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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-279) Generalize RM token management
Date Fri, 21 Dec 2012 14:03:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13537875#comment-13537875
] 

Alejandro Abdelnur commented on YARN-279:
-----------------------------------------

Regarding pushing down the token management to the AM.

Why not use the '6 months passport validity rule'? In other words, require, on submission
that any delegation token being used must at least last until the AM is up and running, else
things would fail. Once the AM is up and running it is the AM responsibility to renew it.

                
> Generalize RM token management
> ------------------------------
>
>                 Key: YARN-279
>                 URL: https://issues.apache.org/jira/browse/YARN-279
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 3.0.0, 2.0.0-alpha, 0.23.5
>            Reporter: Daryn Sharp
>
> Token renewal/cancelation in the RM presents challenges to support arbitrary tokens.
 The RM's CLASSPATH is currently required to have token renewer classes and all associated
classes for the project's client.  The logistics of having installs on the RM of all hadoop
projects that submit jobs - just to support client connections to renew/cancel tokens - are
untenable.

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