diff --git a/CHANGES.txt b/CHANGES.txt
index c66e55a3fe..c3cd8d6945 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -9,6 +9,8 @@ Trunk (unreleased changes)
 
   BUG FIXES
 
+    HADOOP-6764. Remove verbose logging from the Groups class. (Boris Shkolnik)
+
     HADOOP-6730. Bug in FileContext#copy and provide base class for FileContext 
     tests. (Ravi Phulari via jghoman)
 
diff --git a/src/java/org/apache/hadoop/security/Groups.java b/src/java/org/apache/hadoop/security/Groups.java
index 1f3c88b990..6f400674a2 100644
--- a/src/java/org/apache/hadoop/security/Groups.java
+++ b/src/java/org/apache/hadoop/security/Groups.java
@@ -57,8 +57,9 @@ public class Groups {
     cacheTimeout = 
       conf.getLong(CommonConfigurationKeys.HADOOP_SECURITY_GROUPS_CACHE_SECS, 5*60) * 1000;
     
-    LOG.info("Group mapping impl=" + impl.getClass().getName() + 
-        "; cacheTimeout=" + cacheTimeout);
+    if(LOG.isDebugEnabled())
+      LOG.debug("Group mapping impl=" + impl.getClass().getName() + 
+          "; cacheTimeout=" + cacheTimeout);
   }
   
   /**