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https://issues.apache.org/jira/browse/YARN-1307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13804823#comment-13804823
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Tsuyoshi OZAWA commented on YARN-1307:
--------------------------------------

IIUC, You're correct, Bikas.  What I'd like to say is summarized as following 
questions: Can we encode RMDelegationKey's and RMDelegationToken's suffix 
numbers directly? Or, We should we encript them because of security reason?

I expressed these suffix numbers as "sequential numbers", so I can confuse you. 
I apologize for this.

> Rethink znode structure for RM HA
> ---------------------------------
>
>                 Key: YARN-1307
>                 URL: https://issues.apache.org/jira/browse/YARN-1307
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
>         Attachments: YARN-1307.1.patch, YARN-1307.2.patch
>
>
> Rethink for znode structure for RM HA is proposed in some JIRAs(YARN-659, 
> YARN-1222). The motivation of this JIRA is quoted from Bikas' comment in 
> YARN-1222:
> {quote}
> We should move to creating a node hierarchy for apps such that all znodes for 
> an app are stored under an app znode instead of the app root znode. This will 
> help in removeApplication and also in scaling better on ZK. The earlier code 
> was written this way to ensure create/delete happens under a root znode for 
> fencing. But given that we have moved to multi-operations globally, this isnt 
> required anymore.
> {quote}



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