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https://issues.apache.org/jira/browse/HDFS-11998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Liang updated HDFS-11998:
------------------------------
    Attachment: HDFS-11998.002.patch

Thanks [~linyiqun] for the catch! updated in v002 patch which also made the 
changes of:

1. {{TestAvailableSpaceBlockPlacementPolicy}} is fixed like mentioned earlier
2. {{TestReplicationPolicyWithNodeGroup}} disables {{DFSNetworkTopology}}. This 
because this test is written to test the class 
{{NetworkTopologyWithNodeGroup}}, which is another extension of 
{{NetworkTopology}}. Enable DFSNetworkTopology for this test will have the test 
run against DFSNetworkTopology, while it is meant to be running on 
NetworkTopologyWithNodeGroup. So disabling DFSNetworkTopology as default for 
this particular test.

> Enable DFSNetworkTopology as default
> ------------------------------------
>
>                 Key: HDFS-11998
>                 URL: https://issues.apache.org/jira/browse/HDFS-11998
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Chen Liang
>            Assignee: Chen Liang
>         Attachments: HDFS-11998.001.patch, HDFS-11998.002.patch
>
>
> HDFS-11530 has made it configurable to use {{DFSNetworkTopology}}, and still 
> uses {{NetworkTopology}} as default. 
> Given the stress testing in HDFS-11923 which shows the correctness of 
> DFSNetworkTopology, and the performance testing in HDFS-11535 which shows how 
> DFSNetworkTopology can outperform NetworkTopology. I think we are at the 
> point where I can and should enable DFSNetworkTopology as default.
> Any comments/thoughts are more than welcome!



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