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From "Zhijie Shen (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (YARN-2798) YarnClient doesn't need to translate Kerberos name of timeline DT renewer
Date Sun, 02 Nov 2014 23:50:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-2798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14194071#comment-14194071
] 

Zhijie Shen edited comment on YARN-2798 at 11/2/14 11:50 PM:
-------------------------------------------------------------

Created patch to remove the translation logic from the client, and at the client side we just
need to ensure _HOST is going to be mapped to the right timeline server. Add the test cases
to verify the responsibility at both the client and server-side DT creating.

Please note that to make this work, core-site.xml that is presented to the timeline server
should have proper auth_to_local configuration.


was (Author: zjshen):
Created patch to remove the translation logic from the client, and at the client side we just
need to ensure _HOST is going to be mapped to the right timeline server. Add the test cases
to verify the responsibility at both the client and server-side DT creating.

Please note that to make this work, core-site.xml and yarn-site.xml that are presented to
the timeline server should have proper auth_to_local and rm principal configurations.

> YarnClient doesn't need to translate Kerberos name of timeline DT renewer
> -------------------------------------------------------------------------
>
>                 Key: YARN-2798
>                 URL: https://issues.apache.org/jira/browse/YARN-2798
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: timelineserver
>            Reporter: Arpit Gupta
>            Assignee: Zhijie Shen
>            Priority: Blocker
>         Attachments: YARN-2798.1.patch
>
>
> Now YarnClient will automatically get a timeline DT when submitting an app in a secure
mode. It will try to parse the yarn-site.xml/core-site.xml to get the RM daemon operating
system user. However, the RM principal and auth_to_local may not be properly presented to
the client, and the client cannot translate the principal to the daemon user properly. On
the other hand, AbstractDelegationTokenIdentifier will do this translation when create the
token. However, since the client has already translated the full principal into a short user
name (which may not be correct), the server can no longer apply the translation any more,
where RM principal and auth_to_local are always correct.



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