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Posted to yarn-issues@hadoop.apache.org by "Ravi Prakash (JIRA)" <ji...@apache.org> on 2015/02/25 18:32:05 UTC

[jira] [Commented] (YARN-977) Interface for users/AM to know actual usage by the container

    [ https://issues.apache.org/jira/browse/YARN-977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14336808#comment-14336808 ] 

Ravi Prakash commented on YARN-977:
-----------------------------------

Is this related to YARN-1856? 

> Interface for users/AM to know actual usage by the container
> ------------------------------------------------------------
>
>                 Key: YARN-977
>                 URL: https://issues.apache.org/jira/browse/YARN-977
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Omkar Vinit Joshi
>
> Today we allocate resource (memory and cpu) and node manager starts the container with requested resource [I am assuming they are using cgroups]. But there is definitely a possibility of users requesting more than what they actually may need during the execution of their container/job-task. If we add a way for users/AM to know the actual usage of the requested/completed container then they may optimize it for next run..
> This will be helpful for AM to optimize cpu/memory resource requests by querying NM/RM to know avg/max cpu/memory usage of the container or may be containers belonging to application.



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