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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2514) Trash and permissions don't mix
Date Thu, 03 Jan 2008 23:33:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12555717#action_12555717
] 

Raghu Angadi commented on HADOOP-2514:
--------------------------------------

> Every other trashcan implementation I know of does not require changes to the filesystem,
but is implemented in user code. [...]

+1. I think eventually the Trash manager needs to store metadata required to maintain the
trash (probably in a HDFS file). IMO the lack this metatdata is the biggest limitation for
adding new features.

> Trash and permissions don't mix
> -------------------------------
>
>                 Key: HADOOP-2514
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2514
>             Project: Hadoop
>          Issue Type: New Feature
>          Components: dfs
>    Affects Versions: 0.16.0
>            Reporter: Robert Chansler
>             Fix For: 0.16.0
>
>
> Shell command "rm" is really "mv" to trash with the expectation that the server will
at some point really delete the contents of trash. With the advent of permissions, a user
can "mv" folders that the user cannot "rm". The present trash feature as implemented would
allow the user to suborn the server into deleting a folder in violation of the permissions
model.
> A related issue is that if anybody can mv a folder to the trash anybody else can mv that
same folder from the trash. This may be contrary to the expectations of the user.
> What is a better model for trash?

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