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Date: Thu, 17 Oct 2013 18:58:42 +0000 (UTC)
From: "Tsuyoshi OZAWA (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12673794.1381794575511.81884.1382036322478@arcas>
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Subject: [jira] [Commented] (YARN-1307) Rethink znode structure for RM HA
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    [ https://issues.apache.org/jira/browse/YARN-1307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13798273#comment-13798273 ] 

Tsuyoshi OZAWA commented on YARN-1307:
--------------------------------------

OK, the design by Bikas looks good to me. I'll resume to write a patch for this JIRA when we decide the sequencing of YARN-1222 and YARN-1307 to do.

> 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
>
> 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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