diff --git a/src/main/docbkx/security.xml b/src/main/docbkx/security.xml
index 2b782cf..7af0c09 100644
--- a/src/main/docbkx/security.xml
+++ b/src/main/docbkx/security.xml
@@ -718,10 +718,13 @@ The HBase shell has been extended to provide simple commands for editing and upd
Grant
- grant <user> <permissions> [ <table> [ <column family> [ <column qualifier> ] ] ]
+ grant <user|@group> <permissions> [ <table> [ <column family> [ <column qualifier> ] ] ]
+ <user|@group> is user or group (start with character '@'), Groups are created and manipulated via the Hadoop group mapping service.
+
+
<permissions> is zero or more letters from the set "RWCA": READ('R'), WRITE('W'), CREATE('C'), ADMIN('A').
@@ -732,7 +735,7 @@ The HBase shell has been extended to provide simple commands for editing and upd
- revoke <user> [ <table> [ <column family> [ <column qualifier> ] ] ]
+ revoke <user|@group> [ <table> [ <column family> [ <column qualifier> ] ] ]
@@ -741,7 +744,7 @@ The HBase shell has been extended to provide simple commands for editing and upd
The alter command has been extended to allow ownership assignment:
- alter 'tablename', {OWNER => 'username'}
+ alter 'tablename', {OWNER => 'username|@group'}