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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12907) Allow read-only access to reserved raw for non-superusers
Date Thu, 14 Dec 2017 21:17:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kihwal Lee updated HDFS-12907:
------------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 2.8.4
                   3.0.1
                   2.9.1
                   2.10.0
                   3.1.0
           Status: Resolved  (was: Patch Available)

Committed this to trunk, branch-3.0, branch-2, branch-2.9 and branch-2.8. I enjoyed reading
the discussion in this jira. Thanks everyone.

> Allow read-only access to reserved raw for non-superusers
> ---------------------------------------------------------
>
>                 Key: HDFS-12907
>                 URL: https://issues.apache.org/jira/browse/HDFS-12907
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.6.0
>            Reporter: Daryn Sharp
>            Assignee: Rushabh S Shah
>             Fix For: 3.1.0, 2.10.0, 2.9.1, 3.0.1, 2.8.4
>
>         Attachments: HDFS-12907.001.patch, HDFS-12907.002.patch, HDFS-12907.003.patch,
HDFS-12907.004.patch, HDFS-12907.branch-2.004.patch, HDFS-12907.patch
>
>
> HDFS-6509 added a special /.reserved/raw path prefix to access the raw file contents
of EZ files.  In the simplest sense it doesn't return the FE info in the {{LocatedBlocks}}
so the dfs client doesn't try to decrypt the data.  This facilitates allowing tools like distcp
to copy raw bytes.
> Access to the raw hierarchy is restricted to superusers.  This seems like an overly broad
restriction designed to prevent non-admins from munging the EZ related xattrs.  I believe
we should relax the restriction to allow non-admins to perform read-only operations.  Allowing
non-superusers to easily read the raw bytes will be extremely useful for regular users, esp.
for enabling webhdfs client-side encryption.



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