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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6826) Plugin interface to enable delegation of HDFS authorization assertions
Date Tue, 16 Sep 2014 15:55:36 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14135635#comment-14135635
] 

Alejandro Abdelnur commented on HDFS-6826:
------------------------------------------

I've forgot to comment on the replay edits concerns, the v7.6 plugin API provides feedback
to the plugin implementation indicating if it is within a client filesystem call or not (not
is the case of replaying edit).

> Plugin interface to enable delegation of HDFS authorization assertions
> ----------------------------------------------------------------------
>
>                 Key: HDFS-6826
>                 URL: https://issues.apache.org/jira/browse/HDFS-6826
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: security
>    Affects Versions: 2.4.1
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>         Attachments: HDFS-6826-idea.patch, HDFS-6826-idea2.patch, HDFS-6826-permchecker.patch,
HDFS-6826v3.patch, HDFS-6826v4.patch, HDFS-6826v5.patch, HDFS-6826v6.patch, HDFS-6826v7.1.patch,
HDFS-6826v7.2.patch, HDFS-6826v7.3.patch, HDFS-6826v7.4.patch, HDFS-6826v7.5.patch, HDFS-6826v7.6.patch,
HDFS-6826v7.patch, HDFS-6826v8.patch, HDFS-6826v9.patch, HDFSPluggableAuthorizationProposal-v2.pdf,
HDFSPluggableAuthorizationProposal.pdf
>
>
> When Hbase data, HiveMetaStore data or Search data is accessed via services (Hbase region
servers, HiveServer2, Impala, Solr) the services can enforce permissions on corresponding
entities (databases, tables, views, columns, search collections, documents). It is desirable,
when the data is accessed directly by users accessing the underlying data files (i.e. from
a MapReduce job), that the permission of the data files map to the permissions of the corresponding
data entity (i.e. table, column family or search collection).
> To enable this we need to have the necessary hooks in place in the NameNode to delegate
authorization to an external system that can map HDFS files/directories to data entities and
resolve their permissions based on the data entities permissions.
> I’ll be posting a design proposal in the next few days.



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