Allen Wittenauer commented on YARN-3170:

split up the two major functionalities such as resource management

... split up the functionalities of resource management ...

NodeManager , form 

Drop the comma.

system.The NodeManager 


 The ApplicationsManager is responsible for accepting job-submissions, 
negotiating the first container for executing the application specific 
ApplicationMaster and provides the service for restarting the ApplicationMaster 
container on failure.
-The NodeManager is the per-machine framework agent who is responsible for 
containers, monitoring their resource usage (cpu, memory, disk, network) and 
reporting the same to the ResourceManager/Scheduler.
 The per-application ApplicationMaster has the responsibility of negotiating 
appropriate resource containers from the Scheduler, tracking their status and 
monitoring for progress.


With this delete, these paragraphs should probably be merged.

 on top of MRv2 with


> YARN architecture document needs updating
> -----------------------------------------
>                 Key: YARN-3170
>                 URL: https://issues.apache.org/jira/browse/YARN-3170
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: documentation
>            Reporter: Allen Wittenauer
>            Assignee: Brahma Reddy Battula
>              Labels: BB2015-05-TBR
>         Attachments: YARN-3170-002.patch, YARN-3170-003.patch, 
> YARN-3170-004.patch, YARN-3170-005.patch, YARN-3170-006.patch, YARN-3170.patch
> The marketing paragraph at the top, "NextGen MapReduce", etc are all 
> marketing rather than actual descriptions. It also needs some general 
> updates, esp given it reads as though 0.23 was just released yesterday.

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