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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3913) Distcp allows copy even if directory permissions are 000.
Date Mon, 11 Aug 2008 17:32:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12621512#action_12621512
] 

Tsz Wo (Nicholas), SZE commented on HADOOP-3913:
------------------------------------------------

By superusers (in hadoop), I mean the user started the namenode or the users belonging one
of the groups specified in dfs.permissions.supergroup.  In your case, you are copying from
a 0.18 cluster to a 0.17 cluster.  Note that your 0.18 superusers and 0.17 superusers could
be different.

I guess you might have used a superuser account in your 0.18 cluster to do distcp.  So the
copy success even the directory is 000.  I will check this.

> Distcp allows copy even if directory permissions are 000.
> ---------------------------------------------------------
>
>                 Key: HADOOP-3913
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3913
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: tools/distcp
>    Affects Versions: 0.18.0
>            Reporter: Suman Sehgal
>
> distcp initiated from 0.17.0 and 0.18.0 permissions turned ON, directory with permission
000, data gets copied from
> 0.18.0 to 0.17.0 
> Data gets copied between different versions of hadoop when tried by the same user. It
gets failed only if other
> user(other than the user who started cluster) tries to copy data using distcp.

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