignee: Brandon Li
>         Attachments: HDFS-4148.patch, HDFS-4148.patch
>
>
> disallow modification on RO snapshots, including create, append, setReplication/Permission/Owner,
rename, delete, makedir, setQuota/Time, createSymlink. 

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