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https://issues.apache.org/jira/browse/HDFS-4685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747891#comment-13747891
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Sanjay Radia commented on HDFS-4685:
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When we added permissions to HDFS in Hadoop 0.16 we had originally considered
having only ACLs for directories and not doing Unix like permissions. Then, due
to lack time, we decide to go with unix style permissions. At that time we had
proposed the following:
* Any directory can have an ACL
* An ACL specifies the list of users and groups that can access that
directory's subtree. As you resolve paths you take the most stringent
permission - i.e. the most restrictive permission.
* An ACL also specified who can change the ACL. ie. changes to ACLs can be done
by others besides the owner.
> Implementation of extended file acl in hdfs
> -------------------------------------------
>
> Key: HDFS-4685
> URL: https://issues.apache.org/jira/browse/HDFS-4685
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client, namenode, security
> Affects Versions: 1.1.2
> Reporter: Sachin Jose
> Assignee: Chris Nauroth
> Priority: Minor
>
> Currenly hdfs doesn't support Extended file ACL. In unix extended ACL can be
> achieved using getfacl and setfacl utilities. Is there anybody working on
> this feature ?
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