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Date: Tue, 10 Sep 2013 23:19:52 +0000 (UTC)
From: "Karthik Kambatla (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12665566.1377541733981.112146.1378855192602@arcas>
In-Reply-To: <JIRA.12665566.1377541733981@arcas>
References: <JIRA.12665566.1377541733981@arcas>
Subject: [jira] [Commented] (YARN-1098) Separate out RM services into
 "Always On" and "Active"
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    [ https://issues.apache.org/jira/browse/YARN-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763683#comment-13763683 ] 

Karthik Kambatla commented on YARN-1098:
----------------------------------------

[~bikassaha] and [~tucu00], thanks for the reviews.
                
> Separate out RM services into "Always On" and "Active"
> ------------------------------------------------------
>
>                 Key: YARN-1098
>                 URL: https://issues.apache.org/jira/browse/YARN-1098
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.1.0-beta
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>              Labels: ha
>             Fix For: 2.3.0
>
>         Attachments: yarn-1098-1.patch, yarn-1098-2.patch, yarn-1098-3.patch, yarn-1098-4.patch, yarn-1098-5.patch, yarn-1098-approach.patch, yarn-1098-approach.patch
>
>
> From discussion on YARN-1027, it makes sense to separate out services that are stateful and stateless. The stateless services can  run perennially irrespective of whether the RM is in Active/Standby state, while the stateful services need to  be started on transitionToActive() and completely shutdown on transitionToStandby().
> The external-facing stateless services should respond to the client/AM/NM requests depending on whether the RM is Active/Standby.

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