diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 616842fa5f..d4962766be 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -516,6 +516,9 @@ Release 2.7.0 - UNRELEASED
     HADOOP-11343. Overflow is not properly handled in caclulating final iv for
     AES CTR. (Jerry Chen via wang)
 
+    HADOOP-11354. ThrottledInputStream doesn't perform effective throttling.
+    (Ted Yu via jing9)
+
 Release 2.6.0 - 2014-11-18
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/ThrottledInputStream.java b/hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/ThrottledInputStream.java
index f6fe11847a..d08a3012e2 100644
--- a/hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/ThrottledInputStream.java
+++ b/hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/ThrottledInputStream.java
@@ -115,7 +115,7 @@ public int read(long position, byte[] buffer, int offset, int length)
   }
 
   private void throttle() throws IOException {
-    if (getBytesPerSec() > maxBytesPerSec) {
+    while (getBytesPerSec() > maxBytesPerSec) {
       try {
         Thread.sleep(SLEEP_DURATION_MS);
         totalSleepTime += SLEEP_DURATION_MS;