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https://issues.apache.org/jira/browse/HDFS-5143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13821749#comment-13821749
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Avik Dey commented on HDFS-5143:
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@Owen If you don't think you are misquoting me, then you must be confused.
Don't confuse our discussion on CFS and the other discussion on encryption
support in various file formats. Just because we are working on the later does
not mean one should conclude we are not working on the former. As you can see a
patch of this size could hardly have been produced overnight.
I don't think I can add any more to what I have said, so this will be my last
post on the topic.
> Hadoop cryptographic file system
> --------------------------------
>
> Key: HDFS-5143
> URL: https://issues.apache.org/jira/browse/HDFS-5143
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: security
> Affects Versions: 3.0.0
> Reporter: Yi Liu
> Assignee: Yi Liu
> Labels: rhino
> Fix For: 3.0.0
>
> Attachments: CryptographicFileSystem.patch, HADOOP cryptographic file
> system.pdf
>
>
> There is an increasing need for securing data when Hadoop customers use
> various upper layer applications, such as Map-Reduce, Hive, Pig, HBase and so
> on.
> HADOOP CFS (HADOOP Cryptographic File System) is used to secure data, based
> on HADOOP “FilterFileSystem” decorating DFS or other file systems, and
> transparent to upper layer applications. It’s configurable, scalable and fast.
> High level requirements:
> 1. Transparent to and no modification required for upper layer
> applications.
> 2. “Seek”, “PositionedReadable” are supported for input stream of CFS if
> the wrapped file system supports them.
> 3. Very high performance for encryption and decryption, they will not
> become bottleneck.
> 4. Can decorate HDFS and all other file systems in Hadoop, and will not
> modify existing structure of file system, such as namenode and datanode
> structure if the wrapped file system is HDFS.
> 5. Admin can configure encryption policies, such as which directory will
> be encrypted.
> 6. A robust key management framework.
> 7. Support Pread and append operations if the wrapped file system supports
> them.
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