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https://issues.apache.org/jira/browse/HDFS-12907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16283681#comment-16283681
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Daryn Sharp commented on HDFS-12907:
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bq. I hope the kms clients were designed / documented / implemented / reviewed
perfectly too. Interestingly if you see the history of KMSCP class you'll see
quite a few attempts to make it 'work for the case of xxx'.
Sadly, no. The kms client, specifically KSMCP, is the source of the detailed
problems.
bq. consider some of the past behaviors simply wrong so we don't worry about
compatibility.
That would be fantastic but I suspect this was done as a rush to support
components like Hue, HttpFs. Jupyter, maybe Knox, etc when means it's going to
be a hard sell to break them...
> 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
> Attachments: HDFS-12907.001.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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