diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDirectoryScanner.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDirectoryScanner.java
index eedd67c36ca..bd99b072c77 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDirectoryScanner.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDirectoryScanner.java
@@ -560,7 +560,7 @@ public void runTest(int parallelism) throws Exception {
    *
    * @throws Exception thrown on unexpected failure
    */
-  @Test (timeout=300000)
+  @Test (timeout=600000)
   public void testThrottling() throws Exception {
     Configuration conf = new Configuration(CONF);