From 1aad99a71813660b83628cacfed393d0b3a123cc Mon Sep 17 00:00:00 2001
From: Akira Ajisaka <aajisaka@apache.org>
Date: Tue, 27 Nov 2018 20:01:11 +0900
Subject: [PATCH] MAPREDUCE-7162. TestEvents#testEvents fails. Contributed by
 Zhaohui Xin.

---
 .../java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java
index b07c6762f7..02ec53e559 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java
@@ -94,6 +94,7 @@ synchronized void write(HistoryEvent event) throws IOException {
     wrapper.setEvent(event.getDatum());
     writer.write(wrapper, encoder);
     if (this.jsonOutput) {
+      encoder.flush();
       out.writeBytes("\n");
     }
   }