Yiqun Lin created HDFS-11530:
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             Summary: Use HDFS specific network topology to choose datanode in 
BlockPlacementPolicyDefault
                 Key: HDFS-11530
                 URL: https://issues.apache.org/jira/browse/HDFS-11530
             Project: Hadoop HDFS
          Issue Type: Sub-task
    Affects Versions: 3.0.0-alpha2
            Reporter: Yiqun Lin
            Assignee: Yiqun Lin


The work for {{chooseRandomWithStorageType}} has been merged in HDFS-11482. But 
this method is contained in new topology {{DFSNetworkTopology}} which is 
specified for HDFS. We should update this and let 
{{BlockPlacementPolicyDefault}} use the new way.



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