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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4351) Make ContainersMonitor pluggable
Date Tue, 19 Jun 2012 20:26:43 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13397041#comment-13397041
] 

Robert Joseph Evans commented on MAPREDUCE-4351:
------------------------------------------------

MAPREDUCE-4256 Is trying to do something similar to this, but splitting the resource monitoring
up on a per resource basis. In light of that until we decided how we want monitoring of different
resources to look I would like to see NM_CONTAINERS_MONITOR and ContainersMonitor marked as
@Unstable.  Just so that it is obvious that these are likely to change in the future.

The rest of the patch looks good to me, but I have not dug into it in great detail. 
                
> Make ContainersMonitor pluggable
> --------------------------------
>
>                 Key: MAPREDUCE-4351
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4351
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv2, nodemanager
>            Reporter: Andrew Ferguson
>            Assignee: Andrew Ferguson
>         Attachments: MAPREDUCE-4351-v1.patch, MAPREDUCE-4351-v2.patch, MAPREDUCE-4351-v3.patch
>
>
> Make the existing ContainersManager pluggable, just as the ContainerExecutor is currently.
This will allow us to add container resource enforcement using other techniques (such as cgroups)
in an extensible fashion.

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