diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index d5f6ce0c4e4..7f0ddd893f1 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/hadoop-yarn-project/CHANGES.txt
@@ -156,6 +156,9 @@ Release 2.8.0 - UNRELEASED
     YARN-3457. NPE when NodeManager.serviceInit fails and stopRecoveryStore called.
     (Bibin A Chundatt via ozawa)
 
+    YARN-3459. Fix failiure of TestLog4jWarningErrorMetricsAppender.
+    (Varun Vasudev via wangda)
+
 Release 2.7.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestLog4jWarningErrorMetricsAppender.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestLog4jWarningErrorMetricsAppender.java
index 61d4c4c9f99..e788e80660f 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestLog4jWarningErrorMetricsAppender.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestLog4jWarningErrorMetricsAppender.java
@@ -84,7 +84,7 @@ public void testPurge() throws Exception {
     Assert.assertEquals(1, appender.getErrorCounts(cutoff).get(0).longValue());
     Assert.assertEquals(1, appender.getErrorMessagesAndCounts(cutoff).get(0)
       .size());
-    Thread.sleep(2000);
+    Thread.sleep(3000);
     Assert.assertEquals(1, appender.getErrorCounts(cutoff).size());
     Assert.assertEquals(0, appender.getErrorCounts(cutoff).get(0).longValue());
     Assert.assertEquals(0, appender.getErrorMessagesAndCounts(cutoff).get(0)