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https://issues.apache.org/jira/browse/YARN-582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13649449#comment-13649449
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Bikas Saha commented on YARN-582:
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bq. RMAppAttemptImpl.appAttemptTokens should simply be
Token<ApplicationTokenIdentifier>
Alternatively, it could Credentials so that no changes are needed for
additional tokens.
> Restore appToken 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, YARN-582.2.patch, YARN-582.3.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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