remove warn logs

Author: guoyz50

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/GlobalStateIdContext.java

@@ -157,11 +157,9 @@ public long receiveRequestState(RpcRequestHeaderProto header,
         ESTIMATED_TRANSACTIONS_PER_SECOND
             * TimeUnit.MILLISECONDS.toSeconds(clientWaitTime)
             * ESTIMATED_SERVER_TIME_MULTIPLIER) {
-      String message = "Retrying to Active NameNode, Observer Node is too"
+      throw new ObserverRetryOnActiveException("Retrying to Active NameNode, Observer Node is too"
           + " far behind: serverStateId = " + serverStateId
-          + " clientStateId = " + clientStateId;
-      FSNamesystem.LOG.warn(message);
-      throw new ObserverRetryOnActiveException(message);
+          + " clientStateId = " + clientStateId);
     }
     return clientStateId;
   }