diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 5e7506e3903..d9a678f166f 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -403,6 +403,8 @@ Release 2.0.3-alpha - Unreleased
     HDFS-4074. Remove the unused default constructor from INode.  (Brandon Li
     via szetszwo)
 
+    HDFS-4053. Increase the default block size. (eli)
+
   OPTIMIZATIONS
 
   BUG FIXES
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
index ba8f733695d..9ea1ec5b526 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
@@ -31,7 +31,7 @@ import org.apache.hadoop.fs.CommonConfigurationKeys;
 public class DFSConfigKeys extends CommonConfigurationKeys {
 
   public static final String  DFS_BLOCK_SIZE_KEY = "dfs.blocksize";
-  public static final long    DFS_BLOCK_SIZE_DEFAULT = 64*1024*1024;
+  public static final long    DFS_BLOCK_SIZE_DEFAULT = 128*1024*1024;
   public static final String  DFS_REPLICATION_KEY = "dfs.replication";
   public static final short   DFS_REPLICATION_DEFAULT = 3;
   public static final String  DFS_STREAM_BUFFER_SIZE_KEY = "dfs.stream-buffer-size";
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
index 59341b40575..13dad672a2c 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
@@ -358,7 +358,7 @@
 
 <property>
   <name>dfs.blocksize</name>
-  <value>67108864</value>
+  <value>134217728</value>
   <description>
       The default block size for new files, in bytes.
       You can use the following suffix (case insensitive):