YARN-7379. Moving logging APIs over to slf4j in hadoop-yarn-client. Contributed by Yeliang Cang.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/AMRMClient.java

@@ -23,8 +23,6 @@
 import java.util.function.Supplier;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceAudience.Public;
@@ -48,12 +46,15 @@
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @InterfaceAudience.Public
 @InterfaceStability.Stable
 public abstract class AMRMClient<T extends AMRMClient.ContainerRequest> extends
     AbstractService {
-  private static final Log LOG = LogFactory.getLog(AMRMClient.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(AMRMClient.class);
 
   private TimelineV2Client timelineV2Client;
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/async/AMRMClientAsync.java

@@ -24,8 +24,6 @@
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Supplier;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceAudience.Public;
 import org.apache.hadoop.classification.InterfaceStability.Stable;
@@ -53,6 +51,8 @@
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * <code>AMRMClientAsync</code> handles communication with the ResourceManager
@@ -107,7 +107,8 @@
 @Stable
 public abstract class AMRMClientAsync<T extends ContainerRequest> 
 extends AbstractService {
-  private static final Log LOG = LogFactory.getLog(AMRMClientAsync.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(AMRMClientAsync.class);
   
   protected final AMRMClient<T> client;
   protected final CallbackHandler handler;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/async/impl/AMRMClientAsyncImpl.java

@@ -25,8 +25,6 @@
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
 import org.apache.hadoop.conf.Configuration;
@@ -51,13 +49,16 @@
 import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 
 import com.google.common.annotations.VisibleForTesting;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @Private
 @Unstable
 public class AMRMClientAsyncImpl<T extends ContainerRequest> 
 extends AMRMClientAsync<T> {
   
-  private static final Log LOG = LogFactory.getLog(AMRMClientAsyncImpl.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(AMRMClientAsyncImpl.class);
   
   private final HeartbeatThread heartbeatThread;
   private final CallbackHandlerThread handlerThread;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/async/impl/NMClientAsyncImpl.java

@@ -36,8 +36,6 @@
 import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
 import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
 import org.apache.hadoop.conf.Configuration;
@@ -63,12 +61,15 @@
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @Private
 @Unstable
 public class NMClientAsyncImpl extends NMClientAsync {
 
-  private static final Log LOG = LogFactory.getLog(NMClientAsyncImpl.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(NMClientAsyncImpl.class);
 
   protected static final int INITIAL_THREAD_POOL_SIZE = 10;
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/impl/AMRMClientImpl.java

@@ -34,8 +34,6 @@
 import java.util.TreeSet;
 import java.util.AbstractMap.SimpleEntry;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
 import org.apache.hadoop.conf.Configuration;
@@ -80,12 +78,15 @@
 import com.google.common.base.Joiner;
 import com.google.common.base.Preconditions;
 import org.apache.hadoop.yarn.util.resource.Resources;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @Private
 @Unstable
 public class AMRMClientImpl<T extends ContainerRequest> extends AMRMClient<T> {
 
-  private static final Log LOG = LogFactory.getLog(AMRMClientImpl.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(AMRMClientImpl.class);
   private static final List<String> ANY_LIST =
       Collections.singletonList(ResourceRequest.ANY);
   

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/impl/ContainerManagementProtocolProxy.java

@@ -25,8 +25,6 @@
 import java.util.List;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.LimitedPrivate;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.conf.Configuration;
@@ -46,6 +44,8 @@
 import org.apache.hadoop.yarn.util.ConverterUtils;
 
 import com.google.common.annotations.VisibleForTesting;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 /**
@@ -53,7 +53,8 @@
  */
 @LimitedPrivate({ "MapReduce", "YARN" })
 public class ContainerManagementProtocolProxy {
-  static final Log LOG = LogFactory.getLog(ContainerManagementProtocolProxy.class);
+  static final Logger LOG =
+          LoggerFactory.getLogger(ContainerManagementProtocolProxy.class);
 
   private final int maxConnectedNMs;
   private final Map<String, ContainerManagementProtocolProxyData> cmProxy;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/impl/NMClientImpl.java

@@ -27,8 +27,6 @@
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.atomic.AtomicBoolean;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
 import org.apache.hadoop.conf.Configuration;
@@ -56,6 +54,8 @@
 import org.apache.hadoop.yarn.client.api.impl.ContainerManagementProtocolProxy.ContainerManagementProtocolProxyData;
 import org.apache.hadoop.yarn.exceptions.YarnException;
 import org.apache.hadoop.yarn.ipc.RPCUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * <p>
@@ -85,7 +85,8 @@
 @Unstable
 public class NMClientImpl extends NMClient {
 
-  private static final Log LOG = LogFactory.getLog(NMClientImpl.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(NMClientImpl.class);
 
   // The logically coherent operations on startedContainers is synchronized to
   // ensure they are atomic

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/impl/RemoteRequestsTable.java

@@ -18,8 +18,6 @@
 
 package org.apache.hadoop.yarn.client.api.impl;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.yarn.api.records.ExecutionType;
 import org.apache.hadoop.yarn.api.records.ExecutionTypeRequest;
 import org.apache.hadoop.yarn.api.records.Priority;
@@ -36,10 +34,13 @@
 import org.apache.hadoop.yarn.api.records.ResourceRequest;
 import org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl.ResourceRequestInfo;
 import org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl.ProfileCapabilityComparator;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 class RemoteRequestsTable<T> implements Iterable<ResourceRequestInfo>{
 
-  private static final Log LOG = LogFactory.getLog(RemoteRequestsTable.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(RemoteRequestsTable.class);
 
   private ProfileCapabilityComparator resourceComparator;
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/impl/SharedCacheClientImpl.java

@@ -22,8 +22,6 @@
 import java.io.IOException;
 import java.net.InetSocketAddress;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
 import org.apache.hadoop.conf.Configuration;
@@ -46,6 +44,8 @@
 import org.apache.hadoop.yarn.util.Records;
 
 import com.google.common.annotations.VisibleForTesting;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * An implementation of the SharedCacheClient API.
@@ -53,8 +53,8 @@
 @Private
 @Unstable
 public class SharedCacheClientImpl extends SharedCacheClient {
-  private static final Log LOG = LogFactory
+  private static final Logger LOG = LoggerFactory
-      .getLog(SharedCacheClientImpl.class);
+      .getLogger(SharedCacheClientImpl.class);
 
   private ClientSCMProtocol scmClient;
   private InetSocketAddress scmAddress;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/impl/YarnClientImpl.java

@@ -29,8 +29,6 @@
 import java.util.Map;
 import java.util.Set;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
 import org.apache.hadoop.conf.Configuration;
@@ -131,12 +129,15 @@
 import org.apache.hadoop.yarn.util.timeline.TimelineUtils;
 
 import com.google.common.annotations.VisibleForTesting;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @Private
 @Unstable
 public class YarnClientImpl extends YarnClient {
 
-  private static final Log LOG = LogFactory.getLog(YarnClientImpl.class);
+  private static final Logger LOG = LoggerFactory
+          .getLogger(YarnClientImpl.class);
 
   protected ApplicationClientProtocol rmClient;
   protected long submitPollIntervalMillis;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/cli/TopCLI.java

@@ -55,8 +55,6 @@
 import org.apache.commons.lang.StringUtils;
 import org.apache.commons.lang.time.DateFormatUtils;
 import org.apache.commons.lang.time.DurationFormatUtils;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.http.HttpConfig.Policy;
 import org.apache.hadoop.security.UserGroupInformation;
@@ -78,12 +76,15 @@
 import org.apache.hadoop.yarn.webapp.util.WebAppUtils;
 import org.codehaus.jettison.json.JSONException;
 import org.codehaus.jettison.json.JSONObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class TopCLI extends YarnCLI {
 
   private static final String CLUSTER_INFO_URL = "/ws/v1/cluster/info";
 
-  private static final Log LOG = LogFactory.getLog(TopCLI.class);
+  private static final Logger LOG = LoggerFactory
+          .getLogger(TopCLI.class);
   private String CLEAR = "\u001b[2J";
   private String CLEAR_LINE = "\u001b[2K";
   private String SET_CURSOR_HOME = "\u001b[H";

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestGetGroups.java

@@ -23,8 +23,6 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.service.Service;
 import org.apache.hadoop.service.Service.STATE;
@@ -37,10 +35,13 @@
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class TestGetGroups extends GetGroupsTestBase {
   
-  private static final Log LOG = LogFactory.getLog(TestGetGroups.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(TestGetGroups.class);
   
   private static ResourceManager resourceManager;
   

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestRMFailover.java

@@ -34,8 +34,6 @@
 
 import javax.servlet.http.HttpServletResponse;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.ha.ClientBaseWithFixes;
 import org.apache.hadoop.ha.HAServiceProtocol;
@@ -64,10 +62,12 @@
 import org.junit.Test;
 
 import com.google.common.base.Supplier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class TestRMFailover extends ClientBaseWithFixes {
-  private static final Log LOG =
+  private static final Logger LOG =
-      LogFactory.getLog(TestRMFailover.class.getName());
+      LoggerFactory.getLogger(TestRMFailover.class.getName());
   private static final HAServiceProtocol.StateChangeRequestInfo req =
       new HAServiceProtocol.StateChangeRequestInfo(
           HAServiceProtocol.RequestSource.REQUEST_BY_USER);
@@ -114,7 +114,7 @@ private void verifyClientConnection() {
         client.getApplications();
         return;
       } catch (Exception e) {
-        LOG.error(e);
+        LOG.error(e.toString());
       } finally {
         client.stop();
       }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/TestResourceManagerAdministrationProtocolPBClientImpl.java

@@ -22,8 +22,6 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.service.Service;
 import org.apache.hadoop.service.Service.STATE;
@@ -53,6 +51,8 @@
 import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import static org.junit.Assert.*;
 
@@ -61,8 +61,8 @@
  */
 public class TestResourceManagerAdministrationProtocolPBClientImpl {
   private static ResourceManager resourceManager;
-  private static final Log LOG = LogFactory
+  private static final Logger LOG = LoggerFactory
-          .getLog(TestResourceManagerAdministrationProtocolPBClientImpl.class);
+          .getLogger(TestResourceManagerAdministrationProtocolPBClientImpl.class);
   private final RecordFactory recordFactory = RecordFactoryProvider
           .getRecordFactory(null);
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/api/async/impl/TestAMRMClientAsync.java

@@ -36,8 +36,6 @@
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Supplier;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.yarn.api.protocolrecords.AllocateResponse;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
@@ -62,11 +60,14 @@
 import org.junit.Test;
 import org.mockito.invocation.InvocationOnMock;
 import org.mockito.stubbing.Answer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 public class TestAMRMClientAsync {
 
-  private static final Log LOG = LogFactory.getLog(TestAMRMClientAsync.class);
+  private static final Logger LOG =
+          LoggerFactory.getLogger(TestAMRMClientAsync.class);
   
   @SuppressWarnings("unchecked")
   @Test(timeout=10000)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/api/impl/AMRMTokenIdentifierForTest.java

@@ -24,8 +24,6 @@
 import java.io.IOException;
 
 import org.apache.commons.io.IOUtils;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
@@ -36,10 +34,13 @@
 import org.apache.hadoop.yarn.security.AMRMTokenIdentifier;
 
 import com.google.protobuf.TextFormat;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class AMRMTokenIdentifierForTest extends AMRMTokenIdentifier {
 
-  private static Log LOG = LogFactory.getLog(AMRMTokenIdentifierForTest.class);
+  private static Logger LOG =
+          LoggerFactory.getLogger(AMRMTokenIdentifierForTest.class);
 
   public static final Text KIND = new Text("YARN_AM_RM_TOKEN");
   

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/api/impl/TestAMRMProxy.java

@@ -21,8 +21,6 @@
 import java.io.IOException;
 import java.util.ArrayList;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.yarn.api.ApplicationMasterProtocol;
@@ -47,13 +45,16 @@
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairSchedulerConfiguration;
 import org.junit.Assert;
 import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * End-to-End test cases for the AMRMProxy Service.
  */
 public class TestAMRMProxy extends BaseAMRMProxyE2ETest {
 
-  private static final Log LOG = LogFactory.getLog(TestAMRMProxy.class);
+  private static final Logger LOG = LoggerFactory
+          .getLogger(TestAMRMProxy.class);
 
   /*
    * This test validates register, allocate and finish of an application through

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/api/impl/TestNMClient.java

@@ -34,8 +34,6 @@
 import java.util.Set;
 import java.util.TreeSet;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.DataOutputBuffer;
 import org.apache.hadoop.security.Credentials;
@@ -83,6 +81,8 @@
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class TestNMClient {
   Configuration conf = null;
@@ -102,8 +102,8 @@ public class TestNMClient {
   public static class DebugSumContainerStateListener
       implements ContainerStateTransitionListener {
 
-    private static final Log LOG =
+    private static final Logger LOG =
-        LogFactory.getLog(DebugSumContainerStateListener.class);
+        LoggerFactory.getLogger(DebugSumContainerStateListener.class);
     private static final Map<ContainerId,
         Map<org.apache.hadoop.yarn.server.nodemanager.containermanager
             .container.ContainerState, Long>>

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/api/impl/TestSharedCacheClientImpl.java

@@ -28,8 +28,6 @@
 import java.io.FileNotFoundException;
 import java.io.IOException;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -46,11 +44,13 @@
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class TestSharedCacheClientImpl {
 
-  private static final Log LOG = LogFactory
+  private static final Logger LOG = LoggerFactory
-      .getLog(TestSharedCacheClientImpl.class);
+      .getLogger(TestSharedCacheClientImpl.class);
 
   public static SharedCacheClientImpl client;
   public static ClientSCMProtocol cProtocol;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/api/impl/TestYarnClient.java

@@ -129,13 +129,11 @@
 import org.apache.hadoop.yarn.util.Clock;
 import org.apache.hadoop.yarn.util.Records;
 import org.apache.hadoop.yarn.util.UTCClock;
-import org.apache.log4j.Level;
-import org.apache.log4j.LogManager;
-import org.apache.log4j.Logger;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.ArgumentCaptor;
+import org.slf4j.event.Level;
 
 public class TestYarnClient {
 
@@ -421,8 +419,7 @@ public void testKillApplication() throws Exception {
 
   @Test(timeout = 30000)
   public void testApplicationType() throws Exception {
-    Logger rootLogger = LogManager.getRootLogger();
+    GenericTestUtils.setRootLogLevel(Level.DEBUG);
-    rootLogger.setLevel(Level.DEBUG);
     MockRM rm = new MockRM();
     rm.start();
     RMApp app = rm.submitApp(2000);
@@ -437,8 +434,7 @@ public void testApplicationType() throws Exception {
 
   @Test(timeout = 30000)
   public void testApplicationTypeLimit() throws Exception {
-    Logger rootLogger = LogManager.getRootLogger();
+    GenericTestUtils.setRootLogLevel(Level.DEBUG);
-    rootLogger.setLevel(Level.DEBUG);
     MockRM rm = new MockRM();
     rm.start();
     RMApp app1 =