HDFS-1146. Javadoc for getDelegationTokenSecretManager in FSNamesystem (jnp via boryas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/hdfs/trunk@950771 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -9,6 +9,8 @@ Trunk (unreleased changes)
 
   IMPROVEMENTS
 
+    HDFS-1146. Javadoc for getDelegationTokenSecretManager in FSNamesystem (jnp via boryas)
+
     HDFS-1132. Refactor TestFileStatus (Eli Collins via cos)
 
     HDFS-1163. normalize property names for JT/NN kerberos principal 

src/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java

@@ -4486,6 +4486,10 @@ public class FSNamesystem implements FSConstants, FSNamesystemMBean, FSClusterSt
         DELEGATION_TOKEN_REMOVER_SCAN_INTERVAL, this);
   }
 
+  /**
+   * Returns the DelegationTokenSecretManager instance in the namesystem.
+   * @return delegation token secret manager object
+   */
   public DelegationTokenSecretManager getDelegationTokenSecretManager() {
     return dtSecretManager;
   }