diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 7a71ca2f718..86d30492f4a 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -177,6 +177,8 @@ Release 2.0.1-alpha - UNRELEASED
     (Henry Robinson via atm)
 
     HDFS-3514. Add missing TestParallelLocalRead. (Henry Robinson via atm)
+
+    HDFS-3243. TestParallelRead timing out on jenkins. (Henry Robinson via todd)
     
   BREAKDOWN OF HDFS-3042 SUBTASKS
 
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestParallelReadUtil.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestParallelReadUtil.java
index 0a0fc67343a..8e218d637ab 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestParallelReadUtil.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestParallelReadUtil.java
@@ -179,7 +179,7 @@ public int pRead(DFSInputStream dis, byte[] target, int startOff, int len)
    */
   static class ReadWorker extends Thread {
 
-    static public final int N_ITERATIONS = 1024 * 4;
+    static public final int N_ITERATIONS = 1024;
 
     private static final double PROPORTION_NON_POSITIONAL_READ = 0.10;