diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 73a9643d091..b8462ac8b02 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -433,6 +433,8 @@ Release 2.4.0 - UNRELEASED
     HDFS-5780. TestRBWBlockInvalidation times out intemittently. (Mit Desai
     via kihwal)
 
+    HDFS-5803. TestBalancer.testBalancer0 fails. (Chen He via kihwal)
+
   BREAKDOWN OF HDFS-5698 SUBTASKS AND RELATED JIRAS
 
     HDFS-5717. Save FSImage header in protobuf. (Haohui Mai via jing9)
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
index f78eec13b25..653fa79cc85 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
@@ -74,7 +74,7 @@ public class TestBalancer {
 
   ClientProtocol client;
 
-  static final long TIMEOUT = 20000L; //msec
+  static final long TIMEOUT = 40000L; //msec
   static final double CAPACITY_ALLOWED_VARIANCE = 0.005;  // 0.5%
   static final double BALANCE_ALLOWED_VARIANCE = 0.11;    // 10%+delta
   static final int DEFAULT_BLOCK_SIZE = 10;