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https://issues.apache.org/jira/browse/HDFS-6826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14113127#comment-14113127
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Jitendra Nath Pandey commented on HDFS-6826:
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In v7.5, in FSPermissionChecker#checkPermission, if the plugin is configured,
checkTraverse and rest of the existing code would still be invoked. A plugin
should have an ability to exclusively perform the permission checks.
> 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-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.patch,
> HDFS-6826v8.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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