Update NameNodeResourceChecker.java

Author: Likkey

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

@@ -176,14 +176,16 @@ private void addDirToCheck(URI directoryToCheck, boolean required)
   public boolean hasAvailableDiskSpace() {
     try {
       if (minimumRedundantVolumes > volumes.size()){
-        throw new IllegalArgumentException(DFSConfigKeys.DFS_NAMENODE_CHECKED_VOLUMES_MINIMUM_KEY +
-        " is " + minimumRedundantVolumes +
-        " which is greater than the total number of existing storage volumes " + volumes.size());
+        throw new IllegalArgumentException("The value of "
+        + DFSConfigKeys.DFS_NAMENODE_CHECKED_VOLUMES_MINIMUM_KEY
+        + " is " + minimumRedundantVolumes
+        + " which is greater than the total number of existing storage volumes "
+        + volumes.size() + " .");
       }
     } catch (IllegalArgumentException e){
-      LOG.warn(DFSConfigKeys.DFS_NAMENODE_CHECKED_VOLUMES_MINIMUM_KEY +
-      " is greater than the total number of existing storage volumes" +
-      " and will result in adding resources and still not being able to turn off safe mode.", e);
+      LOG.warn("The value of " + DFSConfigKeys.DFS_NAMENODE_CHECKED_VOLUMES_MINIMUM_KEY
+      + " is greater than the total number of existing storage volumes"
+      + " and will result in adding resources and still not being able to turn off safe mode.", e);
     }
     return NameNodeResourcePolicy.areResourcesAvailable(volumes.values(),
         minimumRedundantVolumes);