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https://issues.apache.org/jira/browse/HADOOP-6960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley resolved HADOOP-6960.
-----------------------------------

    Fix Version/s: 0.22.0
       Resolution: Duplicate

The trunk already has strong authentication for both HDFS and MapReduce based 
on Kerberos and delegation tokens.

> Hadoop Security Design
> ----------------------
>
>                 Key: HADOOP-6960
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6960
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Saikat Kanjilal
>            Priority: Minor
>             Fix For: 0.22.0
>
>   Original Estimate: 60h
>  Remaining Estimate: 60h
>
> An end-to-end proposal for how to support authentication and client side data 
> encryption/decryption, so that large data sets can be stored in a public HDFS 
> and only jobs launched by authenticated users can map-reduce or browse the 
> data. See HADOOP-xxx

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