diff --git a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
index a37e7436c8703..9861b9799320f 100644
--- a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
@@ -40,7 +40,6 @@
 import static org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.isExpectedClass;
 import static org.apache.hadoop.hdfs.server.federation.router.async.AsyncUtil.asyncApply;
 import static org.apache.hadoop.hdfs.server.federation.router.async.AsyncUtil.asyncCatch;
-import static org.apache.hadoop.hdfs.server.federation.router.async.AsyncUtil.asyncComplete;
 import static org.apache.hadoop.hdfs.server.federation.router.async.AsyncUtil.asyncForEach;
 import static org.apache.hadoop.hdfs.server.federation.router.async.AsyncUtil.asyncReturn;
 import static org.apache.hadoop.hdfs.server.federation.router.async.AsyncUtil.asyncTry;
diff --git a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterAsyncStoragePolicy.java b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterAsyncStoragePolicy.java
index a1bc639617eac..9de314a0777cc 100644
--- a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterAsyncStoragePolicy.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterAsyncStoragePolicy.java
@@ -144,7 +144,8 @@ public void tearDown() throws IOException {
 
   @Test
   public void testRouterAsyncStoragePolicy() throws Exception {
-    BlockStoragePolicy[] storagePolicies = cluster.getNamenodes().get(0).getClient().getStoragePolicies();
+    BlockStoragePolicy[] storagePolicies = cluster.getNamenodes().get(0)
+        .getClient().getStoragePolicies();
     asyncStoragePolicy.getStoragePolicies();
     BlockStoragePolicy[] storagePoliciesAsync = syncReturn(BlockStoragePolicy[].class);
     assertArrayEquals(storagePolicies, storagePoliciesAsync);