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https://issues.apache.org/jira/browse/HDFS-3498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13401186#comment-13401186
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Hudson commented on HDFS-3498:
------------------------------
Integrated in Hadoop-Hdfs-trunk-Commit #2457 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/2457/])
HDFS-3498. Support replica removal in BlockPlacementPolicy and make
BlockPlacementPolicyDefault extensible for reusing code in subclasses.
Contributed by Junping Du (Revision 1353807)
Result = SUCCESS
szetszwo :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1353807
Files :
* /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/BlockManager.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicy.java
*
/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/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestReplicationPolicy.java
> Make Replica Removal Policy pluggable and ReplicaPlacementPolicyDefault
> extensible for reusing code in subclass
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-3498
> URL: https://issues.apache.org/jira/browse/HDFS-3498
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 1.0.0, 2.0.0-alpha
> Reporter: Junping Du
> Assignee: Junping Du
> Fix For: 3.0.0
>
> Attachments: HDFS-3498-v2.patch, HDFS-3498-v3.patch,
> HDFS-3498-v4.patch, HDFS-3498-v5.patch, HDFS-3498.patch,
> Hadoop-8471-BlockPlacementDefault-extensible.patch
>
>
> ReplicaPlacementPolicy is already a pluggable component in Hadoop. However,
> the Replica Removal Policy is still nested in BlockManager that need to be
> separated out into a ReplicaPlacementPolicy then can be override later. Also
> it looks like hadoop unit test lack the testing on replica removal policy, so
> we add it here.
> On the other hand, as a implementation of ReplicaPlacementPolicy,
> ReplicaPlacementDefault still show lots of generic for other topology cases
> like: virtualization, and we want to make code in
> ReplicaPlacementPolicyDefault can be reused as much as possible so a few of
> its methods were changed from private to protected.
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