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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7693) ContainersMonitor support configurable
Date Wed, 03 Jan 2018 22:38:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16310402#comment-16310402
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Arun Suresh commented on YARN-7693:
-----------------------------------

I agree with [~miklos.szegedi@cloudera.com], there are better ways, as he has listed, to do
this than plug in a new monitor. Also, do take a look at the {{ResourceUtilizationTracker}}
interface, which was actually designed to be pluggable (although we havn't externalized any
config. variable for it). It is used by the ContainerScheduler to decide if there are resources
available to start a container.

> ContainersMonitor support configurable
> --------------------------------------
>
>                 Key: YARN-7693
>                 URL: https://issues.apache.org/jira/browse/YARN-7693
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: nodemanager
>            Reporter: Jiandan Yang 
>            Assignee: Jiandan Yang 
>            Priority: Minor
>         Attachments: YARN-7693.001.patch, YARN-7693.002.patch
>
>
> Currently ContainersMonitor has only one default implementation ContainersMonitorImpl,
> After introducing Opportunistic Container, ContainersMonitor needs to monitor system
metrics and even dynamically adjust Opportunistic and Guaranteed resources in the cgroup,
so another ContainersMonitor may need to be implemented. 
> The current ContainerManagerImpl ContainersMonitorImpl direct new ContainerManagerImpl,
so ContainersMonitor need to be configurable.



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