diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/BackupStore.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/BackupStore.java
index e79ec664a56..94ad9e0187e 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/BackupStore.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/BackupStore.java
@@ -26,8 +26,6 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.NoSuchElementException;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -45,6 +43,8 @@ import org.apache.hadoop.mapreduce.MRConfig;
 import org.apache.hadoop.mapreduce.MRJobConfig;
 import org.apache.hadoop.mapreduce.TaskAttemptID;
 import org.apache.hadoop.mapreduce.CryptoUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * <code>BackupStore</code> is an utility class that is used to support
@@ -60,7 +60,8 @@ import org.apache.hadoop.mapreduce.CryptoUtils;
 @InterfaceStability.Unstable
 public class BackupStore<K,V> {
 
-  private static final Log LOG = LogFactory.getLog(BackupStore.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(BackupStore.class.getName());
   private static final int MAX_VINT_SIZE = 9;
   private static final int EOF_MARKER_SIZE = 2 * MAX_VINT_SIZE;
   private final TaskAttemptID tid;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/CleanupQueue.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/CleanupQueue.java
index 2282b5410e6..a40a40ada02 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/CleanupQueue.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/CleanupQueue.java
@@ -21,16 +21,16 @@ package org.apache.hadoop.mapred;
 import java.io.IOException;
 import java.util.concurrent.LinkedBlockingQueue;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 
 class CleanupQueue {
 
-  public static final Log LOG =
-    LogFactory.getLog(CleanupQueue.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(CleanupQueue.class);
 
   private static PathCleanupThread cleanupThread;
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java
index c9e0b9fc7ca..1b2ce191121 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java
@@ -30,7 +30,6 @@ import java.util.HashMap;
 import java.util.Iterator;
 
 import org.apache.commons.collections.IteratorUtils;
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.mapreduce.FileSystemCounter;
@@ -44,6 +43,7 @@ import org.apache.hadoop.mapreduce.counters.GenericCounter;
 import org.apache.hadoop.mapreduce.counters.Limits;
 import org.apache.hadoop.mapreduce.lib.input.FileInputFormatCounter;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormatCounter;
+import org.slf4j.Logger;
 
 import com.google.common.collect.Iterators;
 
@@ -596,7 +596,7 @@ public class Counters
    * Logs the current counter values.
    * @param log The log to use.
    */
-  public void log(Log log) {
+  public void log(Logger log) {
     log.info("Counters: " + size());
     for(Group group: this) {
       log.info("  " + group.getDisplayName());
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/DeprecatedQueueConfigurationParser.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/DeprecatedQueueConfigurationParser.java
index 1f0586909ab..ddfc820499f 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/DeprecatedQueueConfigurationParser.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/DeprecatedQueueConfigurationParser.java
@@ -23,8 +23,8 @@ import org.apache.hadoop.mapreduce.MRConfig;
 import org.apache.hadoop.mapreduce.QueueState;
 import org.apache.hadoop.security.authorize.AccessControlList;
 import static org.apache.hadoop.mapred.QueueManager.*;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.util.List;
 import java.util.Map;
@@ -37,8 +37,8 @@ import java.util.ArrayList;
  * 
  */
 class DeprecatedQueueConfigurationParser extends QueueConfigurationParser {
-  private static final Log LOG =
-    LogFactory.getLog(DeprecatedQueueConfigurationParser.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(DeprecatedQueueConfigurationParser.class);
   static final String MAPRED_QUEUE_NAMES_KEY = "mapred.queue.names";
 
   DeprecatedQueueConfigurationParser(Configuration conf) {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileInputFormat.java
index 3e0ea253336..b0ec9796488 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileInputFormat.java
@@ -30,8 +30,6 @@ import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.BlockLocation;
@@ -50,6 +48,8 @@ import org.apache.hadoop.util.StopWatch;
 import org.apache.hadoop.util.StringUtils;
 
 import com.google.common.collect.Iterables;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** 
  * A base class for file-based {@link InputFormat}.
@@ -68,8 +68,8 @@ import com.google.common.collect.Iterables;
 @InterfaceStability.Stable
 public abstract class FileInputFormat<K, V> implements InputFormat<K, V> {
 
-  public static final Log LOG =
-    LogFactory.getLog(FileInputFormat.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(FileInputFormat.class);
   
   @Deprecated
   public enum Counter {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileOutputCommitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileOutputCommitter.java
index c44bb37f5cf..64f346df59a 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileOutputCommitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileOutputCommitter.java
@@ -20,12 +20,12 @@ package org.apache.hadoop.mapred;
 
 import java.io.IOException;
 
-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.InterfaceStability;
 import org.apache.hadoop.fs.Path;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** An {@link OutputCommitter} that commits files specified 
  * in job output directory i.e. ${mapreduce.output.fileoutputformat.outputdir}. 
@@ -34,7 +34,7 @@ import org.apache.hadoop.fs.Path;
 @InterfaceStability.Stable
 public class FileOutputCommitter extends OutputCommitter {
 
-  public static final Log LOG = LogFactory.getLog(
+  public static final Logger LOG = LoggerFactory.getLogger(
       "org.apache.hadoop.mapred.FileOutputCommitter");
   
   /**
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFile.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFile.java
index 32e07e7b9fb..1a917e15070 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFile.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFile.java
@@ -43,8 +43,8 @@ import org.apache.hadoop.io.compress.Decompressor;
 import org.apache.hadoop.io.serializer.SerializationFactory;
 import org.apache.hadoop.io.serializer.Serializer;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * <code>IFile</code> is the simple &lt;key-len, value-len, key, value&gt; format
@@ -56,7 +56,7 @@ import org.apache.commons.logging.LogFactory;
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 public class IFile {
-  private static final Log LOG = LogFactory.getLog(IFile.class);
+  private static final Logger LOG = LoggerFactory.getLogger(IFile.class);
   public static final int EOF_MARKER = -1; // End of File Marker
   
   /**
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFileInputStream.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFileInputStream.java
index 02cbce3d9fd..ce1ad5de55b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFileInputStream.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFileInputStream.java
@@ -25,8 +25,6 @@ import java.io.IOException;
 import java.io.InputStream;
 
 import org.apache.hadoop.conf.Configuration;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.ChecksumException;
@@ -36,6 +34,8 @@ import org.apache.hadoop.io.ReadaheadPool;
 import org.apache.hadoop.io.ReadaheadPool.ReadaheadRequest;
 import org.apache.hadoop.mapreduce.MRConfig;
 import org.apache.hadoop.util.DataChecksum;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 /**
  * A checksum input stream, used for IFiles.
  * Used to validate the checksum of files created by {@link IFileOutputStream}. 
@@ -59,7 +59,8 @@ public class IFileInputStream extends InputStream {
   private boolean readahead;
   private int readaheadLength;
 
-  public static final Log LOG = LogFactory.getLog(IFileInputStream.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(IFileInputStream.class);
 
   private boolean disableChecksumValidation = false;
   
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
index c3db9514d31..0e24bbe5330 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java
@@ -22,17 +22,17 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.atomic.AtomicInteger;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.mapreduce.server.tasktracker.TTConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 class IndexCache {
 
   private final JobConf conf;
   private final int totalMemoryAllowed;
   private AtomicInteger totalMemoryUsed = new AtomicInteger();
-  private static final Log LOG = LogFactory.getLog(IndexCache.class);
+  private static final Logger LOG = LoggerFactory.getLogger(IndexCache.class);
 
   private final ConcurrentHashMap<String,IndexInformation> cache =
     new ConcurrentHashMap<String,IndexInformation>();
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobACLsManager.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobACLsManager.java
index 0dbbe5a86c3..7373f7a1b68 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobACLsManager.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobACLsManager.java
@@ -20,8 +20,6 @@ package org.apache.hadoop.mapred;
 import java.util.HashMap;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.mapreduce.JobACL;
@@ -29,11 +27,13 @@ import org.apache.hadoop.mapreduce.MRConfig;
 import org.apache.hadoop.security.AccessControlException;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.AccessControlList;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @InterfaceAudience.Private
 public class JobACLsManager {
 
-  static final Log LOG = LogFactory.getLog(JobACLsManager.class);
+  static final Logger LOG = LoggerFactory.getLogger(JobACLsManager.class);
   Configuration conf;
   private final AccessControlList adminAcl;
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobConf.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobConf.java
index be8fa9edc82..8c57d1bed03 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobConf.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobConf.java
@@ -24,8 +24,6 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import com.google.common.annotations.VisibleForTesting;
-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.InterfaceStability;
@@ -53,6 +51,8 @@ import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.util.ClassUtil;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.Tool;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** 
  * A map/reduce job configuration.
@@ -115,7 +115,7 @@ import org.apache.hadoop.util.Tool;
 @InterfaceStability.Stable
 public class JobConf extends Configuration {
 
-  private static final Log LOG = LogFactory.getLog(JobConf.class);
+  private static final Logger LOG = LoggerFactory.getLogger(JobConf.class);
   private static final Pattern JAVA_OPTS_XMX_PATTERN =
           Pattern.compile(".*(?:^|\\s)-Xmx(\\d+)([gGmMkK]?)(?:$|\\s).*");
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobEndNotifier.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobEndNotifier.java
index 5f03dc875c5..1ce525490d1 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobEndNotifier.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobEndNotifier.java
@@ -24,20 +24,20 @@ import java.net.URISyntaxException;
 import java.util.concurrent.Delayed;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.client.params.ClientPNames;
 import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.params.CoreConnectionPNames;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 public class JobEndNotifier {
-  private static final Log LOG =
-    LogFactory.getLog(JobEndNotifier.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(JobEndNotifier.class.getName());
 
  
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JvmContext.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JvmContext.java
index 1c2d9361e33..88eeefc8e76 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JvmContext.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JvmContext.java
@@ -24,13 +24,13 @@ import java.io.IOException;
 
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.Writable;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 class JvmContext implements Writable {
 
-  public static final Log LOG =
-    LogFactory.getLog(JvmContext.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(JvmContext.class);
   
   JVMId jvmId;
   String pid;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/LineRecordReader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/LineRecordReader.java
index 980269700ae..bfc6c0e855b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/LineRecordReader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/LineRecordReader.java
@@ -39,8 +39,8 @@ import org.apache.hadoop.io.compress.SplittableCompressionCodec;
 import org.apache.hadoop.mapreduce.lib.input.CompressedSplitLineReader;
 import org.apache.hadoop.mapreduce.lib.input.SplitLineReader;
 import org.apache.hadoop.mapreduce.lib.input.UncompressedSplitLineReader;
-import org.apache.commons.logging.LogFactory;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Treats keys as offset in file and value as line. 
@@ -48,8 +48,8 @@ import org.apache.commons.logging.Log;
 @InterfaceAudience.LimitedPrivate({"MapReduce", "Pig"})
 @InterfaceStability.Unstable
 public class LineRecordReader implements RecordReader<LongWritable, Text> {
-  private static final Log LOG
-    = LogFactory.getLog(LineRecordReader.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(LineRecordReader.class.getName());
 
   private CompressionCodecFactory compressionCodecs = null;
   private long start;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/MapTask.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/MapTask.java
index 9ec091415ea..27c89763f8b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/MapTask.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/MapTask.java
@@ -32,8 +32,6 @@ import java.util.List;
 import java.util.concurrent.locks.Condition;
 import java.util.concurrent.locks.ReentrantLock;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.FSDataInputStream;
@@ -74,6 +72,8 @@ import org.apache.hadoop.util.QuickSort;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.StringInterner;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** A Map task. */
 @InterfaceAudience.LimitedPrivate({"MapReduce"})
@@ -87,7 +87,8 @@ public class MapTask extends Task {
   private TaskSplitIndex splitMetaInfo = new TaskSplitIndex();
   private final static int APPROX_HEADER_LENGTH = 150;
 
-  private static final Log LOG = LogFactory.getLog(MapTask.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(MapTask.class.getName());
 
   private Progress mapPhase;
   private Progress sortPhase;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Merger.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Merger.java
index 3667e3ca889..16f88370bb6 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Merger.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Merger.java
@@ -23,8 +23,6 @@ import java.util.Collections;
 import java.util.Comparator;
 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.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -45,6 +43,8 @@ import org.apache.hadoop.mapreduce.CryptoUtils;
 import org.apache.hadoop.util.PriorityQueue;
 import org.apache.hadoop.util.Progress;
 import org.apache.hadoop.util.Progressable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Merger is an utility class used by the Map and Reduce tasks for merging
@@ -53,7 +53,7 @@ import org.apache.hadoop.util.Progressable;
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 public class Merger {  
-  private static final Log LOG = LogFactory.getLog(Merger.class);
+  private static final Logger LOG = LoggerFactory.getLogger(Merger.class);
 
   // Local directories
   private static LocalDirAllocator lDirAlloc = 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Queue.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Queue.java
index 8f4f3e83407..cb88a818b2e 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Queue.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Queue.java
@@ -17,10 +17,10 @@
  */
 package org.apache.hadoop.mapred;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.mapreduce.QueueState;
 import org.apache.hadoop.security.authorize.AccessControlList;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -36,7 +36,7 @@ import java.util.TreeSet;
  */
 class Queue implements Comparable<Queue>{
 
-  private static final Log LOG = LogFactory.getLog(Queue.class);
+  private static final Logger LOG = LoggerFactory.getLogger(Queue.class);
 
   //Queue name
   private String name = null;
@@ -348,14 +348,14 @@ class Queue implements Comparable<Queue>{
       //check for the individual children and then see if all of them
       //are updated.
       if (newState.getChildren() == null) {
-        LOG.fatal("In the current state, queue " + getName() + " has "
+        LOG.error("In the current state, queue " + getName() + " has "
             + children.size() + " but the new state has none!");
         return false;
       }
       int childrenSize = children.size();
       int newChildrenSize = newState.getChildren().size();
       if (childrenSize != newChildrenSize) {
-        LOG.fatal("Number of children for queue " + newState.getName()
+        LOG.error("Number of children for queue " + newState.getName()
             + " in newState is " + newChildrenSize + " which is not equal to "
             + childrenSize + " in the current state.");
         return false;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/QueueConfigurationParser.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/QueueConfigurationParser.java
index 3e608e00738..cbc8e526f0d 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/QueueConfigurationParser.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/QueueConfigurationParser.java
@@ -17,8 +17,6 @@
  */
 package org.apache.hadoop.mapred;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.mapreduce.MRConfig;
 import org.apache.hadoop.mapreduce.QueueState;
@@ -31,6 +29,8 @@ import org.w3c.dom.NamedNodeMap;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 import org.w3c.dom.DOMException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.xml.parsers.ParserConfigurationException;
 import javax.xml.parsers.DocumentBuilderFactory;
@@ -59,8 +59,8 @@ import java.util.HashSet;
  * Creates the complete queue hieararchy
  */
 class QueueConfigurationParser {
-  private static final Log LOG =
-    LogFactory.getLog(QueueConfigurationParser.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(QueueConfigurationParser.class);
   
   private boolean aclsEnabled = false;
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/QueueManager.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/QueueManager.java
index d4ea87bc7a7..ec43bce678b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/QueueManager.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/QueueManager.java
@@ -21,8 +21,6 @@ package org.apache.hadoop.mapred;
 import com.fasterxml.jackson.core.JsonFactory;
 import com.fasterxml.jackson.core.JsonGenerationException;
 import com.fasterxml.jackson.core.JsonGenerator;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.IOUtils;
@@ -31,6 +29,8 @@ import org.apache.hadoop.mapreduce.QueueState;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.AccessControlList;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.BufferedInputStream;
 import java.io.InputStream;
@@ -82,7 +82,7 @@ import java.net.URL;
 @InterfaceAudience.Private
 public class QueueManager {
 
-  private static final Log LOG = LogFactory.getLog(QueueManager.class);
+  private static final Logger LOG = LoggerFactory.getLogger(QueueManager.class);
 
   // Map of a queue name and Queue object
   private Map<String, Queue> leafQueues = new HashMap<String,Queue>();
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ReduceTask.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ReduceTask.java
index c90e38bfe9a..b3c5de3c367 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ReduceTask.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ReduceTask.java
@@ -28,8 +28,6 @@ import java.util.Map;
 import java.util.SortedSet;
 import java.util.TreeSet;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -56,6 +54,8 @@ import org.apache.hadoop.mapreduce.task.reduce.Shuffle;
 import org.apache.hadoop.util.Progress;
 import org.apache.hadoop.util.Progressable;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** A Reduce task. */
 @InterfaceAudience.Private
@@ -70,7 +70,8 @@ public class ReduceTask extends Task {
        });
   }
   
-  private static final Log LOG = LogFactory.getLog(ReduceTask.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(ReduceTask.class.getName());
   private int numMaps;
 
   private CompressionCodec codec;
@@ -456,7 +457,7 @@ public class ReduceTask extends Task {
       out.close(reporter);
       out = null;
     } finally {
-      IOUtils.cleanup(LOG, reducer);
+      IOUtils.cleanupWithLogger(LOG, reducer);
       closeQuietly(out, reporter);
     }
   }
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/SortedRanges.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/SortedRanges.java
index cdc2695c398..9d73e2be763 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/SortedRanges.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/SortedRanges.java
@@ -25,9 +25,9 @@ import java.util.Iterator;
 import java.util.SortedSet;
 import java.util.TreeSet;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.Writable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Keeps the Ranges sorted by startIndex.
@@ -37,8 +37,8 @@ import org.apache.hadoop.io.Writable;
  */
 class SortedRanges implements Writable{
   
-  private static final Log LOG = 
-    LogFactory.getLog(SortedRanges.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(SortedRanges.class);
   
   private TreeSet<Range> ranges = new TreeSet<Range>();
   private long indicesCount;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Task.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Task.java
index 542e956582a..f9bd30bb3d0 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Task.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Task.java
@@ -35,8 +35,6 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import javax.crypto.SecretKey;
 
 import com.google.common.annotations.VisibleForTesting;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configurable;
@@ -73,6 +71,8 @@ import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.ShutdownHookManager;
 import org.apache.hadoop.util.StringInterner;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Base class for tasks.
@@ -80,8 +80,8 @@ import org.apache.hadoop.util.StringUtils;
 @InterfaceAudience.LimitedPrivate({"MapReduce"})
 @InterfaceStability.Unstable
 abstract public class Task implements Writable, Configurable {
-  private static final Log LOG =
-    LogFactory.getLog(Task.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(Task.class);
 
   public static String MERGED_OUTPUT_PREFIX = ".merged";
   public static final long DEFAULT_COMBINE_RECORDS_BEFORE_PROGRESS = 10000;
@@ -355,7 +355,7 @@ abstract public class Task implements Writable, Configurable {
    */
   protected void reportFatalError(TaskAttemptID id, Throwable throwable, 
                                   String logMsg) {
-    LOG.fatal(logMsg);
+    LOG.error(logMsg);
     
     if (ShutdownHookManager.get().isShutdownInProgress()) {
       return;
@@ -368,7 +368,7 @@ abstract public class Task implements Writable, Configurable {
     try {
       umbilical.fatalError(id, cause);
     } catch (IOException ioe) {
-      LOG.fatal("Failed to contact the tasktracker", ioe);
+      LOG.error("Failed to contact the tasktracker", ioe);
       System.exit(-1);
     }
   }
@@ -849,13 +849,13 @@ abstract public class Task implements Writable, Configurable {
         } catch (TaskLimitException e) {
           String errMsg = "Task exceeded the limits: " +
                   StringUtils.stringifyException(e);
-          LOG.fatal(errMsg);
+          LOG.error(errMsg);
           try {
             umbilical.fatalError(taskId, errMsg);
           } catch (IOException ioe) {
-            LOG.fatal("Failed to update failure diagnosis", ioe);
+            LOG.error("Failed to update failure diagnosis", ioe);
           }
-          LOG.fatal("Killing " + taskId);
+          LOG.error("Killing " + taskId);
           resetDoneFlag();
           ExitUtil.terminate(69);
         } catch (Throwable t) {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskLog.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskLog.java
index 059b0ad31e3..54e1e67562a 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskLog.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskLog.java
@@ -35,8 +35,6 @@ import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileStatus;
@@ -56,6 +54,7 @@ import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.log4j.Appender;
 import org.apache.log4j.LogManager;
 import org.apache.log4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.base.Charsets;
 
@@ -66,8 +65,8 @@ import com.google.common.base.Charsets;
  */
 @InterfaceAudience.Private
 public class TaskLog {
-  private static final Log LOG =
-    LogFactory.getLog(TaskLog.class);
+  private static final org.slf4j.Logger LOG =
+      LoggerFactory.getLogger(TaskLog.class);
 
   static final String USERLOGS_DIR_NAME = "userlogs";
 
@@ -156,7 +155,7 @@ public class TaskLog {
       fis.close();
       fis = null;
     } finally {
-      IOUtils.cleanup(LOG, fis);
+      IOUtils.cleanupWithLogger(LOG, fis);
     }
     return l;
   }
@@ -231,7 +230,7 @@ public class TaskLog {
       bos.close();
       bos = null;
     } finally {
-      IOUtils.cleanup(LOG, dos, bos);
+      IOUtils.cleanupWithLogger(LOG, dos, bos);
     }
 
     File indexFile = getIndexFile(currentTaskid, isCleanup);
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskStatus.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskStatus.java
index bd12cd34d71..7496d7c6c25 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskStatus.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskStatus.java
@@ -22,8 +22,6 @@ import java.io.DataOutput;
 import java.io.IOException;
 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.InterfaceStability;
 import org.apache.hadoop.io.Text;
@@ -31,6 +29,8 @@ import org.apache.hadoop.io.Writable;
 import org.apache.hadoop.io.WritableUtils;
 import org.apache.hadoop.util.StringInterner;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 /**************************************************
  * Describes the current status of a task.  This is
  * not intended to be a comprehensive piece of data.
@@ -39,8 +39,8 @@ import org.apache.hadoop.util.StringUtils;
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 public abstract class TaskStatus implements Writable, Cloneable {
-  static final Log LOG =
-    LogFactory.getLog(TaskStatus.class.getName());
+  static final Logger LOG =
+      LoggerFactory.getLogger(TaskStatus.class.getName());
   
   //enumeration for reporting current phase of a task.
   @InterfaceAudience.Private
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/jobcontrol/Job.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/jobcontrol/Job.java
index e79ab87c281..fd078372fd5 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/jobcontrol/Job.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/jobcontrol/Job.java
@@ -23,19 +23,19 @@ import java.io.IOException;
 import java.util.ArrayList;
 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.InterfaceStability;
 import org.apache.hadoop.mapred.JobClient;
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.JobID;
 import org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @InterfaceAudience.Public
 @InterfaceStability.Stable
 public class Job extends ControlledJob {
-  static final Log LOG = LogFactory.getLog(Job.class);
+  static final Logger LOG = LoggerFactory.getLogger(Job.class);
 
   final public static int SUCCESS = 0;
   final public static int WAITING = 1;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/FieldSelectionMapReduce.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/FieldSelectionMapReduce.java
index 7a487850eee..0105559e8f3 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/FieldSelectionMapReduce.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/FieldSelectionMapReduce.java
@@ -23,8 +23,6 @@ import java.util.ArrayList;
 import java.util.Iterator;
 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.InterfaceStability;
 import org.apache.hadoop.io.Text;
@@ -35,6 +33,8 @@ import org.apache.hadoop.mapred.Reducer;
 import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.mapred.TextInputFormat;
 import org.apache.hadoop.mapreduce.lib.fieldsel.*;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This class implements a mapper/reducer class that can be used to perform
@@ -92,7 +92,8 @@ public class FieldSelectionMapReduce<K, V>
   private int allReduceValueFieldsFrom = -1;
 
 
-  public static final Log LOG = LogFactory.getLog("FieldSelectionMapReduce");
+  public static final Logger LOG =
+      LoggerFactory.getLogger("FieldSelectionMapReduce");
 
   private String specToString() {
     StringBuffer sb = new StringBuffer();
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/InputSampler.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/InputSampler.java
index d378bcac79a..affd7ede6fc 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/InputSampler.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/InputSampler.java
@@ -22,8 +22,6 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Random;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.mapred.InputFormat;
@@ -32,13 +30,15 @@ import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.RecordReader;
 import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.mapreduce.Job;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @InterfaceAudience.Public
 @InterfaceStability.Stable
 public class InputSampler<K,V> extends 
   org.apache.hadoop.mapreduce.lib.partition.InputSampler<K, V> {
 
-  private static final Log LOG = LogFactory.getLog(InputSampler.class);
+  private static final Logger LOG = LoggerFactory.getLogger(InputSampler.class);
 
   public InputSampler(JobConf conf) {
     super(conf);
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/MultithreadedMapRunner.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/MultithreadedMapRunner.java
index 05339bc5de6..0af8046fd0a 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/MultithreadedMapRunner.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/MultithreadedMapRunner.java
@@ -29,9 +29,9 @@ import org.apache.hadoop.mapred.OutputCollector;
 import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.mapred.SkipBadRecords;
 import org.apache.hadoop.mapreduce.lib.map.MultithreadedMapper;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.util.concurrent.HadoopThreadPoolExecutor;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.concurrent.*;
@@ -57,8 +57,8 @@ import java.util.concurrent.*;
 public class MultithreadedMapRunner<K1, V1, K2, V2>
     implements MapRunnable<K1, V1, K2, V2> {
 
-  private static final Log LOG =
-    LogFactory.getLog(MultithreadedMapRunner.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(MultithreadedMapRunner.class.getName());
 
   private JobConf job;
   private Mapper<K1, V1, K2, V2> mapper;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Application.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Application.java
index 733ead48e0a..83d250981f7 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Application.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Application.java
@@ -30,8 +30,6 @@ import java.util.Random;
 
 import javax.crypto.SecretKey;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.fs.FSDataOutputStream;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.FileUtil;
@@ -56,6 +54,8 @@ import org.apache.hadoop.mapreduce.security.token.JobTokenSecretManager;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This class is responsible for launching and communicating with the child 
@@ -63,7 +63,8 @@ import org.apache.hadoop.util.StringUtils;
  */
 class Application<K1 extends WritableComparable, V1 extends Writable,
                   K2 extends WritableComparable, V2 extends Writable> {
-  private static final Log LOG = LogFactory.getLog(Application.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(Application.class.getName());
   private ServerSocket serverSocket;
   private Process process;
   private Socket clientSocket;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/BinaryProtocol.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/BinaryProtocol.java
index d19672329cb..89c594a89b0 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/BinaryProtocol.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/BinaryProtocol.java
@@ -32,8 +32,6 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.BytesWritable;
 import org.apache.hadoop.io.DataOutputBuffer;
 import org.apache.hadoop.io.IOUtils;
@@ -44,6 +42,8 @@ import org.apache.hadoop.io.WritableUtils;
 import org.apache.hadoop.mapred.InputSplit;
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This protocol is a binary implementation of the Pipes protocol.
@@ -60,8 +60,8 @@ class BinaryProtocol<K1 extends WritableComparable, V1 extends Writable,
 
   private DataOutputStream stream;
   private DataOutputBuffer buffer = new DataOutputBuffer();
-  private static final Log LOG = 
-    LogFactory.getLog(BinaryProtocol.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(BinaryProtocol.class.getName());
   private UplinkReaderThread uplink;
 
   /**
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/PipesReducer.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/PipesReducer.java
index 3fbe1353245..cfabdce62c2 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/PipesReducer.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/PipesReducer.java
@@ -18,8 +18,6 @@
 
 package org.apache.hadoop.mapred.pipes;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.Writable;
 import org.apache.hadoop.io.WritableComparable;
 import org.apache.hadoop.mapred.JobConf;
@@ -28,6 +26,8 @@ import org.apache.hadoop.mapred.Reducer;
 import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.mapred.SkipBadRecords;
 import org.apache.hadoop.mapreduce.MRJobConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.Iterator;
@@ -38,7 +38,8 @@ import java.util.Iterator;
 class PipesReducer<K2 extends WritableComparable, V2 extends Writable,
     K3 extends WritableComparable, V3 extends Writable>
     implements Reducer<K2, V2, K3, V3> {
-  private static final Log LOG= LogFactory.getLog(PipesReducer.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(PipesReducer.class.getName());
   private JobConf job;
   private Application<K2, V2, K3, V3> application = null;
   private DownwardProtocol<K2, V2> downlink = null;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java
index ae457829ad1..64448c1c460 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/pipes/Submitter.java
@@ -34,8 +34,6 @@ import org.apache.commons.cli.OptionBuilder;
 import org.apache.commons.cli.Options;
 import org.apache.commons.cli.ParseException;
 import org.apache.commons.cli.Parser;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -61,6 +59,8 @@ import org.apache.hadoop.mapreduce.filecache.DistributedCache;
 import org.apache.hadoop.util.ExitUtil;
 import org.apache.hadoop.util.GenericOptionsParser;
 import org.apache.hadoop.util.Tool;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * The main entry point and job submitter. It may either be used as a command
@@ -70,7 +70,7 @@ import org.apache.hadoop.util.Tool;
 @InterfaceStability.Stable
 public class Submitter extends Configured implements Tool {
 
-  protected static final Log LOG = LogFactory.getLog(Submitter.class);
+  protected static final Logger LOG = LoggerFactory.getLogger(Submitter.class);
   public static final String PRESERVE_COMMANDFILE = 
     "mapreduce.pipes.commandfile.preserve";
   public static final String EXECUTABLE = "mapreduce.pipes.executable";
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Cluster.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Cluster.java
index 4245daf6ace..bed423a976a 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Cluster.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Cluster.java
@@ -28,8 +28,6 @@ import java.util.ServiceConfigurationError;
 import java.util.ServiceLoader;
 
 import com.google.common.annotations.VisibleForTesting;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -45,6 +43,8 @@ import org.apache.hadoop.mapreduce.v2.LogParams;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.token.SecretManager.InvalidToken;
 import org.apache.hadoop.security.token.Token;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Provides a way to access information about the map/reduce cluster.
@@ -64,7 +64,8 @@ public class Cluster {
   private Path sysDir = null;
   private Path stagingAreaDir = null;
   private Path jobHistoryDir = null;
-  private static final Log LOG = LogFactory.getLog(Cluster.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(Cluster.class);
 
   @VisibleForTesting
   static Iterable<ClientProtocolProvider> frameworkLoader =
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/CryptoUtils.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/CryptoUtils.java
index 00119cd1b51..73ce3a81117 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/CryptoUtils.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/CryptoUtils.java
@@ -22,8 +22,6 @@ import java.io.InputStream;
 import java.nio.ByteBuffer;
 
 import org.apache.commons.codec.binary.Base64;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -37,6 +35,8 @@ import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.mapreduce.security.TokenCache;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.util.LimitInputStream;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This class provides utilities to make it easier to work with Cryptographic
@@ -47,7 +47,7 @@ import org.apache.hadoop.util.LimitInputStream;
 @InterfaceStability.Unstable
 public class CryptoUtils {
 
-  private static final Log LOG = LogFactory.getLog(CryptoUtils.class);
+  private static final Logger LOG = LoggerFactory.getLogger(CryptoUtils.class);
 
   public static boolean isEncryptedSpillEnabled(Configuration conf) {
     return conf.getBoolean(MRJobConfig.MR_ENCRYPTED_INTERMEDIATE_DATA,
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java
index a09f0341623..f164b623cdf 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/Job.java
@@ -26,8 +26,6 @@ import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
@@ -44,6 +42,8 @@ import org.apache.hadoop.mapreduce.task.JobContextImpl;
 import org.apache.hadoop.mapreduce.util.ConfigUtil;
 import org.apache.hadoop.util.StringUtils;
 import org.apache.hadoop.yarn.api.records.ReservationId;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * The job submitter's view of the Job.
@@ -81,7 +81,7 @@ import org.apache.hadoop.yarn.api.records.ReservationId;
 @InterfaceAudience.Public
 @InterfaceStability.Evolving
 public class Job extends JobContextImpl implements JobContext, AutoCloseable {
-  private static final Log LOG = LogFactory.getLog(Job.class);
+  private static final Logger LOG = LoggerFactory.getLogger(Job.class);
 
   @InterfaceStability.Evolving
   public enum JobState {DEFINE, RUNNING};
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobResourceUploader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobResourceUploader.java
index a044fc1fe78..03b29bdd16e 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobResourceUploader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobResourceUploader.java
@@ -27,8 +27,6 @@ import java.util.LinkedList;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
-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;
@@ -45,6 +43,8 @@ import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.api.records.URL;
 import org.apache.hadoop.yarn.client.api.SharedCacheClient;
 import org.apache.hadoop.yarn.exceptions.YarnException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.annotations.VisibleForTesting;
 
@@ -55,7 +55,8 @@ import com.google.common.annotations.VisibleForTesting;
 @Private
 @Unstable
 class JobResourceUploader {
-  protected static final Log LOG = LogFactory.getLog(JobResourceUploader.class);
+  protected static final Logger LOG =
+      LoggerFactory.getLogger(JobResourceUploader.class);
   private final boolean useWildcard;
   private final FileSystem jtFs;
   private SharedCacheClient scClient = null;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmissionFiles.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmissionFiles.java
index ae914c3e534..303aa138d9d 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmissionFiles.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmissionFiles.java
@@ -30,8 +30,8 @@ import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A utility to manage job submission files.
@@ -39,7 +39,8 @@ import org.apache.commons.logging.LogFactory;
 @InterfaceAudience.Private
 public class JobSubmissionFiles {
 
-  private final static Log LOG = LogFactory.getLog(JobSubmissionFiles.class);
+  private final static Logger LOG =
+      LoggerFactory.getLogger(JobSubmissionFiles.class);
 
   // job submission directory is private!
   final public static FsPermission JOB_DIR_PERMISSION =
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
index e5ff26d93d8..246986f3be1 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
@@ -36,8 +36,6 @@ import com.fasterxml.jackson.core.JsonParseException;
 import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.ObjectReader;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -49,6 +47,8 @@ import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.QueueACL;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import static org.apache.hadoop.mapred.QueueManager.toFullPropertyName;
 
@@ -69,7 +69,8 @@ import com.google.common.base.Charsets;
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 class JobSubmitter {
-  protected static final Log LOG = LogFactory.getLog(JobSubmitter.class);
+  protected static final Logger LOG =
+      LoggerFactory.getLogger(JobSubmitter.class);
   private static final ObjectReader READER =
       new ObjectMapper().readerFor(Map.class);
   private static final String SHUFFLE_KEYGEN_ALGORITHM = "HmacSHA1";
@@ -298,9 +299,7 @@ class JobSubmitter {
   private void printTokens(JobID jobId,
       Credentials credentials) throws IOException {
     LOG.info("Submitting tokens for job: " + jobId);
-    for (Token<?> token: credentials.getAllTokens()) {
-      LOG.info(token);
-    }
+    LOG.info("Executing with tokens: {}", credentials.getAllTokens());
   }
 
   @SuppressWarnings("unchecked")
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/AbstractCounters.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/AbstractCounters.java
index 4ab7e8990c6..a1c0f68c507 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/AbstractCounters.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/AbstractCounters.java
@@ -29,8 +29,6 @@ import java.util.Iterator;
 import java.util.Map;
 import java.util.concurrent.ConcurrentSkipListMap;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.io.Text;
@@ -41,6 +39,8 @@ import org.apache.hadoop.mapreduce.FileSystemCounter;
 import org.apache.hadoop.mapreduce.JobCounter;
 import org.apache.hadoop.mapreduce.TaskCounter;
 import org.apache.hadoop.util.StringInterner;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Iterators;
@@ -59,7 +59,8 @@ public abstract class AbstractCounters<C extends Counter,
                                        G extends CounterGroupBase<C>>
     implements Writable, Iterable<G> {
 
-  protected static final Log LOG = LogFactory.getLog("mapreduce.Counters");
+  protected static final Logger LOG =
+      LoggerFactory.getLogger("mapreduce.Counters");
 
   /**
    * A cache from enum values to the associated counter.
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FileSystemCounterGroup.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FileSystemCounterGroup.java
index e0e5b79d875..046368e96a6 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FileSystemCounterGroup.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FileSystemCounterGroup.java
@@ -33,8 +33,6 @@ import com.google.common.collect.AbstractIterator;
 import com.google.common.collect.Iterators;
 import com.google.common.collect.Maps;
 
-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.io.WritableUtils;
@@ -42,6 +40,8 @@ import org.apache.hadoop.mapreduce.Counter;
 import org.apache.hadoop.mapreduce.FileSystemCounter;
 import org.apache.hadoop.mapreduce.util.ResourceBundles;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * An abstract class to provide common implementation of the filesystem
@@ -56,7 +56,8 @@ public abstract class FileSystemCounterGroup<C extends Counter>
   static final int MAX_NUM_SCHEMES = 100; // intern/sanity check
   static final ConcurrentMap<String, String> schemes = Maps.newConcurrentMap();
   
-  private static final Log LOG = LogFactory.getLog(FileSystemCounterGroup.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(FileSystemCounterGroup.class);
 
   // C[] would need Array.newInstance which requires a Class<C> reference.
   // Just a few local casts probably worth not having to carry it around.
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FrameworkCounterGroup.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FrameworkCounterGroup.java
index b51f52882b2..5324223e013 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FrameworkCounterGroup.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/FrameworkCounterGroup.java
@@ -26,13 +26,13 @@ import java.io.IOException;
 import java.util.Arrays;
 import java.util.Iterator;
 
-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.io.WritableUtils;
 import org.apache.hadoop.mapreduce.Counter;
 import org.apache.hadoop.mapreduce.util.ResourceBundles;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.collect.AbstractIterator;
 import com.google.common.collect.Iterators;
@@ -47,7 +47,8 @@ import com.google.common.collect.Iterators;
 @InterfaceAudience.Private
 public abstract class FrameworkCounterGroup<T extends Enum<T>,
     C extends Counter> implements CounterGroupBase<C> {
-  private static final Log LOG = LogFactory.getLog(FrameworkCounterGroup.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(FrameworkCounterGroup.class);
   
   private final Class<T> enumClass; // for Enum.valueOf
   private final Object[] counters;  // local casts are OK and save a class ref
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java
index b1cb6dcf87e..46e4f1a1c0b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/EventWriter.java
@@ -27,8 +27,6 @@ import org.apache.avro.io.Encoder;
 import org.apache.avro.io.EncoderFactory;
 import org.apache.avro.specific.SpecificDatumWriter;
 import org.apache.avro.util.Utf8;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.FSDataOutputStream;
@@ -36,6 +34,8 @@ import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.mapreduce.Counter;
 import org.apache.hadoop.mapreduce.CounterGroup;
 import org.apache.hadoop.mapreduce.Counters;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.annotations.VisibleForTesting;
 
@@ -55,7 +55,7 @@ public class EventWriter {
   private DatumWriter<Event> writer =
     new SpecificDatumWriter<Event>(Event.class);
   private Encoder encoder;
-  private static final Log LOG = LogFactory.getLog(EventWriter.class);
+  private static final Logger LOG = LoggerFactory.getLogger(EventWriter.class);
 
   /**
    * avro encoding format supported by EventWriter.
@@ -112,7 +112,7 @@ public class EventWriter {
       out.close();
       out = null;
     } finally {
-      IOUtils.cleanup(LOG, out);
+      IOUtils.cleanupWithLogger(LOG, out);
     }
   }
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/JobHistoryParser.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/JobHistoryParser.java
index 28fcc92faaf..6efb4f7e02b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/JobHistoryParser.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/JobHistoryParser.java
@@ -24,8 +24,6 @@ import java.util.LinkedList;
 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;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
@@ -45,6 +43,8 @@ import org.apache.hadoop.security.authorize.AccessControlList;
 import org.apache.hadoop.util.StringInterner;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.ContainerId;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Default Parser for the JobHistory files. Typical usage is
@@ -56,7 +56,8 @@ import org.apache.hadoop.yarn.api.records.ContainerId;
 @InterfaceStability.Unstable
 public class JobHistoryParser implements HistoryEventHandler {
 
-  private static final Log LOG = LogFactory.getLog(JobHistoryParser.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(JobHistoryParser.class);
   
   private final FSDataInputStream in;
   private JobInfo info = null;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/BigDecimalSplitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/BigDecimalSplitter.java
index 325c375a250..dd1ebdbc257 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/BigDecimalSplitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/BigDecimalSplitter.java
@@ -24,8 +24,8 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
@@ -39,7 +39,8 @@ import org.apache.hadoop.mapreduce.MRJobConfig;
 @InterfaceAudience.Public
 @InterfaceStability.Evolving
 public class BigDecimalSplitter implements DBSplitter {
-  private static final Log LOG = LogFactory.getLog(BigDecimalSplitter.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(BigDecimalSplitter.class);
 
   public List<InputSplit> split(Configuration conf, ResultSet results, String colName)
       throws SQLException {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBInputFormat.java
index 78c3a0fd8e8..4c1e185987c 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBInputFormat.java
@@ -30,8 +30,6 @@ import java.sql.Statement;
 import java.util.ArrayList;
 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.InterfaceStability;
 import org.apache.hadoop.conf.Configurable;
@@ -46,6 +44,8 @@ import org.apache.hadoop.mapreduce.MRJobConfig;
 import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A InputFormat that reads input data from an SQL table.
@@ -61,7 +61,8 @@ import org.apache.hadoop.util.StringUtils;
 public class DBInputFormat<T extends DBWritable>
     extends InputFormat<LongWritable, T> implements Configurable {
 
-  private static final Log LOG = LogFactory.getLog(DBInputFormat.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(DBInputFormat.class);
   
   protected String dbProductName = "DEFAULT";
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBOutputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBOutputFormat.java
index c222bf5ba41..b6f151ac902 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBOutputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBOutputFormat.java
@@ -24,8 +24,6 @@ import java.sql.DatabaseMetaData;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.mapreduce.Job;
@@ -37,6 +35,8 @@ import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A OutputFormat that sends the reduce output to a SQL table.
@@ -51,7 +51,8 @@ import org.apache.hadoop.util.StringUtils;
 public class DBOutputFormat<K  extends DBWritable, V> 
 extends OutputFormat<K,V> {
 
-  private static final Log LOG = LogFactory.getLog(DBOutputFormat.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(DBOutputFormat.class);
   public String dbProductName = "DEFAULT";
 
   public void checkOutputSpecs(JobContext context) 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBRecordReader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBRecordReader.java
index 5ec4c2647a0..f780715e7ac 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBRecordReader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBRecordReader.java
@@ -30,8 +30,6 @@ import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Writable;
 import org.apache.hadoop.mapreduce.InputFormat;
@@ -45,6 +43,8 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configurable;
 import org.apache.hadoop.conf.Configuration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A RecordReader that reads records from a SQL table.
@@ -56,7 +56,8 @@ import org.apache.hadoop.conf.Configuration;
 public class DBRecordReader<T extends DBWritable> extends
     RecordReader<LongWritable, T> {
 
-  private static final Log LOG = LogFactory.getLog(DBRecordReader.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(DBRecordReader.class);
 
   private ResultSet results = null;
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DataDrivenDBInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DataDrivenDBInputFormat.java
index 753c880587e..d1c61c4dcb4 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DataDrivenDBInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DataDrivenDBInputFormat.java
@@ -31,8 +31,8 @@ import java.sql.Types;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
@@ -61,7 +61,8 @@ import org.apache.hadoop.conf.Configuration;
 public class DataDrivenDBInputFormat<T extends DBWritable>
     extends DBInputFormat<T> implements Configurable {
 
-  private static final Log LOG = LogFactory.getLog(DataDrivenDBInputFormat.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(DataDrivenDBInputFormat.class);
 
   /** If users are providing their own query, the following string is expected to
       appear in the WHERE clause, which will be substituted with a pair of conditions
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DataDrivenDBRecordReader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DataDrivenDBRecordReader.java
index 9f2cc2afd49..447a8fd55b4 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DataDrivenDBRecordReader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DataDrivenDBRecordReader.java
@@ -30,8 +30,6 @@ import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Writable;
 import org.apache.hadoop.mapreduce.InputFormat;
@@ -45,6 +43,8 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configurable;
 import org.apache.hadoop.conf.Configuration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A RecordReader that reads records from a SQL table,
@@ -56,7 +56,8 @@ import org.apache.hadoop.conf.Configuration;
 @InterfaceStability.Evolving
 public class DataDrivenDBRecordReader<T extends DBWritable> extends DBRecordReader<T> {
 
-  private static final Log LOG = LogFactory.getLog(DataDrivenDBRecordReader.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(DataDrivenDBRecordReader.class);
 
   private String dbProductName; // database manufacturer string.
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DateSplitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DateSplitter.java
index 6be5b5cf255..b0866f56cf0 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DateSplitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DateSplitter.java
@@ -27,8 +27,8 @@ import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
@@ -45,7 +45,7 @@ import org.apache.hadoop.mapreduce.MRJobConfig;
 @InterfaceStability.Evolving
 public class DateSplitter extends IntegerSplitter {
 
-  private static final Log LOG = LogFactory.getLog(DateSplitter.class);
+  private static final Logger LOG = LoggerFactory.getLogger(DateSplitter.class);
 
   public List<InputSplit> split(Configuration conf, ResultSet results, String colName)
       throws SQLException {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/FloatSplitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/FloatSplitter.java
index d61ee8b27de..1add4e91f2e 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/FloatSplitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/FloatSplitter.java
@@ -23,8 +23,8 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
@@ -39,7 +39,8 @@ import org.apache.hadoop.mapreduce.MRJobConfig;
 @InterfaceStability.Evolving
 public class FloatSplitter implements DBSplitter {
 
-  private static final Log LOG = LogFactory.getLog(FloatSplitter.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(FloatSplitter.class);
 
   private static final double MIN_INCREMENT = 10000 * Double.MIN_VALUE;
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/OracleDBRecordReader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/OracleDBRecordReader.java
index 61ff15656f8..44a7616cd89 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/OracleDBRecordReader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/OracleDBRecordReader.java
@@ -26,8 +26,8 @@ import java.lang.reflect.Method;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A RecordReader that reads records from an Oracle SQL table.
@@ -39,7 +39,8 @@ public class OracleDBRecordReader<T extends DBWritable> extends DBRecordReader<T
   /** Configuration key to set to a timezone string. */
   public static final String SESSION_TIMEZONE_KEY = "oracle.sessionTimeZone";
 
-  private static final Log LOG = LogFactory.getLog(OracleDBRecordReader.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(OracleDBRecordReader.class);
 
   public OracleDBRecordReader(DBInputFormat.DBInputSplit split, 
       Class<T> inputClass, Configuration conf, Connection conn, DBConfiguration dbConfig,
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/OracleDataDrivenDBInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/OracleDataDrivenDBInputFormat.java
index a02471e482a..981b040e10a 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/OracleDataDrivenDBInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/OracleDataDrivenDBInputFormat.java
@@ -31,9 +31,6 @@ import java.sql.Types;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.Writable;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/TextSplitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/TextSplitter.java
index a9a90974ad8..a5c6f56072d 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/TextSplitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/TextSplitter.java
@@ -25,8 +25,8 @@ import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
@@ -41,7 +41,7 @@ import org.apache.hadoop.mapreduce.MRJobConfig;
 @InterfaceStability.Evolving
 public class TextSplitter extends BigDecimalSplitter {
 
-  private static final Log LOG = LogFactory.getLog(TextSplitter.class);
+  private static final Logger LOG = LoggerFactory.getLogger(TextSplitter.class);
 
   /**
    * This method needs to determine the splits between two user-provided strings.
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/fieldsel/FieldSelectionMapper.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/fieldsel/FieldSelectionMapper.java
index fbc1f606b04..c0880363b4f 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/fieldsel/FieldSelectionMapper.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/fieldsel/FieldSelectionMapper.java
@@ -22,14 +22,14 @@ import java.io.IOException;
 import java.util.ArrayList;
 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.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.Mapper;
 import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This class implements a mapper class that can be used to perform
@@ -73,7 +73,8 @@ public class FieldSelectionMapper<K, V>
 
   private int allMapValueFieldsFrom = -1;
 
-  public static final Log LOG = LogFactory.getLog("FieldSelectionMapReduce");
+  public static final Logger LOG =
+      LoggerFactory.getLogger("FieldSelectionMapReduce");
 
   public void setup(Context context) 
       throws IOException, InterruptedException {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/fieldsel/FieldSelectionReducer.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/fieldsel/FieldSelectionReducer.java
index 5feeaf4692c..c04fc85ae50 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/fieldsel/FieldSelectionReducer.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/fieldsel/FieldSelectionReducer.java
@@ -22,13 +22,13 @@ import java.io.IOException;
 import java.util.ArrayList;
 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.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.Reducer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This class implements a reducer class that can be used to perform field
@@ -70,7 +70,8 @@ public class FieldSelectionReducer<K, V>
 
   private int allReduceValueFieldsFrom = -1;
 
-  public static final Log LOG = LogFactory.getLog("FieldSelectionMapReduce");
+  public static final Logger LOG =
+      LoggerFactory.getLogger("FieldSelectionMapReduce");
 
   public void setup(Context context) 
       throws IOException, InterruptedException {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.java
index 8f9699e11b1..c7a737cf874 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.java
@@ -30,8 +30,6 @@ import java.util.Set;
 import java.util.Iterator;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -51,6 +49,8 @@ import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.net.NodeBase;
 import org.apache.hadoop.net.NetworkTopology;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.HashMultiset;
@@ -84,7 +84,8 @@ import com.google.common.collect.Multiset;
 public abstract class CombineFileInputFormat<K, V>
   extends FileInputFormat<K, V> {
   
-  private static final Log LOG = LogFactory.getLog(CombineFileInputFormat.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(CombineFileInputFormat.class);
   
   public static final String SPLIT_MINSIZE_PERNODE = 
     "mapreduce.input.fileinputformat.split.minsize.per.node";
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FileInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FileInputFormat.java
index ebbc223d243..9868e8ecde0 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FileInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FileInputFormat.java
@@ -23,8 +23,6 @@ import java.util.ArrayList;
 import java.util.List;
 
 import java.util.concurrent.TimeUnit;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -45,6 +43,8 @@ import org.apache.hadoop.mapreduce.security.TokenCache;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.StopWatch;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.collect.Lists;
 
@@ -80,7 +80,8 @@ public abstract class FileInputFormat<K, V> extends InputFormat<K, V> {
       "mapreduce.input.fileinputformat.list-status.num-threads";
   public static final int DEFAULT_LIST_STATUS_NUM_THREADS = 1;
 
-  private static final Log LOG = LogFactory.getLog(FileInputFormat.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(FileInputFormat.class);
 
   private static final double SPLIT_SLOP = 1.1;   // 10% slop
   
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FixedLengthRecordReader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FixedLengthRecordReader.java
index 70fa7b2aec3..71b2b79bea0 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FixedLengthRecordReader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FixedLengthRecordReader.java
@@ -38,8 +38,8 @@ import org.apache.hadoop.io.compress.Decompressor;
 import org.apache.hadoop.mapreduce.InputSplit;
 import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
-import org.apache.commons.logging.LogFactory;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A reader to read fixed length records from a split.  Record offset is
@@ -49,8 +49,8 @@ import org.apache.commons.logging.Log;
 @InterfaceStability.Evolving
 public class FixedLengthRecordReader
     extends RecordReader<LongWritable, BytesWritable> {
-  private static final Log LOG 
-      = LogFactory.getLog(FixedLengthRecordReader.class);
+  private static final Logger LOG
+      = LoggerFactory.getLogger(FixedLengthRecordReader.class);
 
   private int recordLength;
   private long start;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/LineRecordReader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/LineRecordReader.java
index 9e1ca2a6391..ca85982e0ae 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/LineRecordReader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/LineRecordReader.java
@@ -38,8 +38,8 @@ import org.apache.hadoop.io.compress.Decompressor;
 import org.apache.hadoop.mapreduce.InputSplit;
 import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
-import org.apache.commons.logging.LogFactory;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Treats keys as offset in file and value as line. 
@@ -47,7 +47,8 @@ import org.apache.commons.logging.Log;
 @InterfaceAudience.LimitedPrivate({"MapReduce", "Pig"})
 @InterfaceStability.Evolving
 public class LineRecordReader extends RecordReader<LongWritable, Text> {
-  private static final Log LOG = LogFactory.getLog(LineRecordReader.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(LineRecordReader.class);
   public static final String MAX_LINE_LENGTH = 
     "mapreduce.input.linerecordreader.line.maxlength";
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFilter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFilter.java
index 4620fa33825..098a02b5cda 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFilter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFilter.java
@@ -26,8 +26,6 @@ import java.security.NoSuchAlgorithmException;
 import java.util.regex.Pattern;
 import java.util.regex.PatternSyntaxException;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configurable;
@@ -39,6 +37,8 @@ import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A class that allows a map/red job to work on a sample of sequence files.
@@ -48,7 +48,8 @@ import org.apache.hadoop.util.ReflectionUtils;
 @InterfaceStability.Stable
 public class SequenceFileInputFilter<K, V>
     extends SequenceFileInputFormat<K, V> {
-  public static final Log LOG = LogFactory.getLog(FileInputFormat.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(FileInputFormat.class);
   
   final public static String FILTER_CLASS = 
     "mapreduce.input.sequencefileinputfilter.class";
@@ -260,7 +261,7 @@ public class SequenceFileInputFilter<K, V>
         if (hashcode / frequency * frequency == hashcode)
           return true;
       } catch(Exception e) {
-        LOG.warn(e);
+        LOG.warn(e.toString());
         throw new RuntimeException(e);
       }
       return false;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/ControlledJob.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/ControlledJob.java
index f2b47345b2b..16ba22bfb60 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/ControlledJob.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/ControlledJob.java
@@ -23,8 +23,6 @@ import java.io.IOException;
 import java.util.ArrayList;
 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.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -34,6 +32,8 @@ import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.JobID;
 import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** 
  *  This class encapsulates a MapReduce job and its dependency. It monitors 
@@ -49,7 +49,8 @@ import org.apache.hadoop.util.StringUtils;
 @InterfaceAudience.Public
 @InterfaceStability.Evolving
 public class ControlledJob {
-  private static final Log LOG = LogFactory.getLog(ControlledJob.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(ControlledJob.class);
 
   // A job will be in one of the following states
   public enum State {SUCCESS, WAITING, RUNNING, READY, FAILED,
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/JobControl.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/JobControl.java
index 4c7114a4f26..7c65dd39f9d 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/JobControl.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/JobControl.java
@@ -27,13 +27,13 @@ import java.util.List;
 import java.util.HashMap;
 import java.util.HashSet;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.mapred.jobcontrol.Job;
 import org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob.State;
 import org.apache.hadoop.util.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** 
  *  This class encapsulates a set of MapReduce jobs and its dependency.
@@ -55,7 +55,7 @@ import org.apache.hadoop.util.StringUtils;
 @InterfaceAudience.Public
 @InterfaceStability.Evolving
 public class JobControl implements Runnable {
-  private static final Log LOG = LogFactory.getLog(JobControl.class);
+  private static final Logger LOG = LoggerFactory.getLogger(JobControl.class);
 
   // The thread can be in one of the following state
   public enum ThreadState {RUNNING, SUSPENDED,STOPPED, STOPPING, READY};
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/map/MultithreadedMapper.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/map/MultithreadedMapper.java
index 733b18c9ec4..382ed959f12 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/map/MultithreadedMapper.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/map/MultithreadedMapper.java
@@ -33,8 +33,8 @@ import org.apache.hadoop.mapreduce.RecordWriter;
 import org.apache.hadoop.mapreduce.StatusReporter;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.task.MapContextImpl;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -61,7 +61,8 @@ import java.util.List;
 public class MultithreadedMapper<K1, V1, K2, V2> 
   extends Mapper<K1, V1, K2, V2> {
 
-  private static final Log LOG = LogFactory.getLog(MultithreadedMapper.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(MultithreadedMapper.class);
   public static String NUM_THREADS = "mapreduce.mapper.multithreadedmapper.threads";
   public static String MAP_CLASS = "mapreduce.mapper.multithreadedmapper.mapclass";
   
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputCommitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputCommitter.java
index 0061406f7ea..325b2e7a50b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputCommitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputCommitter.java
@@ -21,8 +21,6 @@ package org.apache.hadoop.mapreduce.lib.output;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 
-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.InterfaceStability;
@@ -40,6 +38,8 @@ import org.apache.hadoop.mapreduce.TaskAttemptID;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** An {@link OutputCommitter} that commits files specified 
  * in job output directory i.e. ${mapreduce.output.fileoutputformat.outputdir}.
@@ -47,7 +47,8 @@ import com.google.common.base.Preconditions;
 @InterfaceAudience.Public
 @InterfaceStability.Stable
 public class FileOutputCommitter extends PathOutputCommitter {
-  private static final Log LOG = LogFactory.getLog(FileOutputCommitter.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(FileOutputCommitter.class);
 
   /** 
    * Name of directory where pending data is placed.  Data that has not been
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/PartialFileOutputCommitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/PartialFileOutputCommitter.java
index 238a2eacd4f..c4e397d36c3 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/PartialFileOutputCommitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/PartialFileOutputCommitter.java
@@ -20,8 +20,6 @@ package org.apache.hadoop.mapreduce.lib.output;
 
 import java.io.IOException;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -33,6 +31,8 @@ import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.TaskAttemptID;
 import org.apache.hadoop.mapreduce.TaskID;
 import org.apache.hadoop.mapreduce.task.annotation.Checkpointable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.annotations.VisibleForTesting;
 
@@ -45,8 +45,8 @@ import com.google.common.annotations.VisibleForTesting;
 public class PartialFileOutputCommitter
     extends FileOutputCommitter implements PartialOutputCommitter {
 
-  private static final Log LOG =
-    LogFactory.getLog(PartialFileOutputCommitter.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(PartialFileOutputCommitter.class);
 
 
   public PartialFileOutputCommitter(Path outputPath,
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/InputSampler.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/InputSampler.java
index df4e9195ec2..3c2aecef076 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/InputSampler.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/InputSampler.java
@@ -24,8 +24,6 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.Random;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -47,6 +45,8 @@ import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.Tool;
 import org.apache.hadoop.util.ToolRunner;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Utility for collecting samples and writing a partition file for
@@ -56,7 +56,7 @@ import org.apache.hadoop.util.ToolRunner;
 @InterfaceStability.Stable
 public class InputSampler<K,V> extends Configured implements Tool  {
 
-  private static final Log LOG = LogFactory.getLog(InputSampler.class);
+  private static final Logger LOG = LoggerFactory.getLogger(InputSampler.class);
 
   static int printUsage() {
     System.out.println("sampler -r <reduces>\n" +
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/KeyFieldBasedPartitioner.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/KeyFieldBasedPartitioner.java
index 73f6a344ce4..69377e73e6d 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/KeyFieldBasedPartitioner.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/KeyFieldBasedPartitioner.java
@@ -21,8 +21,6 @@ package org.apache.hadoop.mapreduce.lib.partition;
 import java.io.UnsupportedEncodingException;
 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.InterfaceStability;
 import org.apache.hadoop.conf.Configurable;
@@ -32,6 +30,8 @@ import org.apache.hadoop.mapreduce.JobContext;
 import org.apache.hadoop.mapreduce.MRJobConfig;
 import org.apache.hadoop.mapreduce.Partitioner;
 import org.apache.hadoop.mapreduce.lib.partition.KeyFieldHelper.KeyDescription;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
  /**   
   *  Defines a way to partition keys based on certain key fields (also see
@@ -51,7 +51,7 @@ import org.apache.hadoop.mapreduce.lib.partition.KeyFieldHelper.KeyDescription;
 public class KeyFieldBasedPartitioner<K2, V2> extends Partitioner<K2, V2> 
     implements Configurable {
 
-  private static final Log LOG = LogFactory.getLog(
+  private static final Logger LOG = LoggerFactory.getLogger(
                                    KeyFieldBasedPartitioner.class.getName());
   public static String PARTITIONER_OPTIONS = 
     "mapreduce.partition.keypartitioner.options";
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/TotalOrderPartitioner.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/TotalOrderPartitioner.java
index f2619d77905..68de7a9f5c2 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/TotalOrderPartitioner.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/TotalOrderPartitioner.java
@@ -23,8 +23,6 @@ import java.lang.reflect.Array;
 import java.util.ArrayList;
 import java.util.Arrays;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configurable;
@@ -40,6 +38,8 @@ import org.apache.hadoop.io.WritableComparable;
 import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.Partitioner;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Partitioner effecting a total order by reading split points from
@@ -59,7 +59,8 @@ public class TotalOrderPartitioner<K,V>
   public static final String NATURAL_ORDER = 
     "mapreduce.totalorderpartitioner.naturalorder";
   Configuration conf;
-  private static final Log LOG = LogFactory.getLog(TotalOrderPartitioner.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(TotalOrderPartitioner.class);
 
   public TotalOrderPartitioner() { }
 
@@ -311,7 +312,7 @@ public class TotalOrderPartitioner<K,V>
       reader.close();
       reader = null;
     } finally {
-      IOUtils.cleanup(LOG, reader);
+      IOUtils.cleanupWithLogger(LOG, reader);
     }
     return parts.toArray((K[])Array.newInstance(keyClass, parts.size()));
   }
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/security/SecureShuffleUtils.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/security/SecureShuffleUtils.java
index 60919d0f792..b0831560826 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/security/SecureShuffleUtils.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/security/SecureShuffleUtils.java
@@ -27,12 +27,12 @@ import javax.crypto.SecretKey;
 import javax.servlet.http.HttpServletRequest;
 
 import org.apache.commons.codec.binary.Base64;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.io.WritableComparator;
 import org.apache.hadoop.mapreduce.security.token.JobTokenSecretManager;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.base.Charsets;
 
@@ -44,7 +44,8 @@ import com.google.common.base.Charsets;
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 public class SecureShuffleUtils {
-  private static final Log LOG = LogFactory.getLog(SecureShuffleUtils.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(SecureShuffleUtils.class);
   
   public static final String HTTP_HEADER_URL_HASH = "UrlHash";
   public static final String HTTP_HEADER_REPLY_URL_HASH = "ReplyHash";
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/security/TokenCache.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/security/TokenCache.java
index 78f6c1675e5..12fced9e0c3 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/security/TokenCache.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/security/TokenCache.java
@@ -22,8 +22,6 @@ import java.io.IOException;
 import java.util.HashSet;
 import java.util.Set;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -38,6 +36,8 @@ import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.security.token.TokenIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 /**
@@ -50,7 +50,7 @@ import org.apache.hadoop.security.token.TokenIdentifier;
 @InterfaceStability.Evolving
 public class TokenCache {
   
-  private static final Log LOG = LogFactory.getLog(TokenCache.class);
+  private static final Logger LOG = LoggerFactory.getLogger(TokenCache.class);
 
   
   /**
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/split/JobSplitWriter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/split/JobSplitWriter.java
index eb10ae50694..76234bd17fe 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/split/JobSplitWriter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/split/JobSplitWriter.java
@@ -40,8 +40,8 @@ import org.apache.hadoop.mapreduce.split.JobSplit.SplitMetaInfo;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * The class that is used by the Job clients to write splits (both the meta
@@ -51,7 +51,8 @@ import org.apache.commons.logging.LogFactory;
 @InterfaceStability.Unstable
 public class JobSplitWriter {
 
-  private static final Log LOG = LogFactory.getLog(JobSplitWriter.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(JobSplitWriter.class);
   private static final int splitVersion = JobSplit.META_SPLIT_VERSION;
   private static final byte[] SPLIT_FILE_HEADER;
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/EventFetcher.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/EventFetcher.java
index 313e9f5f329..0e28c3b41c0 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/EventFetcher.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/EventFetcher.java
@@ -19,18 +19,18 @@ package org.apache.hadoop.mapreduce.task.reduce;
 
 import java.io.IOException;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.mapred.MapTaskCompletionEventsUpdate;
 import org.apache.hadoop.mapred.TaskCompletionEvent;
 import org.apache.hadoop.mapred.TaskUmbilicalProtocol;
 import org.apache.hadoop.mapreduce.TaskAttemptID;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 class EventFetcher<K,V> extends Thread {
   private static final long SLEEP_TIME = 1000;
   private static final int MAX_RETRIES = 10;
   private static final int RETRY_PERIOD = 5000;
-  private static final Log LOG = LogFactory.getLog(EventFetcher.class);
+  private static final Logger LOG = LoggerFactory.getLogger(EventFetcher.class);
 
   private final TaskAttemptID reduce;
   private final TaskUmbilicalProtocol umbilical;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/Fetcher.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/Fetcher.java
index ce1551b3215..5b316c1c2d5 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/Fetcher.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/Fetcher.java
@@ -35,8 +35,6 @@ import java.util.Set;
 import javax.crypto.SecretKey;
 import javax.net.ssl.HttpsURLConnection;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.mapred.Counters;
 import org.apache.hadoop.mapred.JobConf;
@@ -49,12 +47,14 @@ import org.apache.hadoop.mapreduce.CryptoUtils;
 import org.apache.hadoop.security.ssl.SSLFactory;
 import org.apache.hadoop.util.Time;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.annotations.VisibleForTesting;
 
 class Fetcher<K,V> extends Thread {
   
-  private static final Log LOG = LogFactory.getLog(Fetcher.class);
+  private static final Logger LOG = LoggerFactory.getLogger(Fetcher.class);
   
   /** Number of ms before timing out a copy */
   private static final int DEFAULT_STALLED_COPY_TIMEOUT = 3 * 60 * 1000;
@@ -341,7 +341,7 @@ class Fetcher<K,V> extends Thread {
         try {
           failedTasks = copyMapOutput(host, input, remaining, fetchRetryEnabled);
         } catch (IOException e) {
-          IOUtils.cleanup(LOG, input);
+          IOUtils.cleanupWithLogger(LOG, input);
           //
           // Setup connection again if disconnected by NM
           connection.disconnect();
@@ -371,7 +371,7 @@ class Fetcher<K,V> extends Thread {
       input = null;
     } finally {
       if (input != null) {
-        IOUtils.cleanup(LOG, input);
+        IOUtils.cleanupWithLogger(LOG, input);
         input = null;
       }
       for (TaskAttemptID left : remaining) {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/InMemoryMapOutput.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/InMemoryMapOutput.java
index 9b61ad5e3bd..5efd875ce8d 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/InMemoryMapOutput.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/InMemoryMapOutput.java
@@ -23,9 +23,6 @@ import java.io.IOException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-
 import org.apache.hadoop.conf.Configuration;
 
 import org.apache.hadoop.io.BoundedByteArrayOutputStream;
@@ -40,10 +37,14 @@ import org.apache.hadoop.mapred.Reporter;
 
 import org.apache.hadoop.mapreduce.TaskAttemptID;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 class InMemoryMapOutput<K, V> extends IFileWrappedMapOutput<K, V> {
-  private static final Log LOG = LogFactory.getLog(InMemoryMapOutput.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(InMemoryMapOutput.class);
   private final byte[] memory;
   private BoundedByteArrayOutputStream byteStream;
   // Decompression of map-outputs
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/LocalFetcher.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/LocalFetcher.java
index f45742fe5dd..90160cfa07c 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/LocalFetcher.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/LocalFetcher.java
@@ -25,8 +25,6 @@ import java.util.Set;
 
 import javax.crypto.SecretKey;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.fs.FSDataInputStream;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -38,6 +36,8 @@ import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.mapred.SpillRecord;
 import org.apache.hadoop.mapreduce.TaskAttemptID;
 import org.apache.hadoop.mapreduce.CryptoUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * LocalFetcher is used by LocalJobRunner to perform a local filesystem
@@ -45,7 +45,7 @@ import org.apache.hadoop.mapreduce.CryptoUtils;
  */
 class LocalFetcher<K,V> extends Fetcher<K, V> {
 
-  private static final Log LOG = LogFactory.getLog(LocalFetcher.class);
+  private static final Logger LOG = LoggerFactory.getLogger(LocalFetcher.class);
 
   private static final MapHost LOCALHOST = new MapHost("local", "local");
 
@@ -156,7 +156,7 @@ class LocalFetcher<K,V> extends Fetcher<K, V> {
       mapOutput.shuffle(LOCALHOST, inStream, compressedLength,
           decompressedLength, metrics, reporter);
     } finally {
-      IOUtils.cleanup(LOG, inStream);
+      IOUtils.cleanupWithLogger(LOG, inStream);
     }
 
     scheduler.copySucceeded(mapTaskId, LOCALHOST, compressedLength, 0, 0,
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeManagerImpl.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeManagerImpl.java
index f26c10ac592..f01b24cc1e7 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeManagerImpl.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeManagerImpl.java
@@ -25,8 +25,6 @@ import java.util.List;
 import java.util.Set;
 import java.util.TreeSet;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.ChecksumFileSystem;
@@ -59,6 +57,8 @@ import org.apache.hadoop.mapreduce.CryptoUtils;
 import org.apache.hadoop.mapreduce.task.reduce.MapOutput.MapOutputComparator;
 import org.apache.hadoop.util.Progress;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.annotations.VisibleForTesting;
 
@@ -67,7 +67,8 @@ import com.google.common.annotations.VisibleForTesting;
 @InterfaceStability.Unstable
 public class MergeManagerImpl<K, V> implements MergeManager<K, V> {
   
-  private static final Log LOG = LogFactory.getLog(MergeManagerImpl.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(MergeManagerImpl.class);
   
   /* Maximum percentage of the in-memory limit that a single shuffle can 
    * consume*/ 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeThread.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeThread.java
index 5db353f99c2..4a40cb17d46 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeThread.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeThread.java
@@ -25,12 +25,12 @@ import java.util.List;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicInteger;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 abstract class MergeThread<T,K,V> extends Thread {
   
-  private static final Log LOG = LogFactory.getLog(MergeThread.class);
+  private static final Logger LOG = LoggerFactory.getLogger(MergeThread.class);
 
   private AtomicInteger numPending = new AtomicInteger(0);
   private LinkedList<List<T>> pendingToBeMerged;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/OnDiskMapOutput.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/OnDiskMapOutput.java
index f22169d282a..98d7a57181b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/OnDiskMapOutput.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/OnDiskMapOutput.java
@@ -23,8 +23,8 @@ import java.io.OutputStream;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -45,7 +45,8 @@ import com.google.common.annotations.VisibleForTesting;
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 class OnDiskMapOutput<K, V> extends IFileWrappedMapOutput<K, V> {
-  private static final Log LOG = LogFactory.getLog(OnDiskMapOutput.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(OnDiskMapOutput.class);
   private final FileSystem fs;
   private final Path tmpOutputPath;
   private final Path outputPath;
@@ -120,7 +121,7 @@ class OnDiskMapOutput<K, V> extends IFileWrappedMapOutput<K, V> {
       disk.close();
     } catch (IOException ioe) {
       // Close the streams
-      IOUtils.cleanup(LOG, disk);
+      IOUtils.cleanupWithLogger(LOG, disk);
 
       // Re-throw
       throw ioe;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/ShuffleSchedulerImpl.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/ShuffleSchedulerImpl.java
index d9ce32cefa1..3dc7cce34ea 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/ShuffleSchedulerImpl.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/ShuffleSchedulerImpl.java
@@ -36,8 +36,6 @@ import java.util.concurrent.Delayed;
 import java.util.concurrent.TimeUnit;
 
 import com.google.common.annotations.VisibleForTesting;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.io.IntWritable;
@@ -51,6 +49,8 @@ import org.apache.hadoop.mapreduce.TaskID;
 import org.apache.hadoop.mapreduce.task.reduce.MapHost.State;
 import org.apache.hadoop.util.Progress;
 import org.apache.hadoop.util.Time;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
@@ -62,7 +62,8 @@ public class ShuffleSchedulerImpl<K,V> implements ShuffleScheduler<K,V> {
     }
   };
 
-  private static final Log LOG = LogFactory.getLog(ShuffleSchedulerImpl.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(ShuffleSchedulerImpl.class);
   private static final int MAX_MAPS_AT_ONCE = 20;
   private static final long INITIAL_PENALTY = 10000;
   private static final float PENALTY_GROWTH_RATE = 1.3f;
@@ -389,7 +390,7 @@ public class ShuffleSchedulerImpl<K,V> implements ShuffleScheduler<K,V> {
         failureCounts.size() == (totalMaps - doneMaps))
         && !reducerHealthy
         && (!reducerProgressedEnough || reducerStalled)) {
-      LOG.fatal("Shuffle failed with too many fetch failures " +
+      LOG.error("Shuffle failed with too many fetch failures " +
       "and insufficient progress!");
       String errorMsg = "Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.";
       reporter.reportException(new IOException(errorMsg));
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/tools/CLI.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/tools/CLI.java
index 33f8658988d..ca59dba0974 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/tools/CLI.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/tools/CLI.java
@@ -32,8 +32,6 @@ import java.util.Arrays;
 
 import com.google.common.annotations.VisibleForTesting;
 import org.apache.commons.lang.StringUtils;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
@@ -63,6 +61,8 @@ import org.apache.hadoop.util.ExitUtil;
 import org.apache.hadoop.util.Tool;
 import org.apache.hadoop.util.ToolRunner;
 import org.apache.hadoop.yarn.logaggregation.LogCLIHelpers;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.base.Charsets;
 
@@ -72,7 +72,7 @@ import com.google.common.base.Charsets;
 @InterfaceAudience.Public
 @InterfaceStability.Stable
 public class CLI extends Configured implements Tool {
-  private static final Log LOG = LogFactory.getLog(CLI.class);
+  private static final Logger LOG = LoggerFactory.getLogger(CLI.class);
   protected Cluster cluster;
   private final Set<String> taskStates = new HashSet<String>(
               Arrays.asList("pending", "running", "completed", "failed", "killed"));
@@ -167,7 +167,7 @@ public class CLI extends Configured implements Tool {
         try {
           jpvalue = Integer.parseInt(argv[2]);
         } catch (NumberFormatException ne) {
-          LOG.info(ne);
+          LOG.info("Error number format: ", ne);
           displayUsage(cmd);
           return exitCode;
         }
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcessTree.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcessTree.java
index 6cf053edf0a..93cff0f95c5 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcessTree.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcessTree.java
@@ -21,13 +21,12 @@ package org.apache.hadoop.mapreduce.util;
 import java.io.IOException;
 import java.util.Arrays;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.util.Shell.ExitCodeException;
 import org.apache.hadoop.util.Shell.ShellCommandExecutor;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /** 
  * Process tree related operations
@@ -36,7 +35,7 @@ import org.apache.hadoop.util.Shell.ShellCommandExecutor;
 @InterfaceStability.Unstable
 public class ProcessTree {
 
-  private static final Log LOG = LogFactory.getLog(ProcessTree.class);
+  private static final Logger LOG = LoggerFactory.getLogger(ProcessTree.class);
 
   public static final long DEFAULT_SLEEPTIME_BEFORE_SIGKILL = 5000L;
 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestCounters.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestCounters.java
index 010f0f31ea6..a3e49079621 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestCounters.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestCounters.java
@@ -29,8 +29,6 @@ import java.util.Random;
 
 import org.junit.Assert;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.mapred.Counters.Counter;
 import org.apache.hadoop.mapred.Counters.CountersExceededException;
 import org.apache.hadoop.mapred.Counters.Group;
@@ -41,6 +39,8 @@ import org.apache.hadoop.mapreduce.TaskCounter;
 import org.apache.hadoop.mapreduce.counters.FrameworkCounterGroup;
 import org.apache.hadoop.mapreduce.counters.CounterGroupFactory.FrameworkGroupFactory;
 import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * TestCounters checks the sanity and recoverability of {@code Counters}
@@ -48,7 +48,7 @@ import org.junit.Test;
 public class TestCounters {
   enum myCounters {TEST1, TEST2};
   private static final long MAX_VALUE = 10;
-  private static final Log LOG = LogFactory.getLog(TestCounters.class);
+  private static final Logger LOG = LoggerFactory.getLogger(TestCounters.class);
   
   static final Enum<?> FRAMEWORK_COUNTER = TaskCounter.CPU_MILLISECONDS;
   static final long FRAMEWORK_COUNTER_VALUE = 8;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestFileInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestFileInputFormat.java
index 16d7cfc8417..d322011068f 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestFileInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestFileInputFormat.java
@@ -23,8 +23,6 @@ import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.BlockLocation;
 import org.apache.hadoop.fs.FileStatus;
@@ -42,13 +40,16 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.collect.Lists;
 
 @RunWith(value = Parameterized.class)
 public class TestFileInputFormat {
   
-  private static final Log LOG = LogFactory.getLog(TestFileInputFormat.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(TestFileInputFormat.class);
   
   private static String testTmpDir = System.getProperty("test.build.data", "/tmp");
   private static final Path TEST_ROOT_DIR = new Path(testTmpDir, "TestFIF");
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/filecache/TestClientDistributedCacheManager.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/filecache/TestClientDistributedCacheManager.java
index 5212b9f0434..b427f399a0d 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/filecache/TestClientDistributedCacheManager.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/filecache/TestClientDistributedCacheManager.java
@@ -24,8 +24,6 @@ import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.FileSystem;
@@ -42,10 +40,12 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 import org.junit.Before;
 import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class TestClientDistributedCacheManager {
-  private static final Log LOG = LogFactory.getLog(
-      TestClientDistributedCacheManager.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(TestClientDistributedCacheManager.class);
   
   private static final Path TEST_ROOT_DIR = new Path(
       System.getProperty("test.build.data",
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/jobhistory/TestHistoryViewerPrinter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/jobhistory/TestHistoryViewerPrinter.java
index 2e2dbe1481e..588500c0b4b 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/jobhistory/TestHistoryViewerPrinter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/jobhistory/TestHistoryViewerPrinter.java
@@ -17,8 +17,6 @@
  */
 package org.apache.hadoop.mapreduce.jobhistory;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.mapred.TaskAttemptID;
 import org.apache.hadoop.mapred.TaskID;
 import org.apache.hadoop.mapred.TaskStatus;
@@ -30,6 +28,8 @@ import org.junit.Assert;
 import org.junit.Test;
 import org.skyscreamer.jsonassert.JSONAssert;
 import org.skyscreamer.jsonassert.JSONCompareMode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
@@ -38,8 +38,8 @@ import java.util.TimeZone;
 
 public class TestHistoryViewerPrinter {
 
-  private static final Log LOG = LogFactory.getLog(
-      TestHistoryViewerPrinter.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(TestHistoryViewerPrinter.class);
 
   @Test
   public void testHumanPrinter() throws Exception {
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestFileInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestFileInputFormat.java
index 7e72802fd85..4c847fa293f 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestFileInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestFileInputFormat.java
@@ -28,8 +28,6 @@ import javax.annotation.Nullable;
 
 import org.junit.Assert;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.BlockLocation;
 import org.apache.hadoop.fs.FileStatus;
@@ -48,6 +46,8 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.base.Function;
 import com.google.common.collect.Iterables;
@@ -57,7 +57,8 @@ import com.google.common.collect.Sets;
 @RunWith(value = Parameterized.class)
 public class TestFileInputFormat {
   
-  private static final Log LOG = LogFactory.getLog(TestFileInputFormat.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(TestFileInputFormat.class);
   
   private static String testTmpDir = System.getProperty("test.build.data", "/tmp");
   private static final Path TEST_ROOT_DIR = new Path(testTmpDir, "TestFIF");
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/output/TestFileOutputCommitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/output/TestFileOutputCommitter.java
index abbfcb26190..f72aa55144d 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/output/TestFileOutputCommitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/output/TestFileOutputCommitter.java
@@ -34,8 +34,6 @@ import static org.junit.Assert.*;
 import org.apache.hadoop.util.concurrent.HadoopExecutors;
 import org.junit.Assert;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.FileSystem;
@@ -56,6 +54,8 @@ import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.TaskAttemptID;
 import org.apache.hadoop.mapreduce.task.JobContextImpl;
 import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 @SuppressWarnings("unchecked")
 public class TestFileOutputCommitter {
@@ -67,8 +67,8 @@ public class TestFileOutputCommitter {
   private final static String SUB_DIR = "SUB_DIR";
   private final static Path OUT_SUB_DIR = new Path(outDir, SUB_DIR);
 
-  private static final Log LOG =
-      LogFactory.getLog(TestFileOutputCommitter.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(TestFileOutputCommitter.class);
 
   // A random task attempt id for testing.
   private static final String attempt = "attempt_200707121733_0001_m_000000_0";
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/task/reduce/TestFetcher.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/task/reduce/TestFetcher.java
index 934afd747e7..204c2bdc113 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/task/reduce/TestFetcher.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/task/reduce/TestFetcher.java
@@ -47,8 +47,6 @@ import java.util.ArrayList;
 
 import javax.crypto.SecretKey;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapred.Counters;
 import org.apache.hadoop.mapred.IFileInputStream;
@@ -63,12 +61,14 @@ import org.apache.hadoop.util.Time;
 import org.junit.Test;
 import org.mockito.invocation.InvocationOnMock;
 import org.mockito.stubbing.Answer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Test that the Fetcher does what we expect it to.
  */
 public class TestFetcher {
-  private static final Log LOG = LogFactory.getLog(TestFetcher.class);
+  private static final Logger LOG = LoggerFactory.getLogger(TestFetcher.class);
   JobConf job = null;
   JobConf jobWithRetry = null;
   TaskAttemptID id = null;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/io/TestSequenceFileMergeProgress.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/io/TestSequenceFileMergeProgress.java
index 97dfa26acf4..4262f1f23b5 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/io/TestSequenceFileMergeProgress.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/io/TestSequenceFileMergeProgress.java
@@ -32,12 +32,12 @@ import org.apache.hadoop.io.compress.CompressionCodec;
 import org.apache.hadoop.io.compress.DefaultCodec;
 import org.apache.hadoop.mapred.*;
 
-import org.apache.commons.logging.*;
+import org.slf4j.Logger;
 import org.junit.Test;
 import static org.junit.Assert.assertEquals;
 
 public class TestSequenceFileMergeProgress {
-  private static final Log LOG = FileInputFormat.LOG;
+  private static final Logger LOG = FileInputFormat.LOG;
   private static final int RECORDS = 10000;
 
   @Test
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileAsBinaryInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileAsBinaryInputFormat.java
index 64b0983a5d6..45788cff039 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileAsBinaryInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileAsBinaryInputFormat.java
@@ -18,13 +18,13 @@
 
 package org.apache.hadoop.mapred;
 
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.BytesWritable;
 import org.apache.hadoop.io.DataInputBuffer;
 import org.apache.hadoop.io.SequenceFile;
 import org.apache.hadoop.io.Text;
+import org.slf4j.Logger;
 import org.junit.Test;
 
 import java.io.IOException;
@@ -34,7 +34,7 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
 public class TestSequenceFileAsBinaryInputFormat {
-  private static final Log LOG = FileInputFormat.LOG;
+  private static final Logger LOG = FileInputFormat.LOG;
   private static final int RECORDS = 10000;
 
   @Test
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileAsTextInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileAsTextInputFormat.java
index d4e5e17e11f..aa62caedb11 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileAsTextInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileAsTextInputFormat.java
@@ -18,7 +18,6 @@
 
 package org.apache.hadoop.mapred;
 
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -26,6 +25,7 @@ import org.apache.hadoop.io.IntWritable;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.SequenceFile;
 import org.apache.hadoop.io.Text;
+import org.slf4j.Logger;
 import org.junit.Test;
 
 import java.util.BitSet;
@@ -35,7 +35,7 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 
 public class TestSequenceFileAsTextInputFormat {
-  private static final Log LOG = FileInputFormat.LOG;
+  private static final Logger LOG = FileInputFormat.LOG;
 
   private static int MAX_LENGTH = 10000;
   private static Configuration conf = new Configuration();
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileInputFilter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileInputFilter.java
index 93f21ce9e49..4a98566cb43 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileInputFilter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileInputFilter.java
@@ -18,13 +18,13 @@
 
 package org.apache.hadoop.mapred;
 
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.BytesWritable;
 import org.apache.hadoop.io.SequenceFile;
 import org.apache.hadoop.io.Text;
+import org.slf4j.Logger;
 import org.junit.Test;
 
 import java.io.IOException;
@@ -33,7 +33,7 @@ import java.util.Random;
 import static org.junit.Assert.assertEquals;
 
 public class TestSequenceFileInputFilter {
-  private static final Log LOG = FileInputFormat.LOG;
+  private static final Logger LOG = FileInputFormat.LOG;
 
   private static final int MAX_LENGTH = 15000;
   private static final Configuration conf = new Configuration();
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileInputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileInputFormat.java
index ba4dce30974..3af1647d6ca 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileInputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestSequenceFileInputFormat.java
@@ -18,13 +18,13 @@
 
 package org.apache.hadoop.mapred;
 
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.BytesWritable;
 import org.apache.hadoop.io.IntWritable;
 import org.apache.hadoop.io.SequenceFile;
+import org.slf4j.Logger;
 import org.junit.Test;
 
 import java.util.BitSet;
@@ -34,7 +34,7 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 
 public class TestSequenceFileInputFormat {
-  private static final Log LOG = FileInputFormat.LOG;
+  private static final Logger LOG = FileInputFormat.LOG;
 
   private static int MAX_LENGTH = 10000;
   private static Configuration conf = new Configuration();