Junping Du commented on YARN-18:

Thanks [~gujilangzi] and [~ashahab] for the effort! Last time when I was in a 
YARN meetup, the feedback from YARN community is that a hierarchical way is 
more preferable. So I renew the proposal here (see newer one attached), but 
haven't get chance to prototype a patch. Quite busy recently on other YARN 
features, so it may take more time for me to have a patch ready. Let me know if 
you have interest on helping dev/review/test effort for new patches. Thx! 

> Configurable Hierarchical Topology for YARN
> -------------------------------------------
>                 Key: YARN-18
>                 URL: https://issues.apache.org/jira/browse/YARN-18
>             Project: Hadoop YARN
>          Issue Type: New Feature
>    Affects Versions: 2.0.3-alpha
>            Reporter: Junping Du
>            Assignee: Junping Du
>              Labels: features
>         Attachments: 
> HADOOP-8474-ContainerAssignmentTaskScheduling-pluggable.patch, 
> HierachicalTopologyForYARNr1.pdf, MAPREDUCE-4309-v2.patch, 
> MAPREDUCE-4309-v3.patch, MAPREDUCE-4309-v4.patch, MAPREDUCE-4309-v5.patch, 
> MAPREDUCE-4309-v6.patch, MAPREDUCE-4309-v7.patch, MAPREDUCE-4309.patch, 
> Pluggable topologies with NodeGroup for YARN.pdf, YARN-18-v2.patch, 
> YARN-18-v3.1.patch, YARN-18-v3.2.patch, YARN-18-v3.patch, YARN-18-v4.1.patch, 
> YARN-18-v4.2.patch, YARN-18-v4.3.patch, YARN-18-v4.patch, YARN-18-v5.1.patch, 
> YARN-18-v5.patch, YARN-18-v6.1.patch, YARN-18-v6.2.patch, YARN-18-v6.3.patch, 
> YARN-18-v6.4.patch, YARN-18-v6.patch, YARN-18-v7.1.patch, YARN-18-v7.2.patch, 
> YARN-18-v7.3.patch, YARN-18-v7.patch, YARN-18-v8.0.patch, YARN-18.patch, 
> YARN-18.v8.1.patch
> Per discussion in the design lounge of Hadoop Summit 2013, we agreed to 
> change the design of “Pluggable topologies with NodeGroup for YARN” to 
> support a configurable hierarchical topology that makes adding additional 
> locality layers simple. Please refer attached doc 
> HierachicalTopologyForYARNr1.pdf for details.

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