ChenSammi commented on a change in pull request #1194: HDDS-1879.  Support 
multiple excluded scopes when choosing datanodes in NetworkTopology
URL: https://github.com/apache/hadoop/pull/1194#discussion_r322646604
 
 

 ##########
 File path: 
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/scm/net/NetUtils.java
 ##########
 @@ -71,35 +72,39 @@ public static int locationToDepth(String location) {
    *  Remove node from mutableExcludedNodes if it's covered by excludedScope.
    *  Please noted that mutableExcludedNodes content might be changed after the
    *  function call.
-   * @return the new excludedScope
    */
-  public static String removeDuplicate(NetworkTopology topology,
-      Collection<Node> mutableExcludedNodes, String excludedScope,
+  public static void removeDuplicate(NetworkTopology topology,
+      Collection<Node> mutableExcludedNodes, List<String> 
mutableExcludedScopes,
       int ancestorGen) {
     if (mutableExcludedNodes == null || mutableExcludedNodes.size() == 0 ||
 
 Review comment:
   OK

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