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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-1098) Separate out RM services into "Always On" and "Active"
Date Fri, 30 Aug 2013 01:25:52 GMT

     [ https://issues.apache.org/jira/browse/YARN-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Karthik Kambatla updated YARN-1098:
-----------------------------------

    Summary: Separate out RM services into "Always On" and "Active"  (was: Separate out stateless
services from stateful services in the RM)
    
> 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
>         Attachments: 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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