fix checkstyle

Author: tomscut

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

@@ -184,28 +184,28 @@ public void testPrintTopologyNoDatanodesTextFormat() throws Exception {
     assertTrue(topology.contains("No DataNodes"));
   }
 
-   @Test
-   public void testPrintTopologyNoDatanodesJsonFormat() throws Exception {
-     // get http Address
-     String httpAddress = clusterNoDatanodes.getRandomRouter().getRouter()
-         .getHttpServerAddress().toString();
-
-     // send http request
-     URL url = new URL("http:/" + httpAddress + "/topology");
-     HttpURLConnection conn = (HttpURLConnection) url.openConnection();
-     conn.setReadTimeout(20000);
-     conn.setConnectTimeout(20000);
-     conn.setRequestProperty("Accept", "application/json");
-     conn.connect();
-     ByteArrayOutputStream out = new ByteArrayOutputStream();
-     IOUtils.copyBytes(conn.getInputStream(), out, 4096, true);
-     StringBuilder sb =
-         new StringBuilder("-- Network Topology -- \n");
-     sb.append(out);
-     sb.append("\n-- Network Topology -- ");
-     String topology = sb.toString();
-
-     // assert node number
-     assertTrue(topology.contains("No DataNodes"));
-   }
+  @Test
+  public void testPrintTopologyNoDatanodesJsonFormat() throws Exception {
+    // get http Address
+    String httpAddress = clusterNoDatanodes.getRandomRouter().getRouter()
+        .getHttpServerAddress().toString();
+
+    // send http request
+    URL url = new URL("http:/" + httpAddress + "/topology");
+    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+    conn.setReadTimeout(20000);
+    conn.setConnectTimeout(20000);
+    conn.setRequestProperty("Accept", "application/json");
+    conn.connect();
+    ByteArrayOutputStream out = new ByteArrayOutputStream();
+    IOUtils.copyBytes(conn.getInputStream(), out, 4096, true);
+    StringBuilder sb =
+        new StringBuilder("-- Network Topology -- \n");
+    sb.append(out);
+    sb.append("\n-- Network Topology -- ");
+    String topology = sb.toString();
+
+    // assert node number
+    assertTrue(topology.contains("No DataNodes"));
+  }
 }