diff --git a/CHANGES.txt b/CHANGES.txt
index 254a4e31494..1c8c4ae948c 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -116,6 +116,7 @@ Release 0.20.0 - Unreleased
    HBASE-1344  WARN IllegalStateException: Cannot set a region as open if it has
                not been pending
    HBASE-1386  NPE in housekeeping
+   HBASE-????  Remove unused sequencefile and mapfile config. from hbase-default.xml
 
   IMPROVEMENTS
    HBASE-1089  Add count of regions on filesystem to master UI; add percentage
diff --git a/conf/hbase-default.xml b/conf/hbase-default.xml
index 959d762a9cc..2f3744dfd7c 100644
--- a/conf/hbase-default.xml
+++ b/conf/hbase-default.xml
@@ -336,17 +336,6 @@
     Default is 10% slop.
     </description>
   </property>
-  <property>
-    <name>hbase.io.index.interval</name>
-    <value>128</value>
-    <description>The interval at which we record offsets in hbase
-    store files/mapfiles.  Default for stock mapfiles is 128.  Index
-    files are read into memory.  If there are many of them, could prove
-    a burden.  If so play with the hadoop io.map.index.skip property and
-    skip every nth index member when reading back the index into memory.
-    Downside to high index interval is lowered access times.
-    </description>
-  </property>
   <property>
     <name>hfile.min.blocksize.size</name>
     <value>65536</value>
@@ -355,29 +344,6 @@
     if you have small cells and want faster random-access of individual cells.
     </description>
   </property>
-  <property>
-    <name>hfile.min.blocksize.size</name>
-    <value>65536</value>
-    <description>Minimum store file block size.  The smaller you make this, the
-    bigger your index and the less you fetch on a random-access.  Set size down
-    if you have small cells and want faster random-access of individual cells.
-    </description>
-  </property>
-  <property>
-    <name>hfile.min.blocksize.size</name>
-    <value>65536</value>
-    <description>Minimum store file block size.  The smaller you make this, the
-    bigger your index and the less you fetch on a random-access.  Set size down
-    if you have small cells and want faster random-access of individual cells.
-    </description>
-  </property>
-  <property>
-    <name>hbase.io.seqfile.compression.type</name>
-    <value>NONE</value>
-    <description>The compression type for hbase sequencefile.Writers
-    such as hlog.
-    </description>
-  </property>
   <property>
     <name>hbase.hstore.blockCache.blockSize</name>
     <value>16384</value>