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https://issues.apache.org/jira/browse/YARN-582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13644820#comment-13644820
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Vinod Kumar Vavilapalli commented on YARN-582:
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bq. Is it feasible to handle all tokens in an opaque credentials within the
store?
Agreed. But because there are two types of tokens - application level and
application-attempt level, we should have two credential fields.
> Restore appToken and clientToken for app attempt after RM restart
> -----------------------------------------------------------------
>
> Key: YARN-582
> URL: https://issues.apache.org/jira/browse/YARN-582
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Bikas Saha
> Assignee: Jian He
> Attachments: YARN-582.1.patch
>
>
> These need to be saved and restored on a per app attempt basis. This is
> required only when work preserving restart is implemented for secure
> clusters. In non-preserving restart app attempts are killed and so this does
> not matter.
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