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https://issues.apache.org/jira/browse/HDFS-1150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894441#action_12894441
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Jakob Homan commented on HDFS-1150:
-----------------------------------

Do whatever you like.  As I've said repeatedly, this patch is going to mirror 
the 20 patch.  I'm not changing it, but will be happy to add this new feature 
in another JIRA.

> Verify datanodes' identities to clients in secure clusters
> ----------------------------------------------------------
>
>                 Key: HDFS-1150
>                 URL: https://issues.apache.org/jira/browse/HDFS-1150
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: data-node
>    Affects Versions: 0.22.0
>            Reporter: Jakob Homan
>            Assignee: Jakob Homan
>         Attachments: commons-daemon-1.0.2-src.tar.gz, 
> HDFS-1150-BF-Y20-LOG-DIRS-2.patch, HDFS-1150-BF-Y20-LOG-DIRS.patch, 
> HDFS-1150-BF1-Y20.patch, hdfs-1150-bugfix-1.1.patch, 
> hdfs-1150-bugfix-1.2.patch, hdfs-1150-bugfix-1.patch, HDFS-1150-trunk.patch, 
> HDFS-1150-Y20-BetterJsvcHandling.patch, HDFS-1150-y20.build-script.patch, 
> HDFS-1150-Y20S-ready-5.patch, HDFS-1150-Y20S-ready-6.patch, 
> HDFS-1150-Y20S-ready-7.patch, HDFS-1150-Y20S-ready-8.patch, 
> HDFS-1150-Y20S-Rough-2.patch, HDFS-1150-Y20S-Rough-3.patch, 
> HDFS-1150-Y20S-Rough-4.patch, HDFS-1150-Y20S-Rough.txt
>
>
> Currently we use block access tokens to allow datanodes to verify clients' 
> identities, however we don't have a way for clients to verify the 
> authenticity of the datanodes themselves.

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