diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 6aa7b1c3837..93ff5aaf060 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -27,6 +27,9 @@ 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
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ClusterJspHelper.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ClusterJspHelper.java
index b0ab1b7c1fd..e2e71e40065 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ClusterJspHelper.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ClusterJspHelper.java
@@ -587,6 +587,8 @@ public void toXML(XMLOutputter doc) throws IOException {
         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));