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https://issues.apache.org/jira/browse/HDFS-1150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12868373#action_12868373
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Devaraj Das commented on HDFS-1150:
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{quote}. Why can't the current setuid code launch the DataNode code as root,
DataNode does uid detection, and then drops privs as necessary? {quote}
This would have been ideal, except that in Java, we couldn't find a way of
doing this. Do you have pointers to this kind of a thing being done in Java
programs (other than the jsvc approach).
> 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: 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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