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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8472) Implementation of ReplicaPlacementPolicyNodeGroup to support 4-layer network topology
Date Fri, 29 Jun 2012 16:30:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404005#comment-13404005

Hadoop QA commented on HADOOP-8472:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 2 new or modified test files.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

    -1 core tests.  The patch failed these unit tests in hadoop-common-project/hadoop-common


    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/1155//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/1155//console

This message is automatically generated.
> Implementation of ReplicaPlacementPolicyNodeGroup to support 4-layer network topology
> -------------------------------------------------------------------------------------
>                 Key: HADOOP-8472
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8472
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: ha, io
>    Affects Versions: 1.0.0, 2.0.0-alpha
>            Reporter: Junping Du
>            Assignee: Junping Du
>         Attachments: HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl-v2.patch, HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl-v3.patch,
HADOOP-8472-BlockPlacementPolicyWithNodeGroup-impl-v4.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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