svn merge -c 1452475 FIXES: YARN-448. Remove unnecessary hflush from log aggregation (Kihwal Lee via bobby)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1452477 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -344,6 +344,9 @@ 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

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 {