HDFS-13695. Move logging to slf4j in HDFS package. Contributed by Ian Pickering.

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java

@@ -1872,7 +1872,7 @@ protected Type inferChecksumTypeByReading(LocatedBlock lb, DatanodeInfo dn)
       return PBHelperClient.convert(
           reply.getReadOpChecksumInfo().getChecksum().getType());
     } finally {
-      IOUtilsClient.cleanup(null, pair.in, pair.out);
+      IOUtilsClient.cleanupWithLogger(LOG, pair.in, pair.out);
     }
   }
 
@@ -2933,7 +2933,7 @@ public Peer newConnectedPeer(InetSocketAddress addr,
       return peer;
     } finally {
       if (!success) {
-        IOUtilsClient.cleanup(LOG, peer);
+        IOUtilsClient.cleanupWithLogger(LOG, peer);
         IOUtils.closeSocket(sock);
       }
     }

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSUtilClient.java

@@ -649,7 +649,7 @@ public static Peer peerFromSocketAndKey(
       return peer;
     } finally {
       if (!success) {
-        IOUtilsClient.cleanup(null, peer);
+        IOUtilsClient.cleanupWithLogger(LOG, peer);
       }
     }
   }

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/PeerCache.java

@@ -188,7 +188,7 @@ public void put(DatanodeID dnId, Peer peer) {
     if (peer.isClosed()) return;
     if (capacity <= 0) {
       // Cache disabled.
-      IOUtilsClient.cleanup(LOG, peer);
+      IOUtilsClient.cleanupWithLogger(LOG, peer);
       return;
     }
     putInternal(dnId, peer);
@@ -221,7 +221,7 @@ private synchronized void evictExpired(long expiryPeriod) {
           Time.monotonicNow() - entry.getValue().getTime() < expiryPeriod) {
         break;
       }
-      IOUtilsClient.cleanup(LOG, entry.getValue().getPeer());
+      IOUtilsClient.cleanupWithLogger(LOG, entry.getValue().getPeer());
       iter.remove();
     }
   }
@@ -239,7 +239,7 @@ private synchronized void evictOldest() {
         "capacity: " + capacity);
     }
     Entry<Key, Value> entry = iter.next();
-    IOUtilsClient.cleanup(LOG, entry.getValue().getPeer());
+    IOUtilsClient.cleanupWithLogger(LOG, entry.getValue().getPeer());
     iter.remove();
   }
 
@@ -267,7 +267,7 @@ private void run() throws InterruptedException {
   @VisibleForTesting
   synchronized void clear() {
     for (Value value : multimap.values()) {
-      IOUtilsClient.cleanup(LOG, value.getPeer());
+      IOUtilsClient.cleanupWithLogger(LOG, value.getPeer());
     }
     multimap.clear();
   }

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/BlockReaderFactory.java

@@ -549,14 +549,14 @@ public ShortCircuitReplicaInfo createShortCircuitReplicaInfo() {
           // Handle an I/O error we got when using a cached socket.
           // These are considered less serious, because the socket may be stale.
           LOG.debug("{}: closing stale domain peer {}", this, peer, e);
-          IOUtilsClient.cleanup(LOG, peer);
+          IOUtilsClient.cleanupWithLogger(LOG, peer);
         } else {
           // Handle an I/O error we got when using a newly created socket.
           // We temporarily disable the domain socket path for a few minutes in
           // this case, to prevent wasting more time on it.
           LOG.warn(this + ": I/O error requesting file descriptors.  " +
               "Disabling domain socket " + peer.getDomainSocket(), e);
-          IOUtilsClient.cleanup(LOG, peer);
+          IOUtilsClient.cleanupWithLogger(LOG, peer);
           clientContext.getDomainSocketFactory()
               .disableDomainSocketPath(pathInfo.getPath());
           return null;
@@ -620,7 +620,7 @@ private ShortCircuitReplicaInfo requestFileDescriptors(DomainPeer peer,
         return null;
       } finally {
         if (replica == null) {
-          IOUtilsClient.cleanup(DFSClient.LOG, fis[0], fis[1]);
+          IOUtilsClient.cleanupWithLogger(DFSClient.LOG, fis[0], fis[1]);
         }
       }
     case ERROR_UNSUPPORTED:
@@ -692,7 +692,7 @@ private BlockReader getRemoteBlockReaderFromDomain() throws IOException {
         blockReader = getRemoteBlockReader(peer);
         return blockReader;
       } catch (IOException ioe) {
-        IOUtilsClient.cleanup(LOG, peer);
+        IOUtilsClient.cleanupWithLogger(LOG, peer);
         if (isSecurityException(ioe)) {
           LOG.trace("{}: got security exception while constructing a remote "
                   + " block reader from the unix domain socket at {}",
@@ -715,7 +715,7 @@ private BlockReader getRemoteBlockReaderFromDomain() throws IOException {
         }
       } finally {
         if (blockReader == null) {
-          IOUtilsClient.cleanup(LOG, peer);
+          IOUtilsClient.cleanupWithLogger(LOG, peer);
         }
       }
     }
@@ -766,7 +766,7 @@ private BlockReader getRemoteBlockReaderFromTcp() throws IOException {
         }
       } finally {
         if (blockReader == null) {
-          IOUtilsClient.cleanup(LOG, peer);
+          IOUtilsClient.cleanupWithLogger(LOG, peer);
         }
       }
     }

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/BlockReaderLocalLegacy.java

@@ -686,7 +686,7 @@ public synchronized long skip(long n) throws IOException {
 
   @Override
   public synchronized void close() throws IOException {
-    IOUtilsClient.cleanup(LOG, dataIn, checksumIn);
+    IOUtilsClient.cleanupWithLogger(LOG, dataIn, checksumIn);
     if (slowReadBuff != null) {
       bufferPool.returnBuffer(slowReadBuff);
       slowReadBuff = null;

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/shortcircuit/ShortCircuitCache.java

@@ -880,7 +880,7 @@ public void close() {
       maxNonMmappedEvictableLifespanMs = 0;
       maxEvictableMmapedSize = 0;
       // Close and join cacheCleaner thread.
-      IOUtilsClient.cleanup(LOG, cacheCleaner);
+      IOUtilsClient.cleanupWithLogger(LOG, cacheCleaner);
       // Purge all replicas.
       while (true) {
         Object eldestKey;
@@ -931,7 +931,7 @@ public void close() {
       LOG.error("Interrupted while waiting for CleanerThreadPool "
           + "to terminate", e);
     }
-    IOUtilsClient.cleanup(LOG, shmManager);
+    IOUtilsClient.cleanupWithLogger(LOG, shmManager);
   }
 
   @VisibleForTesting // ONLY for testing

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/shortcircuit/ShortCircuitReplica.java

@@ -244,7 +244,7 @@ void close() {
         suffix += "  munmapped.";
       }
     }
-    IOUtilsClient.cleanup(LOG, dataStream, metaStream);
+    IOUtilsClient.cleanupWithLogger(LOG, dataStream, metaStream);
     if (slot != null) {
       cache.scheduleSlotReleaser(slot);
       if (LOG.isTraceEnabled()) {

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/util/IOUtilsClient.java

@@ -31,7 +31,8 @@ public class IOUtilsClient {
    * @param log the log to record problems to at debug level. Can be null.
    * @param closeables the objects to close
    */
-  public static void cleanup(Logger log, java.io.Closeable... closeables) {
+  public static void cleanupWithLogger(Logger log,
+                                       java.io.Closeable... closeables) {
     for (java.io.Closeable c : closeables) {
       if (c != null) {
         try {

hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/nfs3/OpenFileCtx.java

@@ -1211,11 +1211,11 @@ private void doSingleWrite(final WriteCtx writeCtx) {
 
       LOG.info("Clean up open file context for fileId: {}",
           latestAttr.getFileId());
-      cleanupWithLogger();
+      cleanup();
     }
   }
 
-  synchronized void cleanupWithLogger() {
+  synchronized void cleanup() {
     if (!activeState) {
       LOG.info("Current OpenFileCtx is already inactive, no need to cleanup.");
       return;

hadoop-hdfs-project/hadoop-hdfs-nfs/src/main/java/org/apache/hadoop/hdfs/nfs/nfs3/OpenFileCtxCache.java

@@ -139,7 +139,7 @@ boolean put(FileHandle h, OpenFileCtx context) {
     
     // Cleanup the old stream outside the lock
     if (toEvict != null) {
-      toEvict.cleanupWithLogger();
+      toEvict.cleanup();
     }
     return true;
   }
@@ -179,7 +179,7 @@ void scan(long streamTimeout) {
 
     // Invoke the cleanup outside the lock
     for (OpenFileCtx ofc : ctxToRemove) {
-      ofc.cleanupWithLogger();
+      ofc.cleanup();
     }
   }
 
@@ -215,7 +215,7 @@ void cleanAll() {
 
     // Invoke the cleanup outside the lock
     for (OpenFileCtx ofc : cleanedContext) {
-      ofc.cleanupWithLogger();
+      ofc.cleanup();
     }
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java

@@ -64,8 +64,8 @@
 import org.apache.commons.cli.Options;
 import org.apache.commons.cli.ParseException;
 import org.apache.commons.cli.PosixParser;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
@@ -99,7 +99,8 @@
 
 @InterfaceAudience.Private
 public class DFSUtil {
-  public static final Log LOG = LogFactory.getLog(DFSUtil.class.getName());
+  public static final Logger LOG =
+      LoggerFactory.getLogger(DFSUtil.class.getName());
   
   private DFSUtil() { /* Hidden constructor */ }
   

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/HdfsDtFetcher.java

@@ -21,8 +21,8 @@
 import java.io.IOException;
 import java.net.URI;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
@@ -40,7 +40,8 @@
  *  compilation units.  Resolution of fetcher impl will be done at runtime.
  */
 public class HdfsDtFetcher implements DtFetcher {
-  private static final Log LOG = LogFactory.getLog(HdfsDtFetcher.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(HdfsDtFetcher.class);
 
   private static final String SERVICE_NAME = HdfsConstants.HDFS_URI_SCHEME;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/NameNodeProxies.java

@@ -25,8 +25,8 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.NameNodeProxiesClient.ProxyAndInfo;
@@ -73,7 +73,8 @@
 @InterfaceAudience.Private
 public class NameNodeProxies {
   
-  private static final Log LOG = LogFactory.getLog(NameNodeProxies.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(NameNodeProxies.class);
 
   /**
    * Creates the namenode proxy with the passed protocol. This will handle

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/SWebHdfsDtFetcher.java

@@ -18,8 +18,8 @@
 
 package org.apache.hadoop.hdfs;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.hdfs.web.WebHdfsConstants;
 import org.apache.hadoop.io.Text;
@@ -28,7 +28,8 @@
  *  DtFetcher for SWebHdfsFileSystem using the base class HdfsDtFetcher impl.
  */
 public class SWebHdfsDtFetcher extends HdfsDtFetcher {
-  private static final Log LOG = LogFactory.getLog(SWebHdfsDtFetcher.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(SWebHdfsDtFetcher.class);
 
   private static final String SERVICE_NAME = WebHdfsConstants.SWEBHDFS_SCHEME;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/WebHdfsDtFetcher.java

@@ -18,8 +18,8 @@
 
 package org.apache.hadoop.hdfs;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.hdfs.web.WebHdfsConstants;
 import org.apache.hadoop.io.Text;
@@ -28,7 +28,8 @@
  *  DtFetcher for WebHdfsFileSystem using the base class HdfsDtFetcher impl.
  */
 public class WebHdfsDtFetcher extends HdfsDtFetcher {
-  private static final Log LOG = LogFactory.getLog(WebHdfsDtFetcher.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(WebHdfsDtFetcher.class);
 
   private static final String SERVICE_NAME = WebHdfsConstants.WEBHDFS_SCHEME;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/net/DomainPeerServer.java

@@ -21,14 +21,14 @@
 import java.io.IOException;
 import java.net.SocketTimeoutException;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.net.unix.DomainSocket;
 
 @InterfaceAudience.Private
 public class DomainPeerServer implements PeerServer {
-  static final Log LOG = LogFactory.getLog(DomainPeerServer.class);
+  static final Logger LOG = LoggerFactory.getLogger(DomainPeerServer.class);
   private final DomainSocket sock;
 
   DomainPeerServer(DomainSocket sock) {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/net/TcpPeerServer.java

@@ -23,8 +23,8 @@
 import java.net.SocketTimeoutException;
 import java.nio.channels.ServerSocketChannel;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.hdfs.DFSUtilClient;
 import org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.SecureResources;
@@ -32,7 +32,7 @@
 
 @InterfaceAudience.Private
 public class TcpPeerServer implements PeerServer {
-  static final Log LOG = LogFactory.getLog(TcpPeerServer.class);
+  static final Logger LOG = LoggerFactory.getLogger(TcpPeerServer.class);
 
   private final ServerSocket serverSocket;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/client/AsyncLoggerSet.java

@@ -23,8 +23,8 @@
 import java.util.Map;
 import java.util.concurrent.TimeoutException;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos.GetJournalStateResponseProto;
 import org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos.NewEpochResponseProto;
 import org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos.PrepareRecoveryResponseProto;
@@ -46,7 +46,7 @@
  * {@link QuorumCall} instances.
  */
 class AsyncLoggerSet {
-  static final Log LOG = LogFactory.getLog(AsyncLoggerSet.class);
+  static final Logger LOG = LoggerFactory.getLogger(AsyncLoggerSet.class);
 
   private final List<AsyncLogger> loggers;
   

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/client/QuorumJournalManager.java

@@ -30,8 +30,8 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -65,7 +65,7 @@
  */
 @InterfaceAudience.Private
 public class QuorumJournalManager implements JournalManager {
-  static final Log LOG = LogFactory.getLog(QuorumJournalManager.class);
+  static final Logger LOG = LoggerFactory.getLogger(QuorumJournalManager.class);
 
   // Timeouts for which the QJM will wait for each of the following actions.
   private final int startSegmentTimeoutMs;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/GetJournalEditServlet.java

@@ -32,8 +32,8 @@
 import javax.servlet.http.HttpServletResponse;
 
 import org.apache.commons.text.StringEscapeUtils;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -67,7 +67,8 @@
 public class GetJournalEditServlet extends HttpServlet {
 
   private static final long serialVersionUID = -4635891628211723009L;
-  private static final Log LOG = LogFactory.getLog(GetJournalEditServlet.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(GetJournalEditServlet.class);
 
   static final String STORAGEINFO_PARAM = "storageInfo";
   static final String JOURNAL_ID_PARAM = "jid";

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/Journal.java

@@ -32,8 +32,8 @@
 import java.util.concurrent.TimeUnit;
 
 import org.apache.commons.lang3.Range;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.hdfs.qjournal.protocol.JournalNotFormattedException;
@@ -79,7 +79,7 @@
  * the same JVM.
  */
 public class Journal implements Closeable {
-  static final Log LOG = LogFactory.getLog(Journal.class);
+  static final Logger LOG = LoggerFactory.getLogger(Journal.class);
 
 
   // Current writing state
@@ -1045,7 +1045,7 @@ private void persistPaxosData(long segmentTxId,
   public synchronized void doPreUpgrade() throws IOException {
     // Do not hold file lock on committedTxnId, because the containing
     // directory will be renamed.  It will be reopened lazily on next access.
-    IOUtils.cleanup(LOG, committedTxnId);
+    IOUtils.cleanupWithLogger(LOG, committedTxnId);
     storage.getJournalManager().doPreUpgrade();
   }
 
@@ -1087,7 +1087,7 @@ public synchronized void doUpgrade(StorageInfo sInfo) throws IOException {
       lastWriterEpoch.set(prevLastWriterEpoch.get());
       committedTxnId.set(prevCommittedTxnId.get());
     } finally {
-      IOUtils.cleanup(LOG, prevCommittedTxnId);
+      IOUtils.cleanupWithLogger(LOG, prevCommittedTxnId);
     }
   }
 
@@ -1109,7 +1109,7 @@ public Boolean canRollBack(StorageInfo storage, StorageInfo prevStorage,
   public synchronized void doRollback() throws IOException {
     // Do not hold file lock on committedTxnId, because the containing
     // directory will be renamed.  It will be reopened lazily on next access.
-    IOUtils.cleanup(LOG, committedTxnId);
+    IOUtils.cleanupWithLogger(LOG, committedTxnId);
     storage.getJournalManager().doRollback();
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/JournalNode.java

@@ -21,8 +21,8 @@
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configurable;
 import org.apache.hadoop.conf.Configuration;
@@ -68,7 +68,7 @@
  */
 @InterfaceAudience.Private
 public class JournalNode implements Tool, Configurable, JournalNodeMXBean {
-  public static final Log LOG = LogFactory.getLog(JournalNode.class);
+  public static final Logger LOG = LoggerFactory.getLogger(JournalNode.class);
   private Configuration conf;
   private JournalNodeRpcServer rpcServer;
   private JournalNodeHttpServer httpServer;
@@ -285,7 +285,7 @@ public void stop(int rc) {
     }
     
     for (Journal j : journalsById.values()) {
-      IOUtils.cleanup(LOG, j);
+      IOUtils.cleanupWithLogger(LOG, j);
     }
 
     DefaultMetricsSystem.shutdown();
@@ -403,7 +403,7 @@ private void registerJNMXBean() {
   private class ErrorReporter implements StorageErrorReporter {
     @Override
     public void reportErrorOnFile(File f) {
-      LOG.fatal("Error reported on file " + f + "... exiting",
+      LOG.error("Error reported on file " + f + "... exiting",
           new Exception());
       stop(1);
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/JournalNodeRpcServer.java

@@ -19,7 +19,7 @@
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.protobuf.BlockingService;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
@@ -61,7 +61,7 @@
 @VisibleForTesting
 public class JournalNodeRpcServer implements QJournalProtocol,
     InterQJournalProtocol {
-  private static final Log LOG = JournalNode.LOG;
+  private static final Logger LOG = JournalNode.LOG;
   private static final int HANDLER_COUNT = 5;
   private final JournalNode jn;
   private Server server;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/security/token/block/BlockTokenSecretManager.java

@@ -29,8 +29,8 @@
 import java.util.Map;
 
 import org.apache.commons.lang3.ArrayUtils;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
@@ -58,7 +58,8 @@
 @InterfaceAudience.Private
 public class BlockTokenSecretManager extends
     SecretManager<BlockTokenIdentifier> {
-  public static final Log LOG = LogFactory.getLog(BlockTokenSecretManager.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(BlockTokenSecretManager.class);
 
   public static final Token<BlockTokenIdentifier> DUMMY_TOKEN = new Token<BlockTokenIdentifier>();
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/security/token/delegation/DelegationTokenSecretManager.java

@@ -27,8 +27,8 @@
 import java.util.List;
 import java.util.Map.Entry;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.SecretManagerSection;
@@ -62,8 +62,8 @@
 public class DelegationTokenSecretManager
     extends AbstractDelegationTokenSecretManager<DelegationTokenIdentifier> {
 
-  private static final Log LOG = LogFactory
+  private static final Logger LOG = LoggerFactory
-      .getLog(DelegationTokenSecretManager.class);
+      .getLogger(DelegationTokenSecretManager.class);
   
   private final FSNamesystem namesystem;
   private final SerializerCompat serializerCompat = new SerializerCompat();

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java

@@ -36,8 +36,8 @@
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
@@ -172,7 +172,7 @@
 
 @InterfaceAudience.Private
 public class Balancer {
-  static final Log LOG = LogFactory.getLog(Balancer.class);
+  static final Logger LOG = LoggerFactory.getLogger(Balancer.class);
 
   static final Path BALANCER_ID_PATH = new Path("/system/balancer.id");
 
@@ -724,7 +724,7 @@ static int run(Collection<URI> namenodes, final BalancerParameters p,
       }
     } finally {
       for(NameNodeConnector nnc : connectors) {
-        IOUtils.cleanup(LOG, nnc);
+        IOUtils.cleanupWithLogger(LOG, nnc);
       }
     }
     return ExitStatus.SUCCESS.getExitCode();

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Dispatcher.java

@@ -44,8 +44,8 @@
 import java.util.concurrent.Future;
 import java.util.concurrent.ThreadPoolExecutor;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.StorageType;
@@ -88,7 +88,7 @@
 /** Dispatching block replica moves between datanodes. */
 @InterfaceAudience.Private
 public class Dispatcher {
-  static final Log LOG = LogFactory.getLog(Dispatcher.class);
+  static final Logger LOG = LoggerFactory.getLogger(Dispatcher.class);
 
   /**
    * the period of time to delay the usage of a DataNode after hitting

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/NameNodeConnector.java

@@ -31,8 +31,8 @@
 import java.util.concurrent.atomic.AtomicLong;
 
 import com.google.common.base.Preconditions;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FSDataOutputStream;
@@ -62,7 +62,8 @@
  */
 @InterfaceAudience.Private
 public class NameNodeConnector implements Closeable {
-  private static final Log LOG = LogFactory.getLog(NameNodeConnector.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(NameNodeConnector.class);
 
   public static final int DEFAULT_MAX_IDLE_ITERATIONS = 5;
   private static boolean write2IdFile = true;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/AvailableSpaceBlockPlacementPolicy.java

@@ -25,8 +25,8 @@
 import java.util.Random;
 
 import com.google.common.base.Preconditions;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -39,8 +39,8 @@
  */
 public class AvailableSpaceBlockPlacementPolicy extends
     BlockPlacementPolicyDefault {
-  private static final Log LOG = LogFactory
+  private static final Logger LOG = LoggerFactory
-      .getLog(AvailableSpaceBlockPlacementPolicy.class);
+      .getLogger(AvailableSpaceBlockPlacementPolicy.class);
   private static final Random RAND = new Random();
   private int balancedPreference =
       (int) (100 * DFS_NAMENODE_AVAILABLE_SPACE_BLOCK_PLACEMENT_POLICY_BALANCED_SPACE_PREFERENCE_FRACTION_DEFAULT);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java

@@ -24,8 +24,8 @@
 import com.google.common.base.Preconditions;
 import com.google.common.net.InetAddresses;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
@@ -73,7 +73,7 @@
 @InterfaceAudience.Private
 @InterfaceStability.Evolving
 public class DatanodeManager {
-  static final Log LOG = LogFactory.getLog(DatanodeManager.class);
+  static final Logger LOG = LoggerFactory.getLogger(DatanodeManager.class);
 
   private final Namesystem namesystem;
   private final BlockManager blockManager;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/HostFileManager.java

@@ -18,8 +18,8 @@
 package org.apache.hadoop.hdfs.server.blockmanagement;
 
 import com.google.common.annotations.VisibleForTesting;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.protocol.DatanodeID;
@@ -50,7 +50,8 @@
  * resolutions are only done during the loading time to minimize the latency.
  */
 public class HostFileManager extends HostConfigManager {
-  private static final Log LOG = LogFactory.getLog(HostFileManager.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(HostFileManager.class);
   private Configuration conf;
   private HostSet includes = new HostSet();
   private HostSet excludes = new HostSet();

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/JspHelper.java

@@ -18,8 +18,8 @@
 
 package org.apache.hadoop.hdfs.server.common;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
@@ -53,7 +53,7 @@ public class JspHelper {
   public static final String CURRENT_CONF = "current.conf";
   public static final String DELEGATION_PARAMETER_NAME = DelegationParam.NAME;
   public static final String NAMENODE_ADDRESS = "nnaddr";
-  private static final Log LOG = LogFactory.getLog(JspHelper.class);
+  private static final Logger LOG = LoggerFactory.getLogger(JspHelper.class);
 
   /** Private constructor for preventing creating JspHelper object. */
   private JspHelper() {}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/MetricsLoggerTask.java

@@ -32,8 +32,9 @@
 import javax.management.ObjectName;
 
 import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.commons.logging.impl.Log4JLogger;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.metrics2.util.MBeans;
 import org.apache.log4j.Appender;
 import org.apache.log4j.AsyncAppender;
@@ -43,7 +44,8 @@
  */
 public class MetricsLoggerTask implements Runnable {
 
-  public static final Log LOG = LogFactory.getLog(MetricsLoggerTask.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(MetricsLoggerTask.class);
 
   private static ObjectName objectName = null;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/Util.java

@@ -38,8 +38,8 @@
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -57,7 +57,8 @@
 
 @InterfaceAudience.Private
 public final class Util {
-  private final static Log LOG = LogFactory.getLog(Util.class.getName());
+  private final static Logger LOG =
+      LoggerFactory.getLogger(Util.class.getName());
 
   public final static String FILE_LENGTH = "File-Length";
   public final static String CONTENT_LENGTH = "Content-Length";

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DirectoryScanner.java

@@ -39,8 +39,8 @@
 import java.util.concurrent.atomic.AtomicLong;
 
 import org.apache.commons.lang3.time.FastDateFormat;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.util.AutoCloseableLock;
@@ -60,7 +60,8 @@
  */
 @InterfaceAudience.Private
 public class DirectoryScanner implements Runnable {
-  private static final Log LOG = LogFactory.getLog(DirectoryScanner.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(DirectoryScanner.class);
   private static final int MILLIS_PER_SECOND = 1000;
   private static final String START_MESSAGE =
       "Periodic Directory Tree Verification scan"

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java

@@ -18,8 +18,8 @@
 
 package org.apache.hadoop.hdfs.server.datanode;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -37,7 +37,8 @@
  */
 @InterfaceAudience.Private
 class ProfilingFileIoEvents {
-  static final Log LOG = LogFactory.getLog(ProfilingFileIoEvents.class);
+  static final Logger LOG =
+      LoggerFactory.getLogger(ProfilingFileIoEvents.class);
 
   private final boolean isEnabled;
   private final int sampleRangeMax;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ShortCircuitRegistry.java

@@ -32,8 +32,8 @@
 
 import com.google.common.annotations.VisibleForTesting;
 import org.apache.commons.io.IOUtils;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.InvalidRequestException;
 import org.apache.hadoop.hdfs.ExtendedBlockId;
@@ -81,7 +81,8 @@
  * The counterpart of this class on the client is {@link DfsClientShmManager}.
  */
 public class ShortCircuitRegistry {
-  public static final Log LOG = LogFactory.getLog(ShortCircuitRegistry.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(ShortCircuitRegistry.class);
 
   private static final int SHM_LENGTH = 8192;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/AvailableSpaceVolumeChoosingPolicy.java

@@ -27,8 +27,8 @@
 import java.util.List;
 import java.util.Random;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configurable;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.StorageType;
@@ -46,7 +46,8 @@
 public class AvailableSpaceVolumeChoosingPolicy<V extends FsVolumeSpi>
     implements VolumeChoosingPolicy<V>, Configurable {
   
-  private static final Log LOG = LogFactory.getLog(AvailableSpaceVolumeChoosingPolicy.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(AvailableSpaceVolumeChoosingPolicy.class);
 
   private Object[] syncLocks;
   

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/RoundRobinVolumeChoosingPolicy.java

@@ -20,8 +20,8 @@
 import java.io.IOException;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.util.DiskChecker.DiskOutOfSpaceException;
 
@@ -31,7 +31,8 @@
  */
 public class RoundRobinVolumeChoosingPolicy<V extends FsVolumeSpi>
     implements VolumeChoosingPolicy<V> {
-  public static final Log LOG = LogFactory.getLog(RoundRobinVolumeChoosingPolicy.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(RoundRobinVolumeChoosingPolicy.class);
 
   // curVolumes stores the RR counters of each storage type.
   // The ordinal of storage type in org.apache.hadoop.fs.StorageType

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/BlockPoolSlice.java

@@ -32,8 +32,8 @@
 import java.util.Scanner;
 import java.util.concurrent.atomic.AtomicLong;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CachingGetSpaceUsed;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
@@ -71,7 +71,7 @@
  * This class is synchronized by {@link FsVolumeImpl}.
  */
 class BlockPoolSlice {
-  static final Log LOG = LogFactory.getLog(BlockPoolSlice.class);
+  static final Logger LOG = LoggerFactory.getLogger(BlockPoolSlice.class);
 
   private final String bpid;
   private final FsVolumeImpl volume; // volume to which this BlockPool belongs to
@@ -764,7 +764,7 @@ void shutdown(BlockListAsLongs blocksListToPersist) {
     }
 
     if (dfsUsage instanceof CachingGetSpaceUsed) {
-      IOUtils.cleanup(LOG, ((CachingGetSpaceUsed) dfsUsage));
+      IOUtils.cleanupWithLogger(LOG, ((CachingGetSpaceUsed) dfsUsage));
     }
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetAsyncDiskService.java

@@ -30,8 +30,8 @@
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
 import org.apache.hadoop.hdfs.server.datanode.DataNode;
 import org.apache.hadoop.hdfs.server.datanode.DatanodeUtil;
@@ -59,7 +59,8 @@
  * They should be combined.
  */
 class FsDatasetAsyncDiskService {
-  public static final Log LOG = LogFactory.getLog(FsDatasetAsyncDiskService.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(FsDatasetAsyncDiskService.class);
   
   // ThreadPool core pool size
   private static final int CORE_THREADS_PER_VOLUME = 1;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/RamDiskAsyncLazyPersistService.java

@@ -18,8 +18,8 @@
 
 package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSUtilClient;
 import org.apache.hadoop.hdfs.HdfsConfiguration;
@@ -45,7 +45,8 @@
  * They should be combined.
  */
 class RamDiskAsyncLazyPersistService {
-  public static final Log LOG = LogFactory.getLog(RamDiskAsyncLazyPersistService.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(RamDiskAsyncLazyPersistService.class);
 
   // ThreadPool core pool size
   private static final int CORE_THREADS_PER_VOLUME = 1;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/RamDiskReplicaTracker.java

@@ -20,8 +20,8 @@
 
 import com.google.common.base.Preconditions;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -36,7 +36,8 @@
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 public abstract class RamDiskReplicaTracker {
-  static final Log LOG = LogFactory.getLog(RamDiskReplicaTracker.class);
+  static final Logger LOG =
+      LoggerFactory.getLogger(RamDiskReplicaTracker.class);
 
   FsDatasetImpl fsDataset;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/DatanodeHttpServer.java

@@ -41,8 +41,8 @@
 import io.netty.handler.ssl.SslHandler;
 import io.netty.handler.stream.ChunkedWriteHandler;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -87,7 +87,7 @@ public class DatanodeHttpServer implements Closeable {
   private final RestCsrfPreventionFilter restCsrfPreventionFilter;
   private InetSocketAddress httpAddress;
   private InetSocketAddress httpsAddress;
-  static final Log LOG = LogFactory.getLog(DatanodeHttpServer.class);
+  static final Logger LOG = LoggerFactory.getLogger(DatanodeHttpServer.class);
 
   // HttpServer threads are only used for the web UI and basic servlets, so
   // set them to the minimum possible

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/RestCsrfPreventionFilterHandler.java

@@ -30,7 +30,7 @@
 import io.netty.handler.codec.http.HttpResponseStatus;
 import io.netty.util.ReferenceCountUtil;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.security.http.RestCsrfPreventionFilter;
@@ -46,7 +46,7 @@
 final class RestCsrfPreventionFilterHandler
     extends SimpleChannelInboundHandler<HttpRequest> {
 
-  private static final Log LOG = DatanodeHttpServer.LOG;
+  private static final Logger LOG = DatanodeHttpServer.LOG;
 
   private final RestCsrfPreventionFilter restCsrfPreventionFilter;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/SimpleHttpProxyHandler.java

@@ -34,7 +34,7 @@
 import io.netty.handler.codec.http.HttpRequest;
 import io.netty.handler.codec.http.HttpRequestEncoder;
 import io.netty.handler.codec.http.HttpResponseEncoder;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
 
 import java.net.InetSocketAddress;
 
@@ -53,7 +53,7 @@ class SimpleHttpProxyHandler extends SimpleChannelInboundHandler<HttpRequest> {
   private String uri;
   private Channel proxiedChannel;
   private final InetSocketAddress host;
-  static final Log LOG = DatanodeHttpServer.LOG;
+  static final Logger LOG = DatanodeHttpServer.LOG;
 
   SimpleHttpProxyHandler(InetSocketAddress host) {
     this.host = host;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/DataNodeUGIProvider.java

@@ -13,8 +13,8 @@
  */
 package org.apache.hadoop.hdfs.server.datanode.web.webhdfs;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
@@ -43,7 +43,7 @@ public class DataNodeUGIProvider {
   private final ParameterParser params;
   @VisibleForTesting
   static Cache<String, UserGroupInformation> ugiCache;
-  public static final Log LOG = LogFactory.getLog(Client.class);
+  public static final Logger LOG = LoggerFactory.getLogger(Client.class);
 
   DataNodeUGIProvider(ParameterParser params) {
     this.params = params;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/ExceptionHandler.java

@@ -23,7 +23,7 @@
 import io.netty.buffer.Unpooled;
 import io.netty.handler.codec.http.DefaultFullHttpResponse;
 import io.netty.handler.codec.http.HttpResponseStatus;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
 import org.apache.hadoop.hdfs.web.JsonUtil;
 import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.ipc.StandbyException;
@@ -43,7 +43,7 @@
 import static org.apache.hadoop.hdfs.server.datanode.web.webhdfs.WebHdfsHandler.APPLICATION_JSON_UTF8;
 
 class ExceptionHandler {
-  static Log LOG = WebHdfsHandler.LOG;
+  private static final Logger LOG = WebHdfsHandler.LOG;
 
   static DefaultFullHttpResponse exceptionCaught(Throwable cause) {
     Exception e = cause instanceof Exception ? (Exception) cause : new Exception(cause);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/HdfsWriter.java

@@ -23,7 +23,7 @@
 import io.netty.handler.codec.http.DefaultHttpResponse;
 import io.netty.handler.codec.http.HttpContent;
 import io.netty.handler.codec.http.LastHttpContent;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
 import org.apache.hadoop.hdfs.DFSClient;
 import org.apache.hadoop.io.IOUtils;
 
@@ -37,7 +37,7 @@ class HdfsWriter extends SimpleChannelInboundHandler<HttpContent> {
   private final DFSClient client;
   private final OutputStream out;
   private final DefaultHttpResponse response;
-  private static final Log LOG = WebHdfsHandler.LOG;
+  private static final Logger LOG = WebHdfsHandler.LOG;
 
   HdfsWriter(DFSClient client, OutputStream out, DefaultHttpResponse response) {
     this.client = client;
@@ -82,8 +82,8 @@ public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
   }
 
   private void releaseDfsResources() {
-    IOUtils.cleanup(LOG, out);
+    IOUtils.cleanupWithLogger(LOG, out);
-    IOUtils.cleanup(LOG, client);
+    IOUtils.cleanupWithLogger(LOG, client);
   }
 
   private void releaseDfsResourcesAndThrow() throws Exception {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/WebHdfsHandler.java

@@ -29,8 +29,8 @@
 import io.netty.handler.codec.http.HttpRequest;
 import io.netty.handler.codec.http.QueryStringDecoder;
 import io.netty.handler.stream.ChunkedStream;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CreateFlag;
 import org.apache.hadoop.fs.MD5MD5CRC32FileChecksum;
@@ -87,8 +87,8 @@
 import static org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier.HDFS_DELEGATION_KIND;
 
 public class WebHdfsHandler extends SimpleChannelInboundHandler<HttpRequest> {
-  static final Log LOG = LogFactory.getLog(WebHdfsHandler.class);
+  static final Logger LOG = LoggerFactory.getLogger(WebHdfsHandler.class);
-  static final Log REQLOG = LogFactory.getLog("datanode.webhdfs");
+  static final Logger REQLOG = LoggerFactory.getLogger("datanode.webhdfs");
   public static final String WEBHDFS_PREFIX = WebHdfsFileSystem.PATH_PREFIX;
   public static final int WEBHDFS_PREFIX_LENGTH = WEBHDFS_PREFIX.length();
   public static final String APPLICATION_OCTET_STREAM =
@@ -295,7 +295,7 @@ private void onGetFileChecksum(ChannelHandlerContext ctx) throws IOException {
       dfsclient.close();
       dfsclient = null;
     } finally {
-      IOUtils.cleanup(LOG, dfsclient);
+      IOUtils.cleanupWithLogger(LOG, dfsclient);
     }
     final byte[] js =
         JsonUtil.toJsonString(checksum).getBytes(StandardCharsets.UTF_8);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/mover/Mover.java

@@ -22,8 +22,8 @@
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import org.apache.commons.cli.*;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.conf.Configured;
@@ -70,7 +70,7 @@
 
 @InterfaceAudience.Private
 public class Mover {
-  static final Log LOG = LogFactory.getLog(Mover.class);
+  static final Logger LOG = LoggerFactory.getLogger(Mover.class);
 
   private static class StorageMap {
     private final StorageGroupMap<Source> sources
@@ -659,7 +659,7 @@ static int run(Map<URI, List<Path>> namenodes, Configuration conf)
           final ExitStatus r = m.run();
 
           if (r == ExitStatus.SUCCESS) {
-            IOUtils.cleanup(LOG, nnc);
+            IOUtils.cleanupWithLogger(LOG, nnc);
             iter.remove();
           } else if (r != ExitStatus.IN_PROGRESS) {
             if (r == ExitStatus.NO_MOVE_PROGRESS) {
@@ -682,7 +682,7 @@ static int run(Map<URI, List<Path>> namenodes, Configuration conf)
       return ExitStatus.SUCCESS.getExitCode();
     } finally {
       for (NameNodeConnector nnc : connectors) {
-        IOUtils.cleanup(LOG, nnc);
+        IOUtils.cleanupWithLogger(LOG, nnc);
       }
     }
   }
@@ -720,7 +720,7 @@ private static String[] readPathFile(String file) throws IOException {
           }
         }
       } finally {
-        IOUtils.cleanup(LOG, reader);
+        IOUtils.cleanupWithLogger(LOG, reader);
       }
       return list.toArray(new String[list.size()]);
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/CachePool.java

@@ -21,8 +21,6 @@
 
 import javax.annotation.Nonnull;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.fs.permission.FsPermission;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/CheckpointConf.java

@@ -19,8 +19,8 @@
 
 import static org.apache.hadoop.hdfs.DFSConfigKeys.*;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 
@@ -30,7 +30,8 @@
 
 @InterfaceAudience.Private
 public class CheckpointConf {
-  private static final Log LOG = LogFactory.getLog(CheckpointConf.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(CheckpointConf.class);
   
   /** How often to checkpoint regardless of number of txns */
   private final long checkpointPeriod;    // in seconds

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/Checkpointer.java

@@ -28,8 +28,8 @@
 import java.net.URL;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.NamenodeRole;
@@ -56,8 +56,8 @@
  * (1) time or (2) the size of the edits file.
  */
 class Checkpointer extends Daemon {
-  public static final Log LOG = 
+  public static final Logger LOG =
-    LogFactory.getLog(Checkpointer.class.getName());
+      LoggerFactory.getLogger(Checkpointer.class.getName());
 
   private final BackupNode backupNode;
   volatile boolean shouldRun;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ContentSummaryComputationContext.java

@@ -22,8 +22,8 @@
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.fs.XAttr;
 import org.apache.hadoop.io.WritableUtils;
 import org.apache.hadoop.security.AccessControlException;
@@ -48,8 +48,8 @@ public class ContentSummaryComputationContext {
   private int sleepNanoSec = 0;
 
   public static final String REPLICATED = "Replicated";
-  public static final Log LOG = LogFactory
+  public static final Logger LOG = LoggerFactory
-      .getLog(ContentSummaryComputationContext.class);
+      .getLogger(ContentSummaryComputationContext.class);
 
   private FSPermissionChecker pc;
   /**

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/DfsServlet.java

@@ -21,8 +21,8 @@
 import javax.servlet.http.HttpServletRequest;
 import java.io.IOException;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.server.common.JspHelper;
 import org.apache.hadoop.security.UserGroupInformation;
@@ -34,7 +34,8 @@ abstract class DfsServlet extends HttpServlet {
   /** For java.io.Serializable */
   private static final long serialVersionUID = 1L;
 
-  static final Log LOG = LogFactory.getLog(DfsServlet.class.getCanonicalName());
+  static final Logger LOG =
+      LoggerFactory.getLogger(DfsServlet.class.getCanonicalName());
 
   protected UserGroupInformation getUGI(HttpServletRequest request,
                                         Configuration conf) throws IOException {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditLogBackupOutputStream.java

@@ -21,8 +21,8 @@
 import java.net.InetSocketAddress;
 import java.util.Arrays;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hdfs.HdfsConfiguration;
 import org.apache.hadoop.hdfs.NameNodeProxies;
 import org.apache.hadoop.hdfs.server.common.Storage;
@@ -43,7 +43,8 @@
  *  int, int, byte[])
  */
 class EditLogBackupOutputStream extends EditLogOutputStream {
-  private static final Log LOG = LogFactory.getLog(EditLogFileOutputStream.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(EditLogFileOutputStream.class);
   static final int DEFAULT_BUFFER_SIZE = 256;
 
   private final JournalProtocol backupNode;  // RPC proxy to backup node

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditLogFileInputStream.java

@@ -29,8 +29,8 @@
 import java.net.URL;
 import java.security.PrivilegedExceptionAction;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.protocol.LayoutFlags;
@@ -71,7 +71,7 @@ static private enum State {
   private FSEditLogOp.Reader reader = null;
   private FSEditLogLoader.PositionTrackingInputStream tracker = null;
   private DataInputStream dataIn = null;
-  static final Log LOG = LogFactory.getLog(EditLogInputStream.class);
+  static final Logger LOG = LoggerFactory.getLogger(EditLogInputStream.class);
   
   /**
    * Open an EditLogInputStream for the given file.
@@ -161,7 +161,7 @@ private void init(boolean verifyLayoutVersion)
       state = State.OPEN;
     } finally {
       if (reader == null) {
-        IOUtils.cleanup(LOG, dataIn, tracker, bin, fStream);
+        IOUtils.cleanupWithLogger(LOG, dataIn, tracker, bin, fStream);
         state = State.CLOSED;
       }
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditLogFileOutputStream.java

@@ -26,8 +26,8 @@
 import java.nio.ByteBuffer;
 import java.nio.channels.FileChannel;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -42,7 +42,8 @@
  */
 @InterfaceAudience.Private
 public class EditLogFileOutputStream extends EditLogOutputStream {
-  private static final Log LOG = LogFactory.getLog(EditLogFileOutputStream.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(EditLogFileOutputStream.class);
   public static final int MIN_PREALLOCATION_LENGTH = 1024 * 1024;
 
   private File file;
@@ -161,7 +162,7 @@ public void close() throws IOException {
       fp.close();
       fp = null;
     } finally {
-      IOUtils.cleanup(LOG, fc, fp);
+      IOUtils.cleanupWithLogger(LOG, fc, fp);
       doubleBuf = null;
       fc = null;
       fp = null;
@@ -174,7 +175,7 @@ public void abort() throws IOException {
     if (fp == null) {
       return;
     }
-    IOUtils.cleanup(LOG, fp);
+    IOUtils.cleanupWithLogger(LOG, fp);
     fp = null;
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditsDoubleBuffer.java

@@ -24,8 +24,8 @@
 import java.util.Arrays;
 
 import org.apache.commons.codec.binary.Hex;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
 import org.apache.hadoop.hdfs.server.namenode.FSEditLogOp.Writer;
@@ -43,7 +43,8 @@
  */
 @InterfaceAudience.Private
 public class EditsDoubleBuffer {
-  protected static final Log LOG = LogFactory.getLog(EditsDoubleBuffer.class);
+  protected static final Logger LOG =
+      LoggerFactory.getLogger(EditsDoubleBuffer.class);
 
   private TxnBuffer bufCurrent; // current buffer for writing
   private TxnBuffer bufReady; // buffer ready for flushing

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogAsync.java

@@ -26,8 +26,8 @@
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.ipc.Server;
 import org.apache.hadoop.util.ExitUtil;
@@ -35,7 +35,7 @@
 import com.google.common.base.Preconditions;
 
 class FSEditLogAsync extends FSEditLog implements Runnable {
-  static final Log LOG = LogFactory.getLog(FSEditLog.class);
+  static final Logger LOG = LoggerFactory.getLogger(FSEditLog.class);
 
   // use separate mutex to avoid possible deadlock when stopping the thread.
   private final Object syncThreadLock = new Object();
@@ -203,7 +203,7 @@ public void run() {
 
   private void terminate(Throwable t) {
     String message = "Exception while edit logging: "+t.getMessage();
-    LOG.fatal(message, t);
+    LOG.error(message, t);
     ExitUtil.terminate(1, message);
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java

@@ -28,8 +28,8 @@
 import java.util.EnumSet;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.FileSystem;
@@ -121,7 +121,8 @@
 @InterfaceAudience.Private
 @InterfaceStability.Evolving
 public class FSEditLogLoader {
-  static final Log LOG = LogFactory.getLog(FSEditLogLoader.class.getName());
+  static final Logger LOG =
+      LoggerFactory.getLogger(FSEditLogLoader.class.getName());
   static final long REPLAY_TRANSACTION_LOG_INTERVAL = 1000; // 1sec
 
   private final FSNamesystem fsNamesys;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java

@@ -37,8 +37,8 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -83,7 +83,8 @@
 @InterfaceAudience.Private
 @InterfaceStability.Evolving
 public class FSImage implements Closeable {
-  public static final Log LOG = LogFactory.getLog(FSImage.class.getName());
+  public static final Logger LOG =
+      LoggerFactory.getLogger(FSImage.class.getName());
 
   protected FSEditLog editLog = null;
   private boolean isUpgradeFinalized = false;
@@ -1136,7 +1137,7 @@ public synchronized void saveNamespace(FSNamesystem source, NameNodeFile nnf,
     getStorage().updateNameDirSize();
 
     if (exitAfterSave.get()) {
-      LOG.fatal("NameNode process will exit now... The saved FsImage " +
+      LOG.error("NameNode process will exit now... The saved FsImage " +
           nnf + " is potentially corrupted.");
       ExitUtil.terminate(-1);
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java

@@ -37,7 +37,7 @@
 import java.util.Map;
 import java.util.TreeMap;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -181,7 +181,7 @@
 @InterfaceAudience.Private
 @InterfaceStability.Evolving
 public class FSImageFormat {
-  private static final Log LOG = FSImage.LOG;
+  private static final Logger LOG = FSImage.LOG;
 
   // Static-only class
   private FSImageFormat() {}
@@ -231,7 +231,7 @@ public void load(File file, boolean requireSameLayoutVersion)
           loader.load(file);
         }
       } finally {
-        IOUtils.cleanup(LOG, is);
+        IOUtils.cleanupWithLogger(LOG, is);
       }
     }
   }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormatPBINode.java

@@ -26,8 +26,8 @@
 import java.util.Iterator;
 import java.util.List;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.fs.permission.AclEntry;
@@ -104,7 +104,8 @@ public final class FSImageFormatPBINode {
       XAttr.NameSpace.values();
   
 
-  private static final Log LOG = LogFactory.getLog(FSImageFormatPBINode.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(FSImageFormatPBINode.class);
 
   public final static class Loader {
     public static PermissionStatus loadPermission(long id,

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImagePreTransactionalStorageInspector.java

@@ -29,8 +29,8 @@
 import java.util.List;
 import java.util.Set;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.FileUtil;
@@ -51,8 +51,8 @@
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 class FSImagePreTransactionalStorageInspector extends FSImageStorageInspector {
-  private static final Log LOG =
+  private static final Logger LOG =
-    LogFactory.getLog(FSImagePreTransactionalStorageInspector.class);
+      LoggerFactory.getLogger(FSImagePreTransactionalStorageInspector.class);
   
   /* Flag if there is at least one storage dir that doesn't contain the newest
    * fstime */
@@ -136,7 +136,7 @@ static long readCheckpointTime(StorageDirectory sd) throws IOException {
         in.close();
         in = null;
       } finally {
-        IOUtils.cleanup(LOG, in);
+        IOUtils.cleanupWithLogger(LOG, in);
       }
     }
     return timeStamp;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageTransactionalStorageInspector.java

@@ -28,8 +28,8 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory;
 import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeDirType;
@@ -39,7 +39,7 @@
 import com.google.common.collect.Lists;
 
 class FSImageTransactionalStorageInspector extends FSImageStorageInspector {
-  public static final Log LOG = LogFactory.getLog(
+  public static final Logger LOG = LoggerFactory.getLogger(
     FSImageTransactionalStorageInspector.class);
 
   private boolean needToSave = false;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java

@@ -307,9 +307,9 @@
 import org.apache.hadoop.util.ReflectionUtils;
 import org.apache.hadoop.util.StringUtils;
 import org.apache.hadoop.util.VersionInfo;
+import org.apache.log4j.Logger;
 import org.apache.log4j.Appender;
 import org.apache.log4j.AsyncAppender;
-import org.apache.log4j.Logger;
 import org.eclipse.jetty.util.ajax.JSON;
 
 import com.google.common.annotations.VisibleForTesting;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSPermissionChecker.java

@@ -24,8 +24,8 @@
 import java.util.Stack;
 
 import com.google.common.base.Preconditions;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.fs.FSExceptionMessages;
 import org.apache.hadoop.fs.ParentNotDirectoryException;
 import org.apache.hadoop.fs.permission.AclEntryScope;
@@ -47,7 +47,7 @@
  * Some of the helper methods are guarded by {@link FSNamesystem#readLock()}.
  */
 public class FSPermissionChecker implements AccessControlEnforcer {
-  static final Log LOG = LogFactory.getLog(UserGroupInformation.class);
+  static final Logger LOG = LoggerFactory.getLogger(UserGroupInformation.class);
 
   private static String getPath(byte[][] components, int start, int end) {
     return DFSUtil.byteArray2PathString(components, start, end - start + 1);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FileJournalManager.java

@@ -17,8 +17,8 @@
  */
 package org.apache.hadoop.hdfs.server.namenode;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -60,7 +60,8 @@
  */
 @InterfaceAudience.Private
 public class FileJournalManager implements JournalManager {
-  private static final Log LOG = LogFactory.getLog(FileJournalManager.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(FileJournalManager.class);
 
   private final Configuration conf;
   private final StorageDirectory sd;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INode.java

@@ -25,8 +25,8 @@
 
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Maps;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.fs.ContentSummary;
 import org.apache.hadoop.fs.Path;
@@ -56,7 +56,7 @@
  */
 @InterfaceAudience.Private
 public abstract class INode implements INodeAttributes, Diff.Element<byte[]> {
-  public static final Log LOG = LogFactory.getLog(INode.class);
+  public static final Logger LOG = LoggerFactory.getLogger(INode.class);
 
   /** parent is either an {@link INodeDirectory} or an {@link INodeReference}.*/
   private INode parent = null;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodesInPath.java

@@ -19,8 +19,8 @@
 
 import java.util.Arrays;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
@@ -36,7 +36,7 @@
  * Contains INodes information resolved from a given path.
  */
 public class INodesInPath {
-  public static final Log LOG = LogFactory.getLog(INodesInPath.class);
+  public static final Logger LOG = LoggerFactory.getLogger(INodesInPath.class);
 
   /**
    * @return true if path component is {@link HdfsConstants#DOT_SNAPSHOT_DIR}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ImageServlet.java

@@ -35,8 +35,8 @@
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.DFSUtilClient;
 import org.apache.hadoop.security.SecurityUtil;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSUtil;
@@ -72,7 +72,7 @@ public class ImageServlet extends HttpServlet {
 
   private static final long serialVersionUID = -7669068179452648952L;
 
-  private static final Log LOG = LogFactory.getLog(ImageServlet.class);
+  private static final Logger LOG = LoggerFactory.getLogger(ImageServlet.class);
 
   public final static String CONTENT_DISPOSITION = "Content-Disposition";
   public final static String HADOOP_IMAGE_EDITS_HEADER = "X-Image-Edits-Name";

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/JournalSet.java

@@ -30,8 +30,8 @@
 import java.util.SortedSet;
 import java.util.concurrent.CopyOnWriteArrayList;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.hdfs.server.common.Storage;
 import org.apache.hadoop.hdfs.server.common.StorageInfo;
@@ -54,7 +54,7 @@
 @InterfaceAudience.Private
 public class JournalSet implements JournalManager {
 
-  static final Log LOG = LogFactory.getLog(FSEditLog.class);
+  static final Logger LOG = LoggerFactory.getLogger(FSEditLog.class);
 
   // we want local logs to be ordered earlier in the collection, and true
   // is considered larger than false, so reverse the comparator
@@ -387,7 +387,7 @@ private void mapJournalsAndReportErrors(
         if (jas.isRequired()) {
           final String msg = "Error: " + status + " failed for required journal ("
             + jas + ")";
-          LOG.fatal(msg, t);
+          LOG.error(msg, t);
           // If we fail on *any* of the required journals, then we must not
           // continue on any of the other journals. Abort them to ensure that
           // retry behavior doesn't allow them to keep going in any way.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/MetaRecoveryContext.java

@@ -22,14 +22,15 @@
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 
 /** Context data for an ongoing NameNode metadata recovery process. */
 @InterfaceAudience.Private
 @InterfaceStability.Evolving
 public final class MetaRecoveryContext  {
-  public static final Log LOG = LogFactory.getLog(MetaRecoveryContext.class.getName());
+  public static final Logger LOG =
+      LoggerFactory.getLogger(MetaRecoveryContext.class.getName());
   public final static int FORCE_NONE = 0;
   public final static int FORCE_FIRST_CHOICE = 1;
   public final static int FORCE_ALL = 2;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NNStorageRetentionManager.java

@@ -28,8 +28,8 @@
 import java.util.List;
 import java.util.TreeSet;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.server.namenode.FSImageStorageInspector.FSImageFile;
@@ -56,7 +56,7 @@ public class NNStorageRetentionManager {
   private final int numCheckpointsToRetain;
   private final long numExtraEditsToRetain;
   private final int maxExtraEditsSegmentsToRetain;
-  private static final Log LOG = LogFactory.getLog(
+  private static final Logger LOG = LoggerFactory.getLogger(
       NNStorageRetentionManager.class);
   private final NNStorage storage;
   private final StoragePurger purger;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NNUpgradeUtil.java

@@ -27,8 +27,8 @@
 import java.nio.file.attribute.BasicFileAttributes;
 import java.util.Collections;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.server.common.Storage;
 import org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory;
@@ -38,7 +38,8 @@
 
 public abstract class NNUpgradeUtil {
   
-  private static final Log LOG = LogFactory.getLog(NNUpgradeUtil.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(NNUpgradeUtil.class);
   
   /**
    * Return true if this storage dir can roll back to the previous storage

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameCache.java

@@ -20,8 +20,8 @@
 import java.util.HashMap;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 
 /**
  * Caches frequently used names to facilitate reuse.
@@ -62,7 +62,7 @@ int get() {
     }
   }
 
-  static final Log LOG = LogFactory.getLog(NameCache.class.getName());
+  static final Logger LOG = LoggerFactory.getLogger(NameCache.class.getName());
 
   /** indicates initialization is in progress */
   private boolean initialized = false;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeResourceChecker.java

@@ -25,8 +25,8 @@
 import java.util.HashMap;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.DF;
@@ -47,7 +47,8 @@
  */
 @InterfaceAudience.Private
 public class NameNodeResourceChecker {
-  private static final Log LOG = LogFactory.getLog(NameNodeResourceChecker.class.getName());
+  private static final Logger LOG =
+      LoggerFactory.getLogger(NameNodeResourceChecker.class.getName());
 
   // Space (in bytes) reserved per volume.
   private final long duReserved;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeFsck.java

@@ -36,8 +36,8 @@
 import java.util.concurrent.ThreadLocalRandom;
 
 import org.apache.commons.io.IOUtils;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.Path;
@@ -112,7 +112,8 @@
  */
 @InterfaceAudience.Private
 public class NamenodeFsck implements DataEncryptionKeyFactory {
-  public static final Log LOG = LogFactory.getLog(NameNode.class.getName());
+  public static final Logger LOG =
+      LoggerFactory.getLogger(NameNode.class.getName());
 
   // return string marking fsck status
   public static final String CORRUPT_STATUS = "is CORRUPT";
@@ -358,7 +359,7 @@ public void fsck() {
           blockIdCK(blk);
           sb.append(blk + "\n");
         }
-        LOG.info(sb);
+        LOG.info("{}", sb.toString());
         namenode.getNamesystem().logFsckEvent("/", remoteAddress);
         out.flush();
         return;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/RedundantEditLogInputStream.java

@@ -21,8 +21,8 @@
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Comparator;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
 import org.apache.hadoop.io.IOUtils;
 
@@ -37,7 +37,7 @@
  * different subset of the available edits.
  */
 class RedundantEditLogInputStream extends EditLogInputStream {
-  public static final Log LOG = LogFactory.getLog(
+  public static final Logger LOG = LoggerFactory.getLogger(
       RedundantEditLogInputStream.class.getName());
   private int curIdx;
   private long prevTxId;
@@ -152,7 +152,7 @@ public long getLastTxId() {
 
   @Override
   public void close() throws IOException {
-    IOUtils.cleanup(LOG,  streams);
+    IOUtils.cleanupWithLogger(LOG,  streams);
   }
 
   @Override

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/SecondaryNameNode.java

@@ -38,8 +38,8 @@
 import org.apache.commons.cli.Options;
 import org.apache.commons.cli.ParseException;
 import org.apache.commons.cli.PosixParser;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
@@ -103,8 +103,8 @@ public class SecondaryNameNode implements Runnable,
   static{
     HdfsConfiguration.init();
   }
-  public static final Log LOG = 
+  public static final Logger LOG =
-    LogFactory.getLog(SecondaryNameNode.class.getName());
+      LoggerFactory.getLogger(SecondaryNameNode.class.getName());
 
   private final long starttime = Time.now();
   private volatile long lastCheckpointTime = 0;
@@ -367,12 +367,12 @@ public void doWork() {
         // Prevent a huge number of edits from being created due to
         // unrecoverable conditions and endless retries.
         if (checkpointImage.getMergeErrorCount() > maxRetries) {
-          LOG.fatal("Merging failed " + 
+          LOG.error("Merging failed " +
               checkpointImage.getMergeErrorCount() + " times.");
           terminate(1);
         }
       } catch (Throwable e) {
-        LOG.fatal("Throwable Exception in doCheckpoint", e);
+        LOG.error("Throwable Exception in doCheckpoint", e);
         e.printStackTrace();
         terminate(1, e);
       }
@@ -676,7 +676,7 @@ boolean shouldCheckpointBasedOnCount() throws IOException {
   public static void main(String[] argv) throws Exception {
     CommandLineOpts opts = SecondaryNameNode.parseArgs(argv);
     if (opts == null) {
-      LOG.fatal("Failed to parse options");
+      LOG.error("Failed to parse options");
       terminate(1);
     } else if (opts.shouldPrintHelp()) {
       opts.usage();
@@ -703,7 +703,7 @@ public static void main(String[] argv) throws Exception {
         secondary.join();
       }
     } catch (Throwable e) {
-      LOG.fatal("Failed to start secondary namenode", e);
+      LOG.error("Failed to start secondary namenode", e);
       terminate(1);
     }
   }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/StartupProgressServlet.java

@@ -103,7 +103,7 @@ protected void doGet(HttpServletRequest req, HttpServletResponse resp)
       json.writeEndArray();
       json.writeEndObject();
     } finally {
-      IOUtils.cleanup(LOG, json);
+      IOUtils.cleanupWithLogger(LOG, json);
     }
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/TransferFsImage.java

@@ -32,8 +32,8 @@
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileUtil;
@@ -95,7 +95,8 @@ public static TransferResult getResultForCode(int code){
 
   @VisibleForTesting
   static int timeout = 0;
-  private static final Log LOG = LogFactory.getLog(TransferFsImage.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(TransferFsImage.class);
   
   public static void downloadMostRecentImageToDirectory(URL infoServer,
       File dir) throws IOException {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/BootstrapStandby.java

@@ -31,8 +31,8 @@
 import java.util.List;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configurable;
@@ -76,7 +76,8 @@
  */
 @InterfaceAudience.Private
 public class BootstrapStandby implements Tool, Configurable {
-  private static final Log LOG = LogFactory.getLog(BootstrapStandby.class);
+  private static final Logger LOG =
+      LoggerFactory.getLogger(BootstrapStandby.class);
   private String nsId;
   private String nnId;
   private List<RemoteNameNodeInfo> remoteNNs;
@@ -182,14 +183,14 @@ private int doRun() throws IOException {
     }
 
     if (nsInfo == null) {
-      LOG.fatal(
+      LOG.error(
           "Unable to fetch namespace information from any remote NN. Possible NameNodes: "
               + remoteNNs);
       return ERR_CODE_FAILED_CONNECT;
     }
 
     if (!checkLayoutVersion(nsInfo)) {
-      LOG.fatal("Layout version on remote node (" + nsInfo.getLayoutVersion()
+      LOG.error("Layout version on remote node (" + nsInfo.getLayoutVersion()
           + ") does not match " + "this node's layout version ("
           + HdfsServerConstants.NAMENODE_LAYOUT_VERSION + ")");
       return ERR_CODE_INVALID_VERSION;
@@ -382,7 +383,7 @@ private boolean checkLogsAvailableForRead(FSImage image, long imageTxId,
           "Please copy these logs into the shared edits storage " + 
           "or call saveNamespace on the active node.\n" +
           "Error: " + e.getLocalizedMessage();
-      LOG.fatal(msg, e);
+      LOG.error(msg, e);
 
       return false;
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/EditLogTailer.java

@@ -36,8 +36,8 @@
 
 import com.google.common.collect.Iterators;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
@@ -73,7 +73,7 @@
 @InterfaceAudience.Private
 @InterfaceStability.Evolving
 public class EditLogTailer {
-  public static final Log LOG = LogFactory.getLog(EditLogTailer.class);
+  public static final Logger LOG = LoggerFactory.getLogger(EditLogTailer.class);
 
   /**
    * StandbyNode will hold namesystem lock to apply at most this many journal
@@ -471,7 +471,7 @@ private void doWork() {
           // interrupter should have already set shouldRun to false
           continue;
         } catch (Throwable t) {
-          LOG.fatal("Unknown error encountered while tailing edits. " +
+          LOG.error("Unknown error encountered while tailing edits. " +
               "Shutting down standby NN.", t);
           terminate(1, t);
         }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/web/resources/NamenodeWebHdfsMethods.java

@@ -56,8 +56,8 @@
 import javax.ws.rs.core.Response.ResponseBuilder;
 import javax.ws.rs.core.Response.Status;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.ContentSummary;
 import org.apache.hadoop.fs.FileEncryptionInfo;
@@ -117,7 +117,8 @@
 @Path("")
 @ResourceFilters(ParamFilter.class)
 public class NamenodeWebHdfsMethods {
-  public static final Log LOG = LogFactory.getLog(NamenodeWebHdfsMethods.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(NamenodeWebHdfsMethods.class);
 
   private static final UriFsPathParam ROOT = new UriFsPathParam("");
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java

@@ -40,8 +40,8 @@
 
 import com.google.common.base.Joiner;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.conf.ReconfigurationTaskStatus;
@@ -114,7 +114,7 @@ public class DFSAdmin extends FsShell {
     HdfsConfiguration.init();
   }
   
-  private static final Log LOG = LogFactory.getLog(DFSAdmin.class);
+  private static final Logger LOG = LoggerFactory.getLogger(DFSAdmin.class);
 
   /**
    * An abstract class for the execution of a file system command

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSHAAdmin.java

@@ -21,8 +21,8 @@
 import java.util.Arrays;
 import java.util.Collection;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.ha.HAAdmin;
@@ -38,7 +38,7 @@
  */
 public class DFSHAAdmin extends HAAdmin {
 
-  private static final Log LOG = LogFactory.getLog(DFSHAAdmin.class);
+  private static final Logger LOG = LoggerFactory.getLogger(DFSHAAdmin.class);
 
   private String nameserviceId;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSZKFailoverController.java

@@ -30,8 +30,8 @@
 import java.util.List;
 
 import com.google.common.annotations.VisibleForTesting;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
@@ -61,8 +61,8 @@
 @InterfaceAudience.Private
 public class DFSZKFailoverController extends ZKFailoverController {
 
-  private static final Log LOG =
+  private static final Logger LOG =
-    LogFactory.getLog(DFSZKFailoverController.class);
+      LoggerFactory.getLogger(DFSZKFailoverController.class);
   private final AccessControlList adminAcl;
   /* the same as superclass's localTarget, but with the more specfic NN type */
   private final NNHAServiceTarget localNNTarget;
@@ -194,7 +194,7 @@ public static void main(String args[])
     try {
       System.exit(zkfc.run(parser.getRemainingArgs()));
     } catch (Throwable t) {
-      LOG.fatal("DFSZKFailOverController exiting due to earlier exception "
+      LOG.error("DFSZKFailOverController exiting due to earlier exception "
           + t);
       terminate(1, t);
     }
@@ -243,7 +243,7 @@ private void getLocalNNThreadDump() {
           new StringBuilder("-- Local NN thread dump -- \n");
       localNNThreadDumpContent.append(out);
       localNNThreadDumpContent.append("\n -- Local NN thread dump -- ");
-      LOG.info(localNNThreadDumpContent);
+      LOG.info("{}", localNNThreadDumpContent.toString());
       isThreadDumpCaptured = true;
     } catch (IOException e) {
       LOG.warn("Can't get local NN thread dump due to " + e.getMessage());

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DelegationTokenFetcher.java

@@ -28,8 +28,8 @@
 
 import org.apache.commons.cli.CommandLine;
 import org.apache.commons.cli.Options;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
@@ -57,8 +57,8 @@ public class DelegationTokenFetcher {
   private static final String CANCEL = "cancel";
   private static final String HELP = "help";
   private static final String HELP_SHORT = "h";
-  private static final Log LOG = LogFactory
+  private static final Logger LOG = LoggerFactory
-      .getLog(DelegationTokenFetcher.class);
+      .getLogger(DelegationTokenFetcher.class);
   private static final String PRINT = "print";
   private static final String RENEW = "renew";
   private static final String RENEWER = "renewer";

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/GetGroups.java

@@ -21,8 +21,8 @@
 import java.io.PrintStream;
 import java.net.InetSocketAddress;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
@@ -43,7 +43,7 @@
 @InterfaceAudience.Private
 public class GetGroups extends GetGroupsBase {
   
-  private static final Log LOG = LogFactory.getLog(GetGroups.class);
+  private static final Logger LOG = LoggerFactory.getLogger(GetGroups.class);
   
   static final String USAGE = "Usage: hdfs groups [username ...]";
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineEditsViewer/OfflineEditsBinaryLoader.java

@@ -19,8 +19,8 @@
 
 import java.io.IOException;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.hdfs.tools.offlineEditsViewer.OfflineEditsViewer;
@@ -40,8 +40,8 @@ class OfflineEditsBinaryLoader implements OfflineEditsLoader {
   private final boolean fixTxIds;
   private final boolean recoveryMode;
   private long nextTxId;
-  public static final Log LOG =
+  public static final Logger LOG =
-      LogFactory.getLog(OfflineEditsBinaryLoader.class.getName());
+      LoggerFactory.getLogger(OfflineEditsBinaryLoader.class.getName());
   
   /**
    * Constructor
@@ -102,7 +102,7 @@ public void loadEdits() throws IOException {
       }
       visitor.close(null);
     } finally {
-      IOUtils.cleanup(LOG, inputStream);
+      IOUtils.cleanupWithLogger(LOG, inputStream);
     }
   }
 }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/FSImageHandler.java

@@ -30,8 +30,8 @@
 import io.netty.handler.codec.http.HttpRequest;
 import io.netty.handler.codec.http.HttpResponseStatus;
 import io.netty.handler.codec.http.QueryStringDecoder;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hdfs.web.JsonUtil;
 import org.apache.hadoop.util.StringUtils;
 
@@ -58,7 +58,8 @@
  * Implement the read-only WebHDFS API for fsimage.
  */
 class FSImageHandler extends SimpleChannelInboundHandler<HttpRequest> {
-  public static final Log LOG = LogFactory.getLog(FSImageHandler.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(FSImageHandler.class);
   private final FSImageLoader image;
   private final ChannelGroup activeChannels;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/FSImageLoader.java

@@ -34,8 +34,8 @@
 import com.google.protobuf.CodedInputStream;
 import com.google.protobuf.InvalidProtocolBufferException;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.XAttr;
 import org.apache.hadoop.fs.permission.AclEntry;
@@ -65,7 +65,8 @@
  * file status of the namespace of the fsimage.
  */
 class FSImageLoader {
-  public static final Log LOG = LogFactory.getLog(FSImageHandler.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(FSImageHandler.class);
 
   private final String[] stringTable;
   // byte representation of inodes, sorted by id

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/OfflineImageReconstructor.java

@@ -54,8 +54,8 @@
 import com.google.protobuf.ByteString;
 import com.google.protobuf.TextFormat;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.permission.AclEntry;
@@ -96,8 +96,8 @@
 @InterfaceAudience.Private
 @InterfaceStability.Unstable
 class OfflineImageReconstructor {
-  public static final Log LOG =
+  public static final Logger LOG =
-      LogFactory.getLog(OfflineImageReconstructor.class);
+      LoggerFactory.getLogger(OfflineImageReconstructor.class);
 
   /**
    * The output stream.
@@ -1839,7 +1839,7 @@ public static void run(String inputPath, String outputPath)
           new OfflineImageReconstructor(out, reader);
       oir.processXml();
     } finally {
-      IOUtils.cleanup(LOG, reader, fis, out, fout);
+      IOUtils.cleanupWithLogger(LOG, reader, fis, out, fout);
     }
     // Write the md5 file
     MD5FileUtils.saveMD5File(new File(outputPath),

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/OfflineImageViewer.java

@@ -30,8 +30,8 @@
 import org.apache.commons.cli.Options;
 import org.apache.commons.cli.ParseException;
 import org.apache.commons.cli.PosixParser;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.io.IOUtils;
@@ -44,7 +44,8 @@
  */
 @InterfaceAudience.Private
 public class OfflineImageViewer {
-  public static final Log LOG = LogFactory.getLog(OfflineImageViewer.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(OfflineImageViewer.class);
   
   private final static String usage =
       "Usage: bin/hdfs oiv_legacy [OPTIONS] -i INPUTFILE -o OUTPUTFILE\n"
@@ -145,7 +146,7 @@ public void go() throws IOException  {
           LOG.error("Failed to load image file.");
         }
       }
-      IOUtils.cleanup(LOG, in, tracker);
+      IOUtils.cleanupWithLogger(LOG, in, tracker);
     }
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/OfflineImageViewerPB.java

@@ -28,8 +28,8 @@
 import org.apache.commons.cli.Options;
 import org.apache.commons.cli.ParseException;
 import org.apache.commons.cli.PosixParser;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.net.NetUtils;
@@ -44,7 +44,8 @@
 public class OfflineImageViewerPB {
   private static final String HELP_OPT = "-h";
   private static final String HELP_LONGOPT = "--help";
-  public static final Log LOG = LogFactory.getLog(OfflineImageViewerPB.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(OfflineImageViewerPB.class);
 
   private final static String usage = "Usage: bin/hdfs oiv [OPTIONS] -i INPUTFILE -o OUTPUTFILE\n"
       + "Offline Image Viewer\n"

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/WebImageViewer.java

@@ -32,8 +32,8 @@
 import io.netty.handler.codec.http.HttpResponseEncoder;
 import io.netty.handler.codec.string.StringEncoder;
 import io.netty.util.concurrent.GlobalEventExecutor;
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
 import org.apache.hadoop.security.UserGroupInformation;
@@ -47,7 +47,8 @@
  * namespace.
  */
 public class WebImageViewer implements Closeable {
-  public static final Log LOG = LogFactory.getLog(WebImageViewer.class);
+  public static final Logger LOG =
+      LoggerFactory.getLogger(WebImageViewer.class);
 
   private Channel channel;
   private InetSocketAddress address;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/AtomicFileOutputStream.java

@@ -23,8 +23,8 @@
 import java.io.FilterOutputStream;
 import java.io.IOException;
 
-import org.apache.commons.logging.Log;
+import org.slf4j.Logger;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.LoggerFactory;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.io.nativeio.NativeIO;
 import org.apache.hadoop.io.nativeio.NativeIOException;
@@ -46,7 +46,7 @@ public class AtomicFileOutputStream extends FilterOutputStream {
 
   private static final String TMP_EXTENSION = ".tmp";
   
-  private final static Log LOG = LogFactory.getLog(
+  private final static Logger LOG = LoggerFactory.getLogger(
       AtomicFileOutputStream.class);
   
   private final File origFile;