diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
index c772d8fe38..20ea7c79cf 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
@@ -1082,7 +1082,7 @@ public class DataNode extends ReconfigurableBase
     }
 
     // Is the user a member of the super group?
-    List<String> groups = Arrays.asList(callerUgi.getGroupNames());
+    List<String> groups = callerUgi.getGroups();
     if (groups.contains(supergroup)) {
       return;
     }