aajisaka commented on a change in pull request #2360:
URL: https://github.com/apache/hadoop/pull/2360#discussion_r499966438



##########
File path: 
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterClientProtocol.java
##########
@@ -1799,10 +1800,14 @@ public void satisfyStoragePolicy(String path) throws 
IOException {
   }
 
   @Override
-  public HAServiceProtocol.HAServiceState getHAServiceState()
-      throws IOException {
-    rpcServer.checkOperation(NameNode.OperationCategory.READ, false);
-    return null;
+  public HAServiceProtocol.HAServiceState getHAServiceState() {
+    try {
+      // check safemode or not
+      rpcServer.checkOperation(NameNode.OperationCategory.WRITE);

Review comment:
       Thank you for your comment. Updated the patch to just check the state 
instead of using StandbyException.




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