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From "Doug Cutting (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8139) Path does not allow metachars to be escaped
Date Thu, 08 Mar 2012 21:55:57 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13225569#comment-13225569
] 

Doug Cutting commented on HADOOP-8139:
--------------------------------------

Do you plan to make any changes to RawLocalFileSystem or test anything on Windows?  If not,
since this introduces regressions on Windows, you should probably at least file some issues
to fix these.  As regressions, these should probably be blockers on releases that include
this change.  These might be sub-tasks of HADOOP-8079.  Should we link this issue to HADOOP-8079?
                
> Path does not allow metachars to be escaped
> -------------------------------------------
>
>                 Key: HADOOP-8139
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8139
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.23.0, 0.24.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Blocker
>         Attachments: HADOOP-8139-2.patch, HADOOP-8139.patch, HADOOP-8139.patch
>
>
> Path converts "\" into "/", probably for windows support?  This means it's impossible
for the user to escape metachars in a path name.  Glob expansion can have deadly results.
> Here are the most egregious examples. A user accidentally creates a path like "/user/me/*/file".
 Now they want to remove it.
> {noformat}"hadoop fs -rmr -skipTrash '/user/me/\*'" becomes...
> "hadoop fs -rmr -skipTrash /user/me/*"{noformat}
> * User/Admin: Nuked their home directory or any given directory
> {noformat}"hadoop fs -rmr -skipTrash '\*'" becomes...
> "hadoop fs -rmr -skipTrash /*"{noformat}
> * User:  Deleted _everything_ they have access to on the cluster
> * Admin: *Nukes the entire cluster*
> Note: FsShell is shown for illustrative purposes, however the problem is in the Path
object, not FsShell.

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