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https://issues.apache.org/jira/browse/HDFS-3601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13406818#comment-13406818
]
Hudson commented on HDFS-3601:
------------------------------
Integrated in Hadoop-Common-trunk-Commit #2423 (See
[https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2423/])
HDFS-3601. Add BlockPlacementPolicyWithNodeGroup to support block placement
with 4-layer network topology. Contributed by Junping Du (Revision 1357442)
Result = SUCCESS
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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