MAPREDUCE-5694. Fixed MR AppMaster to shutdown the LogManager so as to avoid losing syslog in some conditions. Contributed by Mohammad Kamrul Islam.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1553879 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -258,6 +258,9 @@ Release 2.4.0 - UNRELEASED
     MAPREDUCE-5687. Fixed failure in TestYARNRunner caused by YARN-1446. (Jian He
     via vinodkv)
 
+    MAPREDUCE-5694. Fixed MR AppMaster to shutdown the LogManager so as to avoid
+    losing syslog in some conditions. (Mohammad Kamrul Islam via vinodkv)
+
 Release 2.3.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java

@@ -139,6 +139,7 @@ import org.apache.hadoop.yarn.security.client.ClientToAMTokenSecretManager;
 import org.apache.hadoop.yarn.util.Clock;
 import org.apache.hadoop.yarn.util.ConverterUtils;
 import org.apache.hadoop.yarn.util.SystemClock;
+import org.apache.log4j.LogManager;
 
 import com.google.common.annotations.VisibleForTesting;
 
@@ -1395,6 +1396,8 @@ public class MRAppMaster extends CompositeService {
     } catch (Throwable t) {
       LOG.fatal("Error starting MRAppMaster", t);
       System.exit(1);
+    } finally {
+      LogManager.shutdown();
     }
   }