HADOOP-14587. Use GenericTestUtils.setLogLevel when available in hadoop-common. Contributed by Wenxin He.

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/FileContextCreateMkdirBaseTest.java

@@ -20,7 +20,6 @@ package org.apache.hadoop.fs;
 
 import java.io.IOException;
 
-import org.apache.log4j.Level;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
@@ -30,6 +29,7 @@ import static org.apache.hadoop.fs.contract.ContractTestUtils.assertIsDirectory;
 import static org.apache.hadoop.fs.contract.ContractTestUtils.assertIsFile;
 
 import org.apache.hadoop.test.GenericTestUtils;
+import org.slf4j.event.Level;
 
 /**
  * <p>

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/FileContextPermissionBase.java

@@ -23,6 +23,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.StringTokenizer;
 
+import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.Assert;
 
 import org.apache.hadoop.fs.permission.FsPermission;
@@ -32,6 +33,7 @@ import org.apache.hadoop.util.StringUtils;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
+import org.slf4j.event.Level;
 
 import static org.apache.hadoop.fs.FileContextTestHelper.*;
 import static org.apache.hadoop.test.PlatformAssumptions.assumeNotWindows;
@@ -61,8 +63,7 @@ public abstract class FileContextPermissionBase {
   
   {
     try {
-      ((org.apache.commons.logging.impl.Log4JLogger)FileSystem.LOG).getLogger()
-      .setLevel(org.apache.log4j.Level.DEBUG);
+      GenericTestUtils.setLogLevel(FileSystem.LOG, Level.DEBUG);
     }
     catch(Exception e) {
       System.out.println("Cannot change log level\n"

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/FileContextUtilBase.java

@@ -23,10 +23,12 @@ import static org.junit.Assert.assertTrue;
 
 import java.util.Arrays;
 
+import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.util.StringUtils;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
+import org.slf4j.event.Level;
 
 /**
  * <p>
@@ -48,8 +50,7 @@ public abstract class FileContextUtilBase {
   
   {
     try {
-      ((org.apache.commons.logging.impl.Log4JLogger)FileSystem.LOG).getLogger()
-      .setLevel(org.apache.log4j.Level.DEBUG);
+      GenericTestUtils.setLogLevel(FileSystem.LOG, Level.DEBUG);
     } catch(Exception e) {
       System.out.println("Cannot change log level\n"
           + StringUtils.stringifyException(e));

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestListFiles.java

@@ -24,18 +24,18 @@ import java.util.Set;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.test.GenericTestUtils;
-import org.apache.log4j.Level;
 
 import static org.junit.Assert.*;
 import org.junit.Test;
 import org.junit.BeforeClass;
+import org.slf4j.event.Level;
 
 /**
  * This class tests the FileStatus API.
  */
 public class TestListFiles {
   static {
-    GenericTestUtils.setLogLevel(FileSystem.LOG, Level.ALL);
+    GenericTestUtils.setLogLevel(FileSystem.LOG, Level.TRACE);
   }
 
   static final long seed = 0xDEADBEEFL;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestLocalFileSystemPermission.java

@@ -21,10 +21,10 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.util.Shell;
-import org.apache.log4j.Level;
 import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.slf4j.event.Level;
 
 import java.io.IOException;
 import java.util.ArrayList;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/TestActiveStandbyElectorRealZK.java

@@ -24,12 +24,11 @@ import static org.junit.Assert.assertTrue;
 import java.util.Collections;
 import java.util.UUID;
 
-import org.apache.commons.logging.impl.Log4JLogger;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.ha.ActiveStandbyElector.ActiveStandbyElectorCallback;
 import org.apache.hadoop.ha.ActiveStandbyElector.State;
+import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.util.ZKUtil.ZKAuthInfo;
-import org.apache.log4j.Level;
 import org.apache.zookeeper.CreateMode;
 import org.apache.zookeeper.ZooDefs.Ids;
 import org.apache.zookeeper.ZooKeeper;
@@ -39,6 +38,7 @@ import org.mockito.AdditionalMatchers;
 import org.mockito.Mockito;
 
 import com.google.common.primitives.Ints;
+import org.slf4j.event.Level;
 
 /**
  * Test for {@link ActiveStandbyElector} using real zookeeper.
@@ -47,8 +47,7 @@ public class TestActiveStandbyElectorRealZK extends ClientBaseWithFixes {
   static final int NUM_ELECTORS = 2;
   
   static {
-    ((Log4JLogger)ActiveStandbyElector.LOG).getLogger().setLevel(
-        Level.ALL);
+    GenericTestUtils.setLogLevel(ActiveStandbyElector.LOG, Level.TRACE);
   }
   
   static final String PARENT_DIR = "/" + UUID.randomUUID();

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/TestSshFenceByTcpPort.java

@@ -21,18 +21,18 @@ import static org.junit.Assert.*;
 
 import java.net.InetSocketAddress;
 
-import org.apache.commons.logging.impl.Log4JLogger;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
 import org.apache.hadoop.ha.SshFenceByTcpPort.Args;
-import org.apache.log4j.Level;
+import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.Assume;
 import org.junit.Test;
+import org.slf4j.event.Level;
 
 public class TestSshFenceByTcpPort {
 
   static {
-    ((Log4JLogger)SshFenceByTcpPort.LOG).getLogger().setLevel(Level.ALL);
+    GenericTestUtils.setLogLevel(SshFenceByTcpPort.LOG, Level.TRACE);
   }
 
   private static String TEST_FENCING_HOST = System.getProperty(

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/TestZKFailoverController.java

@@ -22,7 +22,6 @@ import static org.junit.Assert.*;
 import java.security.NoSuchAlgorithmException;
 
 import com.google.common.base.Supplier;
-import org.apache.commons.logging.impl.Log4JLogger;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
 import org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo;
@@ -30,7 +29,6 @@ import org.apache.hadoop.ha.HealthMonitor.State;
 import org.apache.hadoop.ha.MiniZKFCCluster.DummyZKFC;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.util.Time;
-import org.apache.log4j.Level;
 import org.apache.zookeeper.KeeperException;
 import org.apache.zookeeper.ZooKeeper;
 import org.apache.zookeeper.data.Stat;
@@ -41,6 +39,7 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.Timeout;
 import org.mockito.Mockito;
+import org.slf4j.event.Level;
 
 public class TestZKFailoverController extends ClientBaseWithFixes {
   private Configuration conf;
@@ -71,7 +70,7 @@ public class TestZKFailoverController extends ClientBaseWithFixes {
     "digest:" + DIGEST_USER_HASH + ":rwcda";
   
   static {
-    ((Log4JLogger)ActiveStandbyElector.LOG).getLogger().setLevel(Level.ALL);
+    GenericTestUtils.setLogLevel(ActiveStandbyElector.LOG, Level.TRACE);
   }
   
   @Before

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/serializer/TestSerializationFactory.java

@@ -18,21 +18,21 @@
 package org.apache.hadoop.io.serializer;
 
 import org.apache.hadoop.io.LongWritable;
+import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.BeforeClass;
 import org.junit.Test;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertNotNull;
 
-import org.apache.commons.logging.impl.Log4JLogger;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.io.Writable;
-import org.apache.log4j.Level;
+import org.slf4j.event.Level;
 
 public class TestSerializationFactory {
 
   static {
-    ((Log4JLogger) SerializationFactory.LOG).getLogger().setLevel(Level.ALL);
+    GenericTestUtils.setLogLevel(SerializationFactory.LOG, Level.TRACE);
   }
 
   static Configuration conf;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/MiniRPCBenchmark.java

@@ -26,9 +26,9 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Enumeration;
 
+import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.Assert;
 
-import org.apache.commons.logging.impl.Log4JLogger;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.net.NetUtils;
@@ -43,8 +43,7 @@ import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSelect
 import org.apache.hadoop.security.token.delegation.TestDelegationToken.TestDelegationTokenIdentifier;
 import org.apache.hadoop.security.token.delegation.TestDelegationToken.TestDelegationTokenSecretManager;
 import org.apache.hadoop.util.Time;
-import org.apache.log4j.Level;
-import org.apache.log4j.LogManager;
+import org.slf4j.event.Level;
 
 /**
  * MiniRPCBenchmark measures time to establish an RPC connection 
@@ -255,9 +254,9 @@ public class MiniRPCBenchmark {
   }
 
   static void setLoggingLevel(Level level) {
-    LogManager.getLogger(Server.class.getName()).setLevel(level);
-    ((Log4JLogger)Server.AUDITLOG).getLogger().setLevel(level);
-    LogManager.getLogger(Client.class.getName()).setLevel(level);
+    GenericTestUtils.setLogLevel(Server.LOG, level);
+    GenericTestUtils.setLogLevel(Server.AUDITLOG, level);
+    GenericTestUtils.setLogLevel(Client.LOG, level);
   }
 
   /**
@@ -370,7 +369,7 @@ public class MiniRPCBenchmark {
       useDelegationToken = args[3].equalsIgnoreCase("useToken");
     Level l = Level.ERROR;
     if(args.length > 4)
-      l = Level.toLevel(args[4]);
+      l = GenericTestUtils.toLevel(args[4]);
 
     MiniRPCBenchmark mb = new MiniRPCBenchmark(l);
     long elapsedTime = 0;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestIPC.java

@@ -60,7 +60,6 @@ import javax.net.SocketFactory;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.apache.commons.logging.impl.Log4JLogger;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
@@ -85,7 +84,6 @@ import org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod;
 import org.apache.hadoop.security.token.SecretManager.InvalidToken;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.util.StringUtils;
-import org.apache.log4j.Level;
 import org.junit.Assert;
 import org.junit.Assume;
 import org.junit.Before;
@@ -98,6 +96,7 @@ import org.mockito.stubbing.Answer;
 import com.google.common.base.Supplier;
 import com.google.common.primitives.Bytes;
 import com.google.common.primitives.Ints;
+import org.slf4j.event.Level;
 
 /** Unit tests for IPC. */
 public class TestIPC {
@@ -864,7 +863,7 @@ public class TestIPC {
 
   @Test(timeout=30000)
   public void testConnectionIdleTimeouts() throws Exception {
-    ((Log4JLogger)Server.LOG).getLogger().setLevel(Level.DEBUG);
+    GenericTestUtils.setLogLevel(Server.LOG, Level.DEBUG);
     final int maxIdle = 1000;
     final int cleanupInterval = maxIdle*3/4; // stagger cleanups
     final int killMax = 3;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestMiniRPCBenchmark.java

@@ -18,8 +18,8 @@
 package org.apache.hadoop.ipc;
 
 import org.apache.hadoop.conf.Configuration;
-import org.apache.log4j.Level;
 import org.junit.Test;
+import org.slf4j.event.Level;
 
 /**
  * Test {@link MiniRPCBenchmark}

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPC.java

@@ -50,11 +50,11 @@ import org.apache.hadoop.security.token.TokenIdentifier;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.MetricsAsserts;
 import org.apache.hadoop.test.MockitoUtil;
-import org.apache.log4j.Level;
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.Mockito;
 import org.mockito.internal.util.reflection.Whitebox;
+import org.slf4j.event.Level;
 
 import javax.net.SocketFactory;
 import java.io.Closeable;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestSaslRPC.java

@@ -22,7 +22,6 @@ import com.google.protobuf.ServiceException;
 import org.apache.commons.lang.StringUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.apache.commons.logging.impl.Log4JLogger;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
@@ -36,7 +35,7 @@ import org.apache.hadoop.security.SaslRpcServer.QualityOfProtection;
 import org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod;
 import org.apache.hadoop.security.token.*;
 import org.apache.hadoop.security.token.SecretManager.InvalidToken;
-import org.apache.log4j.Level;
+import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
@@ -44,6 +43,7 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
+import org.slf4j.event.Level;
 
 import javax.security.auth.callback.Callback;
 import javax.security.auth.callback.CallbackHandler;
@@ -186,12 +186,12 @@ public class TestSaslRPC extends TestRpcBase {
   }
 
   static {
-    ((Log4JLogger) Client.LOG).getLogger().setLevel(Level.ALL);
-    ((Log4JLogger) Server.LOG).getLogger().setLevel(Level.ALL);
-    ((Log4JLogger) SaslRpcClient.LOG).getLogger().setLevel(Level.ALL);
-    ((Log4JLogger) SaslRpcServer.LOG).getLogger().setLevel(Level.ALL);
-    ((Log4JLogger) SaslInputStream.LOG).getLogger().setLevel(Level.ALL);
-    ((Log4JLogger) SecurityUtil.LOG).getLogger().setLevel(Level.ALL);
+    GenericTestUtils.setLogLevel(Client.LOG, Level.TRACE);
+    GenericTestUtils.setLogLevel(Server.LOG, Level.TRACE);
+    GenericTestUtils.setLogLevel(SaslRpcClient.LOG, Level.TRACE);
+    GenericTestUtils.setLogLevel(SaslRpcServer.LOG, Level.TRACE);
+    GenericTestUtils.setLogLevel(SaslInputStream.LOG, Level.TRACE);
+    GenericTestUtils.setLogLevel(SecurityUtil.LOG, Level.TRACE);
   }
 
   public static class BadTokenSecretManager extends TestTokenSecretManager {

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestGroupFallback.java

@@ -25,16 +25,16 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
-import org.apache.log4j.Level;
-import org.apache.log4j.Logger;
+import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.Test;
+import org.slf4j.event.Level;
 
 public class TestGroupFallback {
   public static final Log LOG = LogFactory.getLog(TestGroupFallback.class);
 
   @Test
   public void testGroupShell() throws Exception {
-    Logger.getRootLogger().setLevel(Level.DEBUG);
+    GenericTestUtils.setRootLogLevel(Level.DEBUG);
     Configuration conf = new Configuration();
     conf.set(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
         "org.apache.hadoop.security.ShellBasedUnixGroupsMapping");
@@ -50,7 +50,7 @@ public class TestGroupFallback {
 
   @Test
   public void testNetgroupShell() throws Exception {
-    Logger.getRootLogger().setLevel(Level.DEBUG);
+    GenericTestUtils.setRootLogLevel(Level.DEBUG);
     Configuration conf = new Configuration();
     conf.set(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
         "org.apache.hadoop.security.ShellBasedUnixGroupsNetgroupMapping");
@@ -69,7 +69,7 @@ public class TestGroupFallback {
     LOG.info("running 'mvn -Pnative -DTestGroupFallback clear test' will " +
         "test the normal path and 'mvn -DTestGroupFallback clear test' will" +
         " test the fall back functionality");
-    Logger.getRootLogger().setLevel(Level.DEBUG);
+    GenericTestUtils.setRootLogLevel(Level.DEBUG);
     Configuration conf = new Configuration();
     conf.set(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
         "org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback");
@@ -88,7 +88,7 @@ public class TestGroupFallback {
     LOG.info("running 'mvn -Pnative -DTestGroupFallback clear test' will " +
         "test the normal path and 'mvn -DTestGroupFallback clear test' will" +
         " test the fall back functionality");
-    Logger.getRootLogger().setLevel(Level.DEBUG);
+    GenericTestUtils.setRootLogLevel(Level.DEBUG);
     Configuration conf = new Configuration();
     conf.set(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
         "org.apache.hadoop.security.JniBasedUnixGroupsNetgroupMappingWithFallback");

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestUGIWithMiniKdc.java

@@ -23,9 +23,9 @@ import org.apache.hadoop.security.authentication.util.KerberosUtil;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.LambdaTestUtils;
 import org.apache.hadoop.util.PlatformName;
-import org.apache.log4j.Level;
 import org.junit.After;
 import org.junit.Test;
+import org.slf4j.event.Level;
 
 import javax.security.auth.Subject;
 import javax.security.auth.kerberos.KerberosPrincipal;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestUserGroupInformation.java

@@ -33,7 +33,6 @@ import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.util.Shell;
 import org.apache.hadoop.util.StringUtils;
 import org.apache.hadoop.util.Time;
-import org.apache.log4j.Level;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
@@ -41,6 +40,7 @@ import org.junit.BeforeClass;
 import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.slf4j.event.Level;
 
 import javax.security.auth.Subject;
 import javax.security.auth.kerberos.KerberosPrincipal;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/ssl/TestSSLFactory.java

@@ -26,7 +26,6 @@ import org.apache.hadoop.security.alias.CredentialProviderFactory;
 import org.apache.hadoop.security.alias.JavaKeyStoreProvider;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.util.StringUtils;
-import org.apache.log4j.Level;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
@@ -34,6 +33,7 @@ import org.junit.BeforeClass;
 import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.slf4j.event.Level;
 
 import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.SSLEngine;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/token/delegation/web/TestWebDelegationToken.java

@@ -32,7 +32,6 @@ import org.apache.hadoop.security.authentication.server.PseudoAuthenticationHand
 import org.apache.hadoop.security.authentication.util.KerberosUtil;
 import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSecretManager;
 import org.apache.hadoop.test.GenericTestUtils;
-import org.apache.log4j.Level;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.server.ServerConnector;
 import org.eclipse.jetty.servlet.ServletContextHandler;
@@ -42,6 +41,7 @@ import org.junit.Before;
 import org.junit.Test;
 import org.eclipse.jetty.servlet.FilterHolder;
 import org.eclipse.jetty.servlet.ServletHolder;
+import org.slf4j.event.Level;
 
 import javax.security.auth.Subject;
 import javax.security.auth.kerberos.KerberosPrincipal;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java

@@ -140,6 +140,20 @@ public abstract class GenericTestUtils {
     setLogLevel((Log4JLogger) log, level);
   }
 
+  /**
+   * A helper used in log4j2 migration to accept legacy
+   * org.apache.commons.logging apis.
+   * <p>
+   * And will be removed after migration.
+   *
+   * @param log   a log
+   * @param level level to be set
+   */
+  @Deprecated
+  public static void setLogLevel(Log log, org.slf4j.event.Level level) {
+    setLogLevel(log, Level.toLevel(level.toString()));
+  }
+
   /**
    * @deprecated
    * use {@link #setLogLevel(org.slf4j.Logger, org.slf4j.event.Level)} instead
@@ -172,6 +186,22 @@ public abstract class GenericTestUtils {
     setLogLevel(toLog4j(logger), Level.toLevel(level.toString()));
   }
 
+  public static void setRootLogLevel(org.slf4j.event.Level level) {
+    setLogLevel(LogManager.getRootLogger(), Level.toLevel(level.toString()));
+  }
+
+  public static org.slf4j.event.Level toLevel(String level) {
+    return toLevel(level, org.slf4j.event.Level.DEBUG);
+  }
+
+  public static org.slf4j.event.Level toLevel(
+      String level, org.slf4j.event.Level defaultLevel) {
+    try {
+      return org.slf4j.event.Level.valueOf(level);
+    } catch (IllegalArgumentException e) {
+      return defaultLevel;
+    }
+  }
   /**
    * Extracts the name of the method where the invocation has happened
    * @return String name of the invoking method

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/TestGenericTestUtils.java

@@ -27,7 +27,9 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import com.google.common.base.Supplier;
+import org.slf4j.event.Level;
 
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
@@ -151,4 +153,12 @@ public class TestGenericTestUtils extends GenericTestUtils {
       assertExceptionContains(GenericTestUtils.ERROR_INVALID_ARGUMENT, e);
     }
   }
+
+  @Test
+  public void testToLevel() throws Throwable {
+    assertEquals(Level.INFO, toLevel("INFO"));
+    assertEquals(Level.DEBUG, toLevel("NonExistLevel"));
+    assertEquals(Level.INFO, toLevel("INFO", Level.TRACE));
+    assertEquals(Level.TRACE, toLevel("NonExistLevel", Level.TRACE));
+  }
 }

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/util/Crc32PerformanceTest.java

@@ -27,10 +27,11 @@ import java.util.Random;
 import java.util.zip.CRC32;
 import java.util.zip.Checksum;
 
-import org.apache.commons.logging.LogFactory;
-import org.apache.commons.logging.impl.Log4JLogger;
 import org.apache.hadoop.fs.ChecksumException;
-import org.apache.log4j.Level;
+import org.apache.hadoop.test.GenericTestUtils;
+import org.slf4j.event.Level;
+
+import static org.slf4j.LoggerFactory.getLogger;
 
 /**
  * Performance tests to compare performance of Crc32|Crc32C implementations
@@ -176,8 +177,8 @@ public class Crc32PerformanceTest {
         crcs.add(Crc32.Native.class);
       }
       crcs.add(Crc32.NativeC.class);
-      ((Log4JLogger)LogFactory.getLog(NativeCodeLoader.class))
-          .getLogger().setLevel(Level.ALL);
+      GenericTestUtils.setLogLevel(getLogger(NativeCodeLoader.class),
+          Level.TRACE);
     }
   }
 

hadoop-common-project/hadoop-nfs/pom.xml

@@ -47,6 +47,12 @@
       <artifactId>hadoop-common</artifactId>
       <scope>provided</scope>
     </dependency>
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-common</artifactId>
+      <scope>test</scope>
+      <type>test-jar</type>
+    </dependency>
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>

hadoop-common-project/hadoop-nfs/src/test/java/org/apache/hadoop/oncrpc/TestFrameDecoder.java

@@ -28,8 +28,7 @@ import java.util.Random;
 import org.apache.hadoop.oncrpc.RpcUtil.RpcFrameDecoder;
 import org.apache.hadoop.oncrpc.security.CredentialsNone;
 import org.apache.hadoop.oncrpc.security.VerifierNone;
-import org.apache.log4j.Level;
-import org.apache.commons.logging.impl.Log4JLogger;
+import org.apache.hadoop.test.GenericTestUtils;
 import org.jboss.netty.buffer.ByteBufferBackedChannelBuffer;
 import org.jboss.netty.buffer.ChannelBuffer;
 import org.jboss.netty.buffer.ChannelBuffers;
@@ -38,11 +37,12 @@ import org.jboss.netty.channel.ChannelException;
 import org.jboss.netty.channel.ChannelHandlerContext;
 import org.junit.Test;
 import org.mockito.Mockito;
+import org.slf4j.event.Level;
 
 public class TestFrameDecoder {
   
   static {
-    ((Log4JLogger) RpcProgram.LOG).getLogger().setLevel(Level.ALL);
+    GenericTestUtils.setLogLevel(RpcProgram.LOG, Level.TRACE);
   }
 
   private static int resultSize;