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https://issues.apache.org/jira/browse/YARN-617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13645817#comment-13645817
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Daryn Sharp commented on YARN-617:
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If a token is available, the RPC client will attempt SASL DIGEST-MD5 regardless
of the client's security conf. A RPC server also enables SASL DIGEST-MD5 if a
secret manager is active. Isn't this sufficient to allow container tokens to
always be used for authentication?
> In unsercure mode, AM can fake resource requirements
> -----------------------------------------------------
>
> Key: YARN-617
> URL: https://issues.apache.org/jira/browse/YARN-617
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Priority: Minor
>
> Without security, it is impossible to completely avoid AMs faking resources.
> We can at the least make it as difficult as possible by using the same
> container tokens and the RM-NM shared key mechanism over unauthenticated
> RM-NM channel.
> In the minimum, this will avoid accidental bugs in AMs in unsecure mode.
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