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From Vinayakumar B <vinayakuma...@huawei.com>
Subject RE: [VOTE] Merge HDFS-4685 HDFS ACLs to trunk
Date Tue, 11 Feb 2014 04:29:48 GMT
+1 (non-binding)

This feature is important and was pending for long time. Thanks everyone for all efforts.
I have been part of the implementation, reviewed patches and design document. 

Good work guys. 

Vinayakumar B.

-----Original Message-----
From: Chris Nauroth [mailto:cnauroth@hortonworks.com] 
Sent: 11 February 2014 06:17
To: hdfs-dev@hadoop.apache.org
Subject: [VOTE] Merge HDFS-4685 HDFS ACLs to trunk

Hello everyone,

I would like to call a vote to merge HDFS ACLs from branch HDFS-4685 to trunk.

HDFS ACLs provide support for finer-grained permissions on files than what users can express
today using traditional Unix permission bits.  An ACL (Access Control List) consists of a
set of ACL entries.  Each ACL entry names a specific user or group and grants or denies read,
write and execute permissions for that specific user or group.

Development of this feature has been tracked in issue HDFS-4685:

The current design document is available here:

All development work has been committed to the HDFS-4685 feature branch:

We're currently working on resolving conflicts with the fsimage protobuf merge, and we expect
to complete that work soon.

The feature is backwards-compatible.  By default, the feature is disabled.
 A cluster administrator must enable support for ACLs in configuration.
 There is no impact to existing clusters that choose to leave ACL support disabled.

In addition to the existing tests that cover permissions, we've developed more than 200 new
tests covering the new ACL get and set APIs through DistributedFileSystem and WebHdfsFileSystem,
the new CLI commands, enforcement of ACLs during file access, integration with the existing
permissions model, persistence of ACLs to fsimage and edits, and more.  We have documented
our further system testing plans in a test plan document attached to issue HDFS-4685.

I want to thank the numerous contributors who have participated in the branch development
up to this point.  Code contributors are Vinayakumar B, Sachin Jose, Renil Joseph, Haohui
Mai, Chris Nauroth and Jing Zhao.  Yesha Vora contributed the test plan.  The design document
incorporates feedback from many community members: Dilli Arumugam, Brandon Li, Haohui Mai,
Kevin Minder, Chris Nauroth, Sanjay Radia, Suresh Srinivas, Tsz Wo (Nicholas), SZE and Jing
Zhao.  Code reviewers on individual patches include Arpit Agarwal, Colin Patrick McCabe, Haohui
Mai, Chris Nauroth and Jing Zhao.

This vote runs for a week and closes on 2/17/2014 at 11:59 pm PT.

Chris Nauroth

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