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https://issues.apache.org/jira/browse/HADOOP-12295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yi Liu updated HADOOP-12295:
----------------------------
    Description: 
In {{NetworkTopology#InnerNode#remove}}, We can use {{childrenMap}} to get the 
parent node, no need to loop the {{children}} list. Then it is more efficient 
since in most cases deleting parent node doesn't happen.
Another nit in current code is:
{code}
  String parent = n.getNetworkLocation();
  String currentPath = getPath(this);
{code}
can be in closure of {{\!isAncestor\(n\)}}

  was:
In {{NetworkTopology#InnerNode#remove}}, We can use {{childrenMap}} to get the 
parent node, no need to loop the {{children}} list.
Another nit in current code is:
{code}
  String parent = n.getNetworkLocation();
  String currentPath = getPath(this);
{code}
can be in closure of {{\!isAncestor\(n\)}}


> Improve NetworkTopology#InnerNode#remove logic
> ----------------------------------------------
>
>                 Key: HADOOP-12295
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12295
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Yi Liu
>            Assignee: Yi Liu
>         Attachments: HADOOP-12295.001.patch
>
>
> In {{NetworkTopology#InnerNode#remove}}, We can use {{childrenMap}} to get 
> the parent node, no need to loop the {{children}} list. Then it is more 
> efficient since in most cases deleting parent node doesn't happen.
> Another nit in current code is:
> {code}
>   String parent = n.getNetworkLocation();
>   String currentPath = getPath(this);
> {code}
> can be in closure of {{\!isAncestor\(n\)}}



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