From a3cff8776a2091e5bedfd178942d3525597e567a Mon Sep 17 00:00:00 2001
From: He Xiaoqiao <hexiaoqiao@apache.org>
Date: Wed, 7 Apr 2021 12:18:23 +0800
Subject: [PATCH] HADOOP-17613. Log not flushed fully when daemon shutdown.
 Contributed by Renukaprasad C.

---
 .../src/main/java/org/apache/hadoop/util/StringUtils.java       | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
index 9e7b36f71e..4fe09a9ed7 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
@@ -41,6 +41,7 @@
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.net.NetUtils;
+import org.apache.log4j.LogManager;
 
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.net.InetAddresses;
@@ -752,6 +753,7 @@ static void startupShutdownMessage(Class<?> clazz, String[] args,
         public void run() {
           LOG.info(toStartupShutdownString("SHUTDOWN_MSG: ", new String[]{
             "Shutting down " + classname + " at " + hostname}));
+          LogManager.shutdown();
         }
       }, SHUTDOWN_HOOK_PRIORITY);