Github user piaosama commented on a diff in the pull request:

    https://github.com/apache/twill/pull/71#discussion_r225817747
  
    --- Diff: 
twill-yarn/src/main/java/org/apache/twill/internal/yarn/YarnUtils.java ---
    @@ -202,6 +223,28 @@ public static void cloneHaNnCredentials(Configuration 
config) throws IOException
         }
       }
     
    +  /***
    +   * When hadoop_version > 2.8.0, class DFSUtils has no method 
getHaNnRpcAddresses(Configuration config)
    --- End diff --
    
    
https://github.com/apache/hadoop/commit/d12a0a25b4da1957ba0f658694729d2f2d400c5f#diff-f42f0d7039ba6a4ce427c67ae74dd7ec
    
    HDFS-11538. Move ClientProtocol HA proxies into hadoop-hdfs-client said 
this.


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