Inigo Goiri created HADOOP-12185:
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             Summary: NetworkTopology is not efficient adding/getting/removing 
nodes
                 Key: HADOOP-12185
                 URL: https://issues.apache.org/jira/browse/HADOOP-12185
             Project: Hadoop Common
          Issue Type: Improvement
    Affects Versions: 2.7.0
            Reporter: Inigo Goiri
            Assignee: Inigo Goiri


NetworkToplogy uses nodes with a list of children. The access to these children 
is slow as it's a linear search.



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