diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 13e4aec2286..b9762d9b297 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -876,6 +876,9 @@ Release 2.8.0 - UNRELEASED
HDFS-9630. DistCp minor refactoring and clean up. (Kai Zheng via zhz)
+ HDFS-9415. Document dfs.cluster.administrators and
+ dfs.permissions.superusergroup. (Xiaobing Zhou via Arpit Agarwal)
+
OPTIMIZATIONS
HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
index 19c6c6e82b1..6e4c45a7180 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
@@ -414,17 +414,24 @@
dfs.permissions.superusergroup
supergroup
- The name of the group of super-users.
+ The name of the group of super-users.
+ The value should be a single group name.
+
-
dfs.namenode.acls.enabled