code style fix

Author: yuyanlei-8130

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java

@@ -2957,7 +2957,10 @@ public boolean processReport(final DatanodeID nodeID,
     return !node.hasStaleStorages();
   }
 
-  // Remove the DN lease only when we have received block reports for all storages for a particular DN.
+  /**
+   * Remove the DN lease only when we have received block reports 
+   * for all storages for a particular DN.
+   */
   void removeDNLeaseIfNeeded(DatanodeDescriptor node) {
     boolean needRemoveLease = true;
     for (DatanodeStorageInfo sInfo : node.getStorageInfos()) {

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockReportLease.java

@@ -324,7 +324,8 @@ public void testFirstIncompleteBlockReport() throws Exception {
         datanodeStorages[i] = storages[i].getStorage();
         StorageBlockReport[] reports = createReports(datanodeStorages, 100);
 
-        // The first multiple send once, simulating the failure of the first report, only send successfully once
+        // The first multiple send once, simulating the failure of the first report, 
+        // only send successfully once
         if(i == 0){
           rpcServer.blockReport(dnRegistration, poolId, reports, brContext);
         }