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https://issues.apache.org/jira/browse/HADOOP-12283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junping Du resolved HADOOP-12283.
---------------------------------
    Resolution: Duplicate
      Assignee:     (was: Junping Du)

> CLONE - Backport Network Topology Extension for Virtualization (HADOOP-8468) 
> to branch-1
> ----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-12283
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12283
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: ha, io
>    Affects Versions: 1.0.0
>            Reporter: RacingDawn
>              Labels: features
>             Fix For: 1.2.0
>
>         Attachments: HADOOP-8817-v2.patch, HADOOP-8817-v3.patch, 
> HADOOP-8817-v4.patch, HADOOP-8817.patch
>
>
> HADOOP-8468 propose network topology changes for running on virtualized 
> infrastructure, which includes:
> 1. Add "NodeGroup" layer in new NetworkTopology (also known as 
> NetworkTopologyWithNodeGroup): HADOOP-8469, HADOOP-8470
> 2. Update Replica Placement/Removal Policy to reflect new topology layer: 
> HDFS-3498, HDFS-3601
> 3. Update balancer policy:HDFS-3495
> 4. Update Task Scheduling Policy to reflect new topology layer and support 
> the case that compute nodes (NodeManager or TaskTracker) and data nodes are 
> separated into different VMs, but still benefit from physical host locality: 
> YARN-18, YARN-19.
> This JIRA will address the backport work on branch-1 which will be divided 
> into 4 issues/patches in related jira issues.



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