diff --git a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/KerberosName.java b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/KerberosName.java
index 9564026937..6ff30f7890 100644
--- a/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/KerberosName.java
+++ b/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/KerberosName.java
@@ -84,7 +84,7 @@ public class KerberosName {
     try {
       defaultRealm = KerberosUtil.getDefaultRealm();
     } catch (Exception ke) {
-        LOG.warn("Kerberos krb5 configuration not found, setting default realm to empty");
+        LOG.debug("Kerberos krb5 configuration not found, setting default realm to empty");
         defaultRealm="";
     }
   }
diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index ee4a03348d..c81de3eeb2 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -173,6 +173,8 @@ Release 2.0.1-alpha - UNRELEASED
 
     HADOOP-8316. Audit logging should be disabled by default. (eli)
 
+    HADOOP-8400. All commands warn "Kerberos krb5 configuration not found" when security is not enabled. (tucu)
+
 Release 2.0.0-alpha - UNRELEASED
 
   INCOMPATIBLE CHANGES