diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index acc623a94c..a31c9fa136 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -772,6 +772,9 @@ Release 2.4.0 - UNRELEASED
     HDFS-5579. Under construction files make DataNode decommission take very long
     hours. (zhaoyunjiong via jing9)
 
+    HDFS-5794. Fix the inconsistency of layout version number of 
+    ADD_DATANODE_AND_STORAGE_UUIDS between trunk and branch-2. (jing9)
+
   BREAKDOWN OF HDFS-2832 SUBTASKS AND RELATED JIRAS
 
     HDFS-4985. Add storage type to the protocol and expose it in block report
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutVersion.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutVersion.java
index b80ce6f9cd..923ed70ac8 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutVersion.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutVersion.java
@@ -109,10 +109,10 @@ public static enum Feature {
         + "enable rebuilding retry cache in case of HA failover"),
     EDITLOG_ADD_BLOCK(-48, "Add new editlog that only records allocation of "
         + "the new block instead of the entire block list"),
-    CACHING(-49, "Support for cache pools and path-based caching"),
-    ADD_DATANODE_AND_STORAGE_UUIDS(-50, "Replace StorageID with DatanodeUuid."
+    ADD_DATANODE_AND_STORAGE_UUIDS(-49, "Replace StorageID with DatanodeUuid."
         + " Use distinct StorageUuid per storage directory."),
-    ADD_LAYOUT_FLAGS(-51, "Add support for layout flags.");
+    ADD_LAYOUT_FLAGS(-50, "Add support for layout flags."),
+    CACHING(-51, "Support for cache pools and path-based caching");
 
     final int lv;
     final int ancestorLV;