diff --git a/CHANGES.txt b/CHANGES.txt
index 19685a38139..fd2c766cc75 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -27,6 +27,9 @@ Trunk (unreleased changes)
     HADOOP-6204. Implementing aspects development and fault injeciton
     framework for Hadoop (cos)
 
+    HADOOP-6312. Remove unnecessary debug logging in Configuration constructor.
+    (Aaron Kimball via cdouglas)
+
   OPTIMIZATIONS
 
   BUG FIXES
diff --git a/src/java/org/apache/hadoop/conf/Configuration.java b/src/java/org/apache/hadoop/conf/Configuration.java
index 642017a769a..e1b3be4f7b1 100644
--- a/src/java/org/apache/hadoop/conf/Configuration.java
+++ b/src/java/org/apache/hadoop/conf/Configuration.java
@@ -383,9 +383,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
    */
   public Configuration(boolean loadDefaults) {
     this.loadDefaults = loadDefaults;
-    if (LOG.isDebugEnabled()) {
-      LOG.debug(StringUtils.stringifyException(new IOException("config()")));
-    }
     synchronized(Configuration.class) {
       REGISTRY.put(this, null);
     }
@@ -415,11 +412,6 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
    */
   @SuppressWarnings("unchecked")
   public Configuration(Configuration other) {
-    if (LOG.isDebugEnabled()) {
-      LOG.debug(StringUtils.stringifyException
-                (new IOException("config(config)")));
-    }
-   
    this.resources = (ArrayList)other.resources.clone();
    synchronized(other) {
      if (other.properties != null) {