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From "Hitesh Shah (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-989) MR2 specific metrics should be collected
Date Tue, 30 Jul 2013 21:11:49 GMT

    [ https://issues.apache.org/jira/browse/YARN-989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13724437#comment-13724437
] 

Hitesh Shah commented on YARN-989:
----------------------------------

What is the use-case that you are trying to solve that requires running/waiting number of
map/reduce tasks? In YARN, you will probably only have access to the total no. of containers
running across all application types. The scheduler apis may be able to surface the total
of pending asks ( which would translate into waiting containers ) I believe. 
                
> MR2 specific metrics should be collected
> ----------------------------------------
>
>                 Key: YARN-989
>                 URL: https://issues.apache.org/jira/browse/YARN-989
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: api, applications
>    Affects Versions: 2.1.0-beta
>            Reporter: Srimanth Gunturi
>
> We have a usecase to show the below information. We can find job count by calling the
/apps endpoint and filtering by type/state. But we need a way (JMX/API) to get the number
of map/red tasks that are running/waiting.
> {noformat}
> Total Jobs: x jobs
> Tasks: Maps	a running / b waiting
> Tasks: Reduces	c running / d waiting
> {noformat}

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