MAPREDUCE-6571. JobEndNotification info logs are missing in AM container syslog (haibochen via rkanter)

(cherry picked from commit 6b4a9970f187ab399adf7469e494a530f08993b5)

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

@@ -148,7 +148,6 @@ import org.apache.hadoop.yarn.security.AMRMTokenIdentifier;
 import org.apache.hadoop.yarn.security.client.ClientToAMTokenSecretManager;
 import org.apache.hadoop.yarn.util.Clock;
 import org.apache.hadoop.yarn.util.SystemClock;
-import org.apache.log4j.LogManager;
 
 import com.google.common.annotations.VisibleForTesting;
 
@@ -1241,14 +1240,9 @@ public class MRAppMaster extends CompositeService {
     }
   }
 
-  protected void shutdownTaskLog() {
-    TaskLog.syncLogsShutdown(logSyncer);
-  }
-
   @Override
   public void stop() {
     super.stop();
-    shutdownTaskLog();
   }
 
   private boolean isRecoverySupported() throws IOException {
@@ -1788,14 +1782,9 @@ public class MRAppMaster extends CompositeService {
     T call(Configuration conf) throws Exception;
   }
 
-  protected void shutdownLogManager() {
-    LogManager.shutdown();
-  }
-
   @Override
   protected void serviceStop() throws Exception {
     super.serviceStop();
-    shutdownLogManager();
   }
 
   public ClientService getClientService() {

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/MRApp.java

@@ -814,19 +814,5 @@ public class MRApp extends MRAppMaster {
     return token.decodeIdentifier();
   }
 
-  @Override
-  protected void shutdownTaskLog() {
-    // Avoid closing the logging system during unit tests,
-    // otherwise subsequent MRApp instances in the same test
-    // will fail to log anything.
-  }
-
-  @Override
-  protected void shutdownLogManager() {
-    // Avoid closing the logging system during unit tests,
-    // otherwise subsequent MRApp instances in the same test
-    // will fail to log anything.
-  }
-
 }