Address comments

Author: zhuxiangyi

hadoop-hdfs-project/hadoop-hdfs-rbf/src/site/markdown/HDFSRouterFederation.md

@@ -242,9 +242,9 @@ Mount table permission can be set by following command:
 The option mode is UNIX-style permissions for the mount table. Permissions are specified in octal, e.g. 0755. By default, this is set to 0755.
 
 #### Init ViewFs To Router
-Router supports initializing the ViewFS mount point to the Router. The mapping directory protocol of ViewFS must be HDFS, and the initializer only supports one-to-one mapping.
+Router supports initializing the [ViewFs](../hadoop-hdfs/ViewFs.html) mount point to the Router. The mapping directory protocol of ViewFS must be HDFS, and the initializer only supports one-to-one mapping.
 
-For example, use the following viewfs to configure the initial mount table to the router.
+For example, use the following [ViewFs](../hadoop-hdfs/ViewFs.html) to configure the initial mount table to the router.
 
     <configuration>
       <property>
@@ -253,7 +253,7 @@ For example, use the following viewfs to configure the initial mount table to th
       </property>
     </configuration>
 
-The ViewFS mount table can be initialized to the Router by using the following command:
+The [ViewFs](../hadoop-hdfs/ViewFs.html) mount table can be initialized to the Router by using the following command:
 
     [hdfs]$ $HADOOP_HOME/bin/hdfs dfsrouteradmin -initViewFsToMountTable ClusterX
 

hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterAdminCLI.java

@@ -740,6 +740,8 @@ public void testInitViewFsToMountTable() throws Exception {
     // 5.check
     assertEquals(1, mountTables.size());
     MountTable mountTable = mountTables.get(0);
+    List<RemoteLocation> destinations = mountTable.getDestinations();
+    assertEquals(1, destinations.size());
     assertEquals(user, mountTable.getOwnerName());
     assertEquals(group, mountTable.getGroupName());
     assertEquals(destPath.toUri().getPath(), mountTable.
@@ -908,7 +910,7 @@ public void testInvalidArgumentMessage() throws Exception {
         + " <quota in bytes or quota size string>]\n"
         + "\t[-clrQuota <path>]\n"
         + "\t[-clrStorageTypeQuota <path>]\n"
-        +"\t[-initViewFsToMountTable <clusterName>]\n"
+        + "\t[-initViewFsToMountTable <clusterName>]\n"
         + "\t[-safemode enter | leave | get]\n"
         + "\t[-nameservice enable | disable <nameservice>]\n"
         + "\t[-getDisabledNameservices]\n"