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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3601) Implementation of ReplicaPlacementPolicyNodeGroup to support 4-layer network topology
Date Thu, 05 Jul 2012 11:40:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13407012#comment-13407012
] 

Hudson commented on HDFS-3601:
------------------------------

Integrated in Hadoop-Hdfs-trunk #1094 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1094/])
    HDFS-3601. Add BlockPlacementPolicyWithNodeGroup to support block placement with 4-layer
network topology.  Contributed by Junping Du (Revision 1357442)

     Result = FAILURE
szetszwo : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1357442
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopology.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopologyWithNodeGroup.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicyDefault.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicyWithNodeGroup.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestReplicationPolicyWithNodeGroup.java

                
> Implementation of ReplicaPlacementPolicyNodeGroup to support 4-layer network topology
> -------------------------------------------------------------------------------------
>
>                 Key: HDFS-3601
>                 URL: https://issues.apache.org/jira/browse/HDFS-3601
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: name-node
>            Reporter: Junping Du
>            Assignee: Junping Du
>             Fix For: 3.0.0
>
>         Attachments: HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl-v2.patch, HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl-v3.patch,
HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl-v4.patch, HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl-v5.patch,
HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl-v6.patch, HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl.patch
>
>
> A subclass of ReplicaPlacementPolicyDefault, ReplicaPlacementPolicyNodeGroup was developed
along with unit tests to support the four-layer hierarchical topology.
> The replica placement strategy used in ReplicaPlacementPolicyNodeGroup virtualization
is almost the same as the original one. The differences are:
> 1. The 3rd replica will be off node group of the 2nd replica
> 2. If there is no local node available, the 1st replica will be placed on a node in the
local node group.

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