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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1098) Separate out RM services into "Always On" and "Active"
Date Sun, 08 Sep 2013 20:09:51 GMT

    [ https://issues.apache.org/jira/browse/YARN-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13761520#comment-13761520
] 

Bikas Saha commented on YARN-1098:
----------------------------------

Patch looks good to me. Karthik, can you please rebase the patch wrt YARN-1107 so that we
can commit this. Thanks!

Unrelated. Why are the secret manager not services themselves? If they were we wouldnt have
to handle them separately in start and stop.


                
> 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-1098-1.patch, yarn-1098-2.patch, yarn-1098-3.patch, yarn-1098-4.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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