diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index a94d24c7a9..3ea919181d 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/hadoop-yarn-project/CHANGES.txt
@@ -362,6 +362,9 @@ Release 0.23.7 - UNRELEASED
     YARN-426. Failure to download a public resource prevents further downloads
     (Jason Lowe via bobby)
 
+    YARN-448. Remove unnecessary hflush from log aggregation (Kihwal Lee via
+    bobby)
+
 Release 0.23.6 - UNRELEASED
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/AggregatedLogFormat.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/AggregatedLogFormat.java
index 4b8dff9104..a310ab696b 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/AggregatedLogFormat.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/AggregatedLogFormat.java
@@ -231,7 +231,6 @@ public class AggregatedLogFormat {
       out = this.writer.prepareAppendValue(-1);
       out.writeInt(VERSION);
       out.close();
-      this.fsDataOStream.hflush();
     }
 
     public void writeApplicationOwner(String user) throws IOException {