HDFS-5929. Add blockpool % usage to HDFS federated nn page. Contributed by Siqi Li.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1567411 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -365,6 +365,9 @@ Release 2.4.0 - UNRELEASED
 
     HDFS-4370. Fix typo Blanacer in DataNode. (Chu Tong via shv)
 
+    HDFS-5929. Add blockpool % usage to HDFS federated nn page.
+    (Siqi Li via suresh)
+
   OPTIMIZATIONS
 
     HDFS-5790. LeaseManager.findPath is very slow when many leases need recovery

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

@@ -587,6 +587,8 @@ class ClusterJspHelper {
         toXmlItemBlockWithLink(doc, nn.host, nn.httpAddress, "NameNode");
         toXmlItemBlock(doc, "Blockpool Used",
             StringUtils.byteDesc(nn.bpUsed));
+        toXmlItemBlock(doc, "Blockpool Used%",
+            DFSUtil.percent2String(DFSUtil.getPercentUsed(nn.bpUsed, total)));
         toXmlItemBlock(doc, "Files And Directories",
             Long.toString(nn.filesAndDirectories));
         toXmlItemBlock(doc, "Blocks", Long.toString(nn.blocksCount));