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From "Kan Zhang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6581) Add authenticated TokenIdentifiers to UGI so that they can be used for authorization
Date Sun, 21 Feb 2010 02:28:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12836300#action_12836300

Kan Zhang commented on HADOOP-6581:

Added a patch that
1. allows TokenIdentifiers to be added to a ugi so that they can be made available for authorization
checking in the RPC method.
2. updated RPC Server to add authenticated TokenIdentifiers to the ugi associated with the
3. minor refactoring of SaslRpcServer code.
4. Fixed an NPE bug in DelegationKey where an empty DelegationKey throws NPE when you try
to write it.

> Add authenticated TokenIdentifiers to UGI so that they can be used for authorization
> ------------------------------------------------------------------------------------
>                 Key: HADOOP-6581
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6581
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: ipc, security
>            Reporter: Kan Zhang
>            Assignee: Kan Zhang
>         Attachments: c6581-10.patch
> When token is used for authentication over RPC, information other than username may be
needed for access authorization. This information is typically specified in TokenIdentifier.
This is especially true for block tokens used for client-to-datanode accesses, where authorization
is based on access permissions specified in TokenIdentifier, and not on username. Block tokens
used to be called access tokens and one can think of them as capability tokens. See HADOOP-4359
for more info.

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