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https://issues.apache.org/jira/browse/HDFS-14935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16959623#comment-16959623
 ] 

Lisheng Sun edited comment on HDFS-14935 at 10/25/19 9:57 AM:
--------------------------------------------------------------

hi [~ayushtkn]

this Jira is used to optimize code and no need to write repetitive 
code.https://issues.apache.org/jira/secure/attachment/12984010/HDFS-14935.002.patch

use existing code as follow:
{code:java}
scope = NodeBase.normalize(scope);

public static String normalize(String path) {
  if (path == null) {
    throw new IllegalArgumentException(
        "Network Location is null ");
  }

  if (path.length() == 0) {
    return ROOT;
  }
  
  if (path.charAt(0) != PATH_SEPARATOR) {
    throw new IllegalArgumentException(
                                       "Network Location path does not start 
with "
                                       +PATH_SEPARATOR_STR+ ": "+path);
  }
  
  int len = path.length();
  if (path.charAt(len-1) == PATH_SEPARATOR) {
    return path.substring(0, len-1);
  }
  return path;
}
{code}
 


was (Author: leosun08):
hi [~ayushtkn]

this Jira is used to optimize code and no need to write repetitive code.

use existing code as follow:
{code:java}
scope = NodeBase.normalize(scope);

public static String normalize(String path) {
  if (path == null) {
    throw new IllegalArgumentException(
        "Network Location is null ");
  }

  if (path.length() == 0) {
    return ROOT;
  }
  
  if (path.charAt(0) != PATH_SEPARATOR) {
    throw new IllegalArgumentException(
                                       "Network Location path does not start 
with "
                                       +PATH_SEPARATOR_STR+ ": "+path);
  }
  
  int len = path.length();
  if (path.charAt(len-1) == PATH_SEPARATOR) {
    return path.substring(0, len-1);
  }
  return path;
}
{code}
 

> Optimize DFSNetworkTopology#isNodeInScope
> -----------------------------------------
>
>                 Key: HDFS-14935
>                 URL: https://issues.apache.org/jira/browse/HDFS-14935
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Lisheng Sun
>            Assignee: Lisheng Sun
>            Priority: Major
>         Attachments: HDFS-14935.001.patch, HDFS-14935.002.patch
>
>




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