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https://issues.apache.org/jira/browse/HDFS-3498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13399452#comment-13399452
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Hadoop QA commented on HDFS-3498:
---------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12532832/HDFS-3498-v3.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 1 new or modified test
files.
-1 javac. The patch appears to cause the build to fail.
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/2686//console
This message is automatically generated.
> Make ReplicaPlacementPolicyDefault extensible for reuse code in subclass
> ------------------------------------------------------------------------
>
> Key: HDFS-3498
> URL: https://issues.apache.org/jira/browse/HDFS-3498
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Affects Versions: 1.0.0, 2.0.0-alpha
> Reporter: Junping Du
> Assignee: Junping Du
> Attachments: HDFS-3498-v2.patch, HDFS-3498-v3.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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