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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8817) Backport Network Topology Extension for Virtualization (HADOOP-8468) to branch-1
Date Fri, 02 Nov 2012 18:15:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13489615#comment-13489615
] 

Luke Lu commented on HADOOP-8817:
---------------------------------

The changes lgtm. Please post ant test and test-patch results. Thanks Junping.
                
> Backport Network Topology Extension for Virtualization (HADOOP-8468) to branch-1
> --------------------------------------------------------------------------------
>
>                 Key: HADOOP-8817
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8817
>             Project: Hadoop Common
>          Issue Type: Sub-task
>    Affects Versions: 1.0.0
>            Reporter: Junping Du
>            Assignee: Junping Du
>              Labels: features
>         Attachments: HADOOP-8817.patch, HADOOP-8817-v2.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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