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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-248) Restore RMDelegationTokenSecretManager state on restart
Date Thu, 29 Nov 2012 16:30:59 GMT

    [ https://issues.apache.org/jira/browse/YARN-248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506574#comment-13506574
] 

Tom White commented on YARN-248:
--------------------------------

I thought about it more, and delegation tokens from the job's credentials are written to the
job submit directory in a file called appTokens. This is MR-specific, however, so we can't
use it from YARN, which means ii) isn't appropriate.

This issue affects JT job recovery too (see MAPREDUCE-4830).

                
> Restore RMDelegationTokenSecretManager state on restart
> -------------------------------------------------------
>
>                 Key: YARN-248
>                 URL: https://issues.apache.org/jira/browse/YARN-248
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Tom White
>
> On restart, the RM creates a new RMDelegationTokenSecretManager with fresh state. This
will cause problems for Oozie jobs running on secure clusters since the delegation tokens
stored in the job credentials (used by the Oozie launcher job to submit a job to the RM) will
not be recognized by the RM, and recovery will fail.

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