HDFS-9402. Switch DataNode.LOG to use slf4j. Contributed by Walter Su.

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -804,6 +804,8 @@ Release 2.8.0 - UNRELEASED
     HDFS-9439. Include status of closeAck into exception message in DataNode#run.
     (Xiao Chen via Yongjun Zhang)
 
+    HDFS-9402. Switch DataNode.LOG to use slf4j. (Walter Su via wheat9)
+
   OPTIMIZATIONS
 
     HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than

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

@@ -22,7 +22,6 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
 
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
@@ -34,6 +33,8 @@ import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB;
 import org.apache.hadoop.hdfs.server.protocol.*;
 import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo.BlockStatus;
 
+import org.slf4j.Logger;
+
 import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.util.ArrayList;
@@ -52,7 +53,7 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
  */
 @InterfaceAudience.Private
 class BPOfferService {
-  static final Log LOG = DataNode.LOG;
+  static final Logger LOG = DataNode.LOG;
   
   /**
    * Information about the namespace that this service

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

@@ -32,7 +32,6 @@ import java.util.concurrent.ThreadLocalRandom;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 import com.google.common.base.Joiner;
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
 import org.apache.hadoop.hdfs.client.BlockReportOptions;
@@ -65,6 +64,7 @@ import org.apache.hadoop.util.VersionUtil;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.Maps;
+import org.slf4j.Logger;
 
 /**
  * A thread per active or standby namenode to perform:
@@ -78,7 +78,7 @@ import com.google.common.collect.Maps;
 @InterfaceAudience.Private
 class BPServiceActor implements Runnable {
   
-  static final Log LOG = DataNode.LOG;
+  static final Logger LOG = DataNode.LOG;
   final InetSocketAddress nnAddr;
   HAServiceState state;
 
@@ -600,7 +600,7 @@ class BPServiceActor implements Runnable {
   private synchronized void cleanUp() {
     
     shouldServiceRun = false;
-    IOUtils.cleanup(LOG, bpNamenode);
+    IOUtils.cleanup(null, bpNamenode);
     bpos.shutdownActor(this);
   }
 
@@ -834,7 +834,7 @@ class BPServiceActor implements Runnable {
             sleepAndLogInterrupts(5000, "initializing");
           } else {
             runningState = RunningState.FAILED;
-            LOG.fatal("Initialization failed for " + this + ". Exiting. ", ioe);
+            LOG.error("Initialization failed for " + this + ". Exiting. ", ioe);
             return;
           }
         }

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

@@ -23,7 +23,6 @@ import java.security.PrivilegedExceptionAction;
 import java.util.*;
 import java.util.concurrent.CopyOnWriteArrayList;
 
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -35,6 +34,7 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
+import org.slf4j.Logger;
 
 /**
  * Manages the BPOfferService objects for the data node.
@@ -43,7 +43,7 @@ import com.google.common.collect.Sets;
  */
 @InterfaceAudience.Private
 class BlockPoolManager {
-  private static final Log LOG = DataNode.LOG;
+  private static final Logger LOG = DataNode.LOG;
   
   private final Map<String, BPOfferService> bpByNameserviceId =
     Maps.newHashMap();

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

@@ -63,13 +63,14 @@ import static org.apache.hadoop.io.nativeio.NativeIO.POSIX.POSIX_FADV_DONTNEED;
 import static org.apache.hadoop.io.nativeio.NativeIO.POSIX.SYNC_FILE_RANGE_WRITE;
 
 import com.google.common.annotations.VisibleForTesting;
+import org.slf4j.Logger;
 
 /** A class that receives a block and writes to its own disk, meanwhile
  * may copies it to another site. If a throttler is provided,
  * streaming throttling is also supported.
  **/
 class BlockReceiver implements Closeable {
-  public static final Log LOG = DataNode.LOG;
+  public static final Logger LOG = DataNode.LOG;
   static final Log ClientTraceLog = DataNode.ClientTraceLog;
 
   @VisibleForTesting
@@ -960,7 +961,7 @@ class BlockReceiver implements Closeable {
               // The worst case is not recovering this RBW replica. 
               // Client will fall back to regular pipeline recovery.
             } finally {
-              IOUtils.cleanup(LOG, out);
+              IOUtils.closeStream(out);
             }
             try {              
               // Even if the connection is closed after the ack packet is

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

@@ -18,7 +18,6 @@
 package org.apache.hadoop.hdfs.server.datanode;
 
 import com.google.common.base.Joiner;
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.protocol.DatanodeID;
@@ -32,6 +31,7 @@ import org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol;
 import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
 import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.util.Daemon;
+import org.slf4j.Logger;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -44,7 +44,7 @@ import java.util.List;
  */
 @InterfaceAudience.Private
 public class BlockRecoveryWorker {
-  public static final Log LOG = DataNode.LOG;
+  public static final Logger LOG = DataNode.LOG;
 
   private final DataNode datanode;
   private final Configuration conf;

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

@@ -55,6 +55,7 @@ import static org.apache.hadoop.io.nativeio.NativeIO.POSIX.POSIX_FADV_SEQUENTIAL
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
+import org.slf4j.Logger;
 
 /**
  * Reads a block from the disk and sends it to a recipient.
@@ -97,7 +98,7 @@ import com.google.common.base.Preconditions;
  *  no checksum error, it replies to DataNode with OP_STATUS_CHECKSUM_OK.
  */
 class BlockSender implements java.io.Closeable {
-  static final Log LOG = DataNode.LOG;
+  static final Logger LOG = DataNode.LOG;
   static final Log ClientTraceLog = DataNode.ClientTraceLog;
   private static final boolean is32Bit = 
       System.getProperty("sun.arch.data.model").equals("32");

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

@@ -212,6 +212,8 @@ import com.google.common.cache.CacheLoader;
 import com.google.common.cache.LoadingCache;
 import com.google.common.collect.Lists;
 import com.google.protobuf.BlockingService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**********************************************************
  * DataNode is a class (and program) that stores a set of
@@ -248,7 +250,7 @@ import com.google.protobuf.BlockingService;
 public class DataNode extends ReconfigurableBase
     implements InterDatanodeProtocol, ClientDatanodeProtocol,
         TraceAdminProtocol, DataNodeMXBean {
-  public static final Log LOG = LogFactory.getLog(DataNode.class);
+  public static final Logger LOG = LoggerFactory.getLogger(DataNode.class);
   
   static{
     HdfsConfiguration.init();
@@ -2602,7 +2604,7 @@ public class DataNode extends ReconfigurableBase
         errorCode = 1;
       }
     } catch (Throwable e) {
-      LOG.fatal("Exception in secureMain", e);
+      LOG.error("Exception in secureMain", e);
       terminate(1, e);
     } finally {
       // We need to terminate the process here because either shutdown was called

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

@@ -89,13 +89,14 @@ import org.apache.hadoop.util.DataChecksum;
 import com.google.common.base.Preconditions;
 import com.google.protobuf.ByteString;
 import org.apache.hadoop.util.Time;
+import org.slf4j.Logger;
 
 
 /**
  * Thread for processing incoming/outgoing data stream.
  */
 class DataXceiver extends Receiver implements Runnable {
-  public static final Log LOG = DataNode.LOG;
+  public static final Logger LOG = DataNode.LOG;
   static final Log ClientTraceLog = DataNode.ClientTraceLog;
   
   private Peer peer;
@@ -376,7 +377,7 @@ class DataXceiver extends Receiver implements Runnable {
             blk.getBlockId(), dnR.getDatanodeUuid(), success));
       }
       if (fis != null) {
-        IOUtils.cleanup(LOG, fis);
+        IOUtils.cleanup(null, fis);
       }
     }
   }

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

@@ -22,7 +22,6 @@ import java.net.SocketTimeoutException;
 import java.nio.channels.AsynchronousCloseException;
 import java.util.HashMap;
 
-import org.apache.commons.logging.Log;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.net.Peer;
@@ -32,6 +31,7 @@ import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.util.Daemon;
 
 import com.google.common.annotations.VisibleForTesting;
+import org.slf4j.Logger;
 
 /**
  * Server used for receiving/sending a block of data.
@@ -40,7 +40,7 @@ import com.google.common.annotations.VisibleForTesting;
  * Hadoop IPC mechanism.
  */
 class DataXceiverServer implements Runnable {
-  public static final Log LOG = DataNode.LOG;
+  public static final Logger LOG = DataNode.LOG;
   
   private final PeerServer peerServer;
   private final DataNode datanode;
@@ -262,7 +262,7 @@ class DataXceiverServer implements Runnable {
   synchronized void closeAllPeers() {
     LOG.info("Closing all peers.");
     for (Peer p : peers.keySet()) {
-      IOUtils.cleanup(LOG, p);
+      IOUtils.cleanup(null, p);
     }
     peers.clear();
     peersXceiver.clear();

hadoop-tools/hadoop-extras/src/test/java/org/apache/hadoop/tools/TestDistCh.java

@@ -38,6 +38,7 @@ import org.apache.hadoop.hdfs.server.datanode.DataNode;
 import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.mapred.MiniMRClientClusterFactory;
+import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration;
 import org.apache.log4j.Level;
 
@@ -45,7 +46,7 @@ public class TestDistCh extends junit.framework.TestCase {
   {
     ((Log4JLogger)LogFactory.getLog("org.apache.hadoop.hdfs.StateChange")
         ).getLogger().setLevel(Level.ERROR);
-    ((Log4JLogger)DataNode.LOG).getLogger().setLevel(Level.ERROR);
+    GenericTestUtils.setLogLevel(DataNode.LOG, Level.ERROR);
     ((Log4JLogger)LogFactory.getLog(FSNamesystem.class)).getLogger().setLevel(Level.ERROR);
   }