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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4148) disallow modification on RO snapshots
Date Mon, 12 Nov 2012 19:37:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13495543#comment-13495543
] 

Suresh Srinivas commented on HDFS-4148:
---------------------------------------

bq. Introduce a new SnapshotAccessControlException which extends AccessControlException.
Seems reasonable. I will leave it up to Brandon.

bq. This way programs which currently handle AccessControlException won't have to be changed
Can you give an example why some any application would handle this exception?
                
>  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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