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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2267) Auxiliary Service support in RM
Date Thu, 10 Jul 2014 12:22:05 GMT

    [ https://issues.apache.org/jira/browse/YARN-2267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14057415#comment-14057415
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Naganarasimha G R commented on YARN-2267:
-----------------------------------------


Some scenarios for supporting Auxillary Service in RM:
Scenario 1: [Overload Control type]
	a. Monitor plugin inside RM can open rpc port and can recieve feedback from other components
in cluster (NM, HBase etc)
	b. Based on feedback, monitor plugin can take action such as remove a particular NM or change
capacity of an NM etc. 

Scenario 2: [Alarming module]
	a. Any state changes such as RM moved to Standby/Active, NM added , NM removed/decommisioned
etc can easily be informed/reported to central monitoring service. [instead of existing pull
type thru REST api's ]
	b. This plugin should also be able to register to RM for critical state changes as mentioned
above, so that these can be reported.



> Auxiliary Service support in RM
> -------------------------------
>
>                 Key: YARN-2267
>                 URL: https://issues.apache.org/jira/browse/YARN-2267
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>            Reporter: Naganarasimha G R
>
> Currently RM does not have a provision to run any Auxiliary services. For health/monitoring
in RM, its better to make a plugin mechanism in RM itself, similar to NM.



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