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https://issues.apache.org/jira/browse/HDFS-6134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14095204#comment-14095204
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Sanjay Radia commented on HDFS-6134:
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Larry I don't completely get the difference between webhdfs and httpfs but I
think the cause of the difference is that user hdfs is superuser (note DN runs
as hdfs and webhdfs code is executed on behalf of the end-user inside the DN
after checking the permissions), Hence I think this would potentially open up
access to all encrypted files that are readable. However that should NOT happen
if doAs is used (correct?).
I agree it would be unacceptable to say that if one enables transparent
encryption then one should disable webhdfs because it would become insecure,
Andrew say that "Regarding webhdfs, it's not a recommended deployment" but
Aljeandro say "Both httpfs and webhdfs will work just fine" but then in the
same paragraph says "this could fail some security audits".
> Transparent data at rest encryption
> -----------------------------------
>
> Key: HDFS-6134
> URL: https://issues.apache.org/jira/browse/HDFS-6134
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: security
> Affects Versions: 3.0.0, 2.3.0
> Reporter: Alejandro Abdelnur
> Assignee: Charles Lamb
> Attachments: HDFS-6134.001.patch, HDFS-6134.002.patch,
> HDFS-6134_test_plan.pdf, HDFSDataatRestEncryption.pdf,
> HDFSDataatRestEncryptionProposal_obsolete.pdf,
> HDFSEncryptionConceptualDesignProposal-2014-06-20.pdf
>
>
> Because of privacy and security regulations, for many industries, sensitive
> data at rest must be in encrypted form. For example: the healthÂcare industry
> (HIPAA regulations), the card payment industry (PCI DSS regulations) or the
> US government (FISMA regulations).
> This JIRA aims to provide a mechanism to encrypt HDFS data at rest that can
> be used transparently by any application accessing HDFS via Hadoop Filesystem
> Java API, Hadoop libhdfs C library, or WebHDFS REST API.
> The resulting implementation should be able to be used in compliance with
> different regulation requirements.
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