Dibyendu Karmakar created HDFS-13853:
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             Summary: RouterAdmin update cmd is overwriting the entry not 
updating the existing
                 Key: HDFS-13853
                 URL: https://issues.apache.org/jira/browse/HDFS-13853
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Dibyendu Karmakar
            Assignee: Dibyendu Karmakar


{code:java}
// Create a new entry
Map<String, String> destMap = new LinkedHashMap<>();
for (String ns : nss) {
  destMap.put(ns, dest);
}
MountTable newEntry = MountTable.newInstance(mount, destMap);
{code}



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