diff --git a/CHANGES.txt b/CHANGES.txt
index 147501e93f9..6808beb48fc 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -57,6 +57,7 @@ Release 0.92.0 - Unreleased
    HBASE-4247  Add isAborted method to the Abortable interface
                (Akash Ashok)
    HBASE-4503  Purge deprecated HBaseClusterTestCase
+   HBASE-4374  Up default regions size from 256M to 1G
 
   BUG FIXES
    HBASE-3280  YouAreDeadException being swallowed in HRS getMaster
diff --git a/src/main/resources/hbase-default.xml b/src/main/resources/hbase-default.xml
index 03b3e7e4e10..3785533f3d8 100644
--- a/src/main/resources/hbase-default.xml
+++ b/src/main/resources/hbase-default.xml
@@ -326,7 +326,7 @@
   </property>
   <property>
     <name>hbase.hregion.memstore.flush.size</name>
-    <value>67108864</value>
+    <value>134217728</value>
     <description>
     Memstore will be flushed to disk if size of the memstore
     exceeds this number of bytes.  Value is checked by a thread that runs
@@ -372,11 +372,11 @@
   </property>
   <property>
     <name>hbase.hregion.max.filesize</name>
-    <value>268435456</value>
+    <value>1073741824</value>
     <description>
     Maximum HStoreFile size. If any one of a column families' HStoreFiles has
     grown to exceed this value, the hosting HRegion is split in two.
-    Default: 256M.
+    Default: 1G.
     </description>
   </property>
   <property>