diff --git a/src/main/docbkx/schema_design.xml b/src/main/docbkx/schema_design.xml
index 65e64b0..e4632ec 100644
--- a/src/main/docbkx/schema_design.xml
+++ b/src/main/docbkx/schema_design.xml
@@ -509,6 +509,21 @@ public static byte[][] getHexSplits(String startKey, String endKey, int numRegio
See HColumnDescriptor for more information.
+ Recent versions of HBase also support setting time to live on a per cell basis. See HBASE-10560 for more
+ information. Cell TTLs are submitted as an attribute on mutation requests (Appends,
+ Increments, Puts, etc.) using Mutation#setTTL. If the TTL attribute is set, it will be applied
+ to all cells updated on the server by the operation. There are two notable differences
+ between cell TTL handling and ColumnFamily TTLs:
+
+
+ Cell TTLs are expressed in units of milliseconds instead of seconds.
+
+
+ A cell TTLs cannot extend the effective lifetime of a cell beyond a ColumnFamily level
+ TTL setting.
+
+