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https://issues.apache.org/jira/browse/HADOOP-10150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13946037#comment-13946037
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Avik Dey commented on HADOOP-10150:
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[~tucu00] there are two patches posted by [~hitliuyi]. if you apply the xattrs
patch first, the cfs patch should then apply cleanly:
https://issues.apache.org/jira/secure/attachment/12636026/extended%20information%20based%20on%20INode%20feature.patch
in the posted cfs patch you will see there is no need to change HDFS URI e.g..
i thought that was in the latest doc, but guess not. anyway let me know if you
are still unable to apply the patches, that i think may help clear up a few of
the questions you have posted.
> Hadoop cryptographic file system
>
>
> Key: HADOOP-10150
> URL: https://issues.apache.org/jira/browse/HADOOP-10150
> Project: Hadoop Common
> 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-V2.docx, HADOOP cryptographic file system.pdf, cfs.patch, extended
> information based on INode feature.patch
>
>
> 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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