diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 2d1375f791b..8d03b01f262 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -454,6 +454,9 @@ Release 2.6.0 - UNRELEASED
     HADOOP-9989. Bug introduced in HADOOP-9374, which parses the -tokenCacheFile 
     as binary file but set it to the configuration as JSON file. (zxu via tucu)
 
+    HADOOP-11085. Excessive logging by org.apache.hadoop.util.Progress when
+    value is NaN (Mit Desai via jlowe)
+
 Release 2.5.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Progress.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Progress.java
index e3445b5da6b..3fbc9350f17 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Progress.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Progress.java
@@ -162,27 +162,27 @@ public class Progress {
   public synchronized void set(float progress) {
     if (Float.isNaN(progress)) {
       progress = 0;
-      LOG.warn("Illegal progress value found, progress is Float.NaN. " +
+      LOG.debug("Illegal progress value found, progress is Float.NaN. " +
         "Progress will be changed to 0");
     }
     else if (progress == Float.NEGATIVE_INFINITY) {
       progress = 0;
-      LOG.warn("Illegal progress value found, progress is " +
+      LOG.debug("Illegal progress value found, progress is " +
         "Float.NEGATIVE_INFINITY. Progress will be changed to 0");
     }
     else if (progress < 0) {
       progress = 0;
-      LOG.warn("Illegal progress value found, progress is less than 0." +
+      LOG.debug("Illegal progress value found, progress is less than 0." +
         " Progress will be changed to 0");
     }
     else if (progress > 1) {
       progress = 1;
-      LOG.warn("Illegal progress value found, progress is larger than 1." +
+      LOG.debug("Illegal progress value found, progress is larger than 1." +
         " Progress will be changed to 1");
     }
     else if (progress == Float.POSITIVE_INFINITY) {
       progress = 1;
-      LOG.warn("Illegal progress value found, progress is " +
+      LOG.debug("Illegal progress value found, progress is " +
         "Float.POSITIVE_INFINITY. Progress will be changed to 1");
     }
     this.progress = progress;