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https://issues.apache.org/jira/browse/HADOOP-10758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16100433#comment-16100433
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Xiao Chen commented on HADOOP-10758:
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Thanks for the question [~lars_francke],

Docs could be found at 
http://hadoop.apache.org/docs/r3.0.0-alpha2/hadoop-kms/index.html#ACLs_Access_Control_Lists.

The configuration is physically located on KMS server - where normal users 
shouldn't have access to. Per the details in the doc, the key {{foo}}'s Key 
ACLs are prefixed with {{key.acl.foo}}, so still controlled by admin. (If the 
name isn't {{foo}}, then that's used for that name, rather than {{foo}})

> KMS: add ACLs on per key basis.
> -------------------------------
>
>                 Key: HADOOP-10758
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10758
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Alejandro Abdelnur
>            Assignee: Arun Suresh
>             Fix For: 2.6.0
>
>         Attachments: HADOOP-10758.1.patch, HADOOP-10758.2.patch, 
> HADOOP-10758.3.patch, HADOOP-10758.4.patch, HADOOP-10758.5.patch, 
> HADOOP-10758.6.patch, HADOOP-10758.7.patch, HADOOP-10758.8.patch, 
> HADOOP-10758.9.patch
>
>
> The KMS server should enforce ACLs on per key basis.



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