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https://issues.apache.org/jira/browse/YARN-1307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13845647#comment-13845647
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Jian He commented on YARN-1307:
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patch looks good to me, thanks for the updating
> 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-1307.10.patch,
> YARN-1307.11.patch, YARN-1307.2.patch, YARN-1307.3.patch,
> YARN-1307.4-2.patch, YARN-1307.4-3.patch, YARN-1307.4.patch,
> YARN-1307.5.patch, YARN-1307.6.patch, YARN-1307.7.patch, YARN-1307.8.patch,
> YARN-1307.9.patch, YARN-1307.9.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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