Revert "Replace use of Guava's Stopwatch with Hadoop's StopWatch. (ozawa)" because of missing JIRA's number.

This reverts commit 2eba7eb9aff5f7a1bf63ff1ebbe28d21fd37065b.

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -146,9 +146,6 @@ Trunk (Unreleased)
     HADOOP-11058. Missing HADOOP_CONF_DIR generates strange results
     (Masatake Iwasaki via aw)
 
-    HADOOP-11032. Replace use of Guava's Stopwatch with Hadoop's StopWatch
-    (ozawa)
-
   BUG FIXES
 
     HADOOP-9451. Fault single-layer config if node group topology is enabled.

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/JvmPauseMonitor.java

@@ -22,7 +22,6 @@ import java.lang.management.ManagementFactory;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import java.util.concurrent.TimeUnit;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -31,6 +30,7 @@ import org.apache.hadoop.conf.Configuration;
 
 import com.google.common.base.Joiner;
 import com.google.common.base.Preconditions;
+import com.google.common.base.Stopwatch;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
@@ -172,7 +172,7 @@ public class JvmPauseMonitor {
   private class Monitor implements Runnable {
     @Override
     public void run() {
-      StopWatch sw = new StopWatch();
+      Stopwatch sw = new Stopwatch();
       Map<String, GcTimes> gcTimesBeforeSleep = getGcTimes();
       while (shouldRun) {
         sw.reset().start();
@@ -181,7 +181,7 @@ public class JvmPauseMonitor {
         } catch (InterruptedException ie) {
           return;
         }
-        long extraSleepTime = sw.now(TimeUnit.MILLISECONDS) - SLEEP_INTERVAL_MS;
+        long extraSleepTime = sw.elapsedMillis() - SLEEP_INTERVAL_MS;
         Map<String, GcTimes> gcTimesAfterSleep = getGcTimes();
 
         if (extraSleepTime > warnThresholdMs) {

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StopWatch.java

@@ -1,108 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.hadoop.util;
-
-import java.io.Closeable;
-import java.util.concurrent.TimeUnit;
-
-/**
- * A simplified StopWatch implementation which can measure times in nanoseconds.
- */
-public class StopWatch implements Closeable {
-  private boolean isStarted;
-  private long startNanos;
-  private long currentElapsedNanos;
-
-  public StopWatch() {
-  }
-
-  /**
-   * The method is used to find out if the StopWatch is started.
-   * @return boolean If the StopWatch is started.
-   */
-  public boolean isRunning() {
-    return isStarted;
-  }
-
-  /**
-   * Start to measure times and make the state of stopwatch running.
-   * @return this instance of StopWatch.
-   */
-  public StopWatch start() {
-    if (isStarted) {
-      throw new IllegalStateException("StopWatch is already running");
-    }
-    isStarted = true;
-    startNanos = System.nanoTime();
-    return this;
-  }
-
-  /**
-   * Stop elapsed time and make the state of stopwatch stop.
-   * @return this instance of StopWatch.
-   */
-  public StopWatch stop() {
-    if (!isStarted) {
-      throw new IllegalStateException("StopWatch is already stopped");
-    }
-    long now = System.nanoTime();
-    isStarted = false;
-    currentElapsedNanos += now - startNanos;
-    return this;
-  }
-
-  /**
-   * Reset elapsed time to zero and make the state of stopwatch stop.
-   * @return this instance of StopWatch.
-   */
-  public StopWatch reset() {
-    currentElapsedNanos = 0;
-    isStarted = false;
-    return this;
-  }
-
-  /**
-   * @return current elapsed time in specified timeunit.
-   */
-  public long now(TimeUnit timeUnit) {
-    return timeUnit.convert(now(), TimeUnit.NANOSECONDS);
-
-  }
-
-  /**
-   * @return current elapsed time in nanosecond.
-   */
-  public long now() {
-    return isStarted ?
-        System.nanoTime() - startNanos + currentElapsedNanos :
-        currentElapsedNanos;
-  }
-
-  @Override
-  public String toString() {
-    return String.valueOf(now());
-  }
-
-  @Override
-  public void close() {
-    if (isStarted) {
-      stop();
-    }
-  }
-}

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

@@ -21,11 +21,12 @@ import static org.junit.Assert.*;
 
 import java.util.ArrayList;
 import java.util.Iterator;
-import java.util.concurrent.TimeUnit;
 
 import org.junit.Assert;
 import org.junit.Test;
 
+import com.google.common.base.Stopwatch;
+
 public class TestChunkedArrayList {
 
   @Test
@@ -70,24 +71,24 @@ public class TestChunkedArrayList {
       System.gc();
       {
         ArrayList<String> arrayList = new ArrayList<String>();
-        StopWatch sw = new StopWatch();
+        Stopwatch sw = new Stopwatch();
         sw.start();
         for (int i = 0; i < numElems; i++) {
           arrayList.add(obj);
         }
-        System.out.println("       ArrayList " + sw.now(TimeUnit.MILLISECONDS));
+        System.out.println("       ArrayList " + sw.elapsedMillis());
       }
       
       // test ChunkedArrayList
       System.gc();
       {
         ChunkedArrayList<String> chunkedList = new ChunkedArrayList<String>();
-        StopWatch sw = new StopWatch();
+        Stopwatch sw = new Stopwatch();
         sw.start();
         for (int i = 0; i < numElems; i++) {
           chunkedList.add(obj);
         }
-        System.out.println("ChunkedArrayList " + sw.now(TimeUnit.MILLISECONDS));
+        System.out.println("ChunkedArrayList " + sw.elapsedMillis());
       }
     }
   }

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

@@ -21,6 +21,8 @@ import java.nio.ByteBuffer;
 import java.util.Random;
 import java.util.concurrent.TimeUnit;
 
+import com.google.common.base.Stopwatch;
+
 import org.apache.hadoop.fs.ChecksumException;
 import org.junit.Test;
 
@@ -145,19 +147,19 @@ public class TestDataChecksum {
     Harness h = new Harness(checksum, dataLength, true);
 
     for (int i = 0; i < NUM_RUNS; i++) {
-      StopWatch s = new StopWatch().start();
+      Stopwatch s = new Stopwatch().start();
       // calculate real checksum, make sure it passes
       checksum.calculateChunkedSums(h.dataBuf, h.checksumBuf);
       s.stop();
       System.err.println("Calculate run #" + i + ": " +
-                         s.now(TimeUnit.MICROSECONDS) + "us");
+                         s.elapsedTime(TimeUnit.MICROSECONDS) + "us");
 
-      s = new StopWatch().start();
+      s = new Stopwatch().start();
       // calculate real checksum, make sure it passes
       checksum.verifyChunkedSums(h.dataBuf, h.checksumBuf, "fake file", 0);
       s.stop();
       System.err.println("Verify run #" + i + ": " +
-                         s.now(TimeUnit.MICROSECONDS) + "us");
+                         s.elapsedTime(TimeUnit.MICROSECONDS) + "us");
     }
   }
 

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

@@ -1,62 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.hadoop.util;
-
-import org.junit.Assert;
-import org.junit.Test;
-
-public class TestStopWatch {
-
-  @Test
-  public void testStartAndStop() throws Exception {
-    try (StopWatch sw = new StopWatch()) {
-      Assert.assertFalse(sw.isRunning());
-      sw.start();
-      Assert.assertTrue(sw.isRunning());
-      sw.stop();
-      Assert.assertFalse(sw.isRunning());
-    }
-  }
-
-  @Test
-  public void testStopInTryWithResource() throws Exception {
-    try (StopWatch sw = new StopWatch()) {
-      // make sure that no exception is thrown.
-    }
-  }
-
-  @Test
-  public void testExceptions() throws Exception {
-    StopWatch sw = new StopWatch();
-    try {
-      sw.stop();
-    } catch (Exception e) {
-      Assert.assertTrue("IllegalStateException is expected",
-          e instanceof IllegalStateException);
-    }
-    sw.reset();
-    sw.start();
-    try {
-      sw.start();
-    } catch (Exception e) {
-      Assert.assertTrue("IllegalStateException is expected",
-          e instanceof IllegalStateException);
-    }
-  }
-
-}

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

@@ -479,9 +479,6 @@ Release 2.7.0 - UNRELEASED
     HDFS-7484. Make FSDirectory#addINode take existing INodes as its parameter.
     (jing9)
 
-    HADOOP-11032. Replace use of Guava's Stopwatch with Hadoop's StopWatch
-    (ozawa)
-
   OPTIMIZATIONS
 
     HDFS-7454. Reduce memory footprint for AclEntries in NameNode.

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

@@ -52,10 +52,10 @@ import org.apache.hadoop.hdfs.server.protocol.RemoteEditLogManifest;
 import org.apache.hadoop.ipc.ProtobufRpcEngine;
 import org.apache.hadoop.ipc.RPC;
 import org.apache.hadoop.security.SecurityUtil;
-import org.apache.hadoop.util.StopWatch;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
+import com.google.common.base.Stopwatch;
 import com.google.common.net.InetAddresses;
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
@@ -143,7 +143,7 @@ public class IPCLoggerChannel implements AsyncLogger {
   /**
    * Stopwatch which starts counting on each heartbeat that is sent
    */
-  private final StopWatch lastHeartbeatStopwatch = new StopWatch();
+  private final Stopwatch lastHeartbeatStopwatch = new Stopwatch();
   
   private static final long HEARTBEAT_INTERVAL_MILLIS = 1000;
 
@@ -463,8 +463,8 @@ public class IPCLoggerChannel implements AsyncLogger {
    * written.
    */
   private void heartbeatIfNecessary() throws IOException {
-    if (lastHeartbeatStopwatch.now(TimeUnit.MILLISECONDS)
-        > HEARTBEAT_INTERVAL_MILLIS || !lastHeartbeatStopwatch.isRunning()) {
+    if (lastHeartbeatStopwatch.elapsedMillis() > HEARTBEAT_INTERVAL_MILLIS ||
+        !lastHeartbeatStopwatch.isRunning()) {
       try {
         getProxy().heartbeat(createReqInfo());
       } finally {

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

@@ -65,11 +65,11 @@ import org.apache.hadoop.security.UserGroupInformation;
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Charsets;
 import com.google.common.base.Preconditions;
+import com.google.common.base.Stopwatch;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Range;
 import com.google.common.collect.Ranges;
 import com.google.protobuf.TextFormat;
-import org.apache.hadoop.util.StopWatch;
 
 /**
  * A JournalNode can manage journals for several clusters at once.
@@ -374,20 +374,15 @@ public class Journal implements Closeable {
     
     curSegment.writeRaw(records, 0, records.length);
     curSegment.setReadyToFlush();
-    StopWatch sw = new StopWatch();
+    Stopwatch sw = new Stopwatch();
     sw.start();
     curSegment.flush(shouldFsync);
     sw.stop();
-
-    long nanoSeconds = sw.now();
-    metrics.addSync(
-        TimeUnit.MICROSECONDS.convert(nanoSeconds, TimeUnit.NANOSECONDS));
-    long milliSeconds = TimeUnit.MILLISECONDS.convert(
-        nanoSeconds, TimeUnit.NANOSECONDS);
-
-    if (milliSeconds > WARN_SYNC_MILLIS_THRESHOLD) {
+    
+    metrics.addSync(sw.elapsedTime(TimeUnit.MICROSECONDS));
+    if (sw.elapsedTime(TimeUnit.MILLISECONDS) > WARN_SYNC_MILLIS_THRESHOLD) {
       LOG.warn("Sync of transaction range " + firstTxnId + "-" + lastTxnId +
-               " took " + milliSeconds + "ms");
+               " took " + sw.elapsedTime(TimeUnit.MILLISECONDS) + "ms");
     }
 
     if (isLagging) {

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestMultiThreadedHflush.java

@@ -32,11 +32,12 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.metrics2.util.Quantile;
 import org.apache.hadoop.metrics2.util.SampleQuantiles;
-import org.apache.hadoop.util.StopWatch;
 import org.apache.hadoop.util.Tool;
 import org.apache.hadoop.util.ToolRunner;
 import org.junit.Test;
 
+import com.google.common.base.Stopwatch;
+
 /**
  * This class tests hflushing concurrently from many threads.
  */
@@ -99,10 +100,10 @@ public class TestMultiThreadedHflush {
     }
 
     private void doAWrite() throws IOException {
-      StopWatch sw = new StopWatch().start();
+      Stopwatch sw = new Stopwatch().start();
       stm.write(toWrite);
       stm.hflush();
-      long micros = sw.now(TimeUnit.MICROSECONDS);
+      long micros = sw.elapsedTime(TimeUnit.MICROSECONDS);
       quantiles.insert(micros);
     }
   }
@@ -275,12 +276,12 @@ public class TestMultiThreadedHflush {
       int replication = conf.getInt(DFSConfigKeys.DFS_REPLICATION_KEY,
           DFSConfigKeys.DFS_REPLICATION_DEFAULT);
       
-      StopWatch sw = new StopWatch().start();
+      Stopwatch sw = new Stopwatch().start();
       test.doMultithreadedWrites(conf, p, numThreads, writeSize, numWrites,
           replication);
       sw.stop();
   
-      System.out.println("Finished in " + sw.now(TimeUnit.MILLISECONDS) + "ms");
+      System.out.println("Finished in " + sw.elapsedMillis() + "ms");
       System.out.println("Latency quantiles (in microseconds):\n" +
           test.quantiles);
       return 0;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/server/TestJournalNode.java

@@ -27,7 +27,6 @@ import java.io.File;
 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.util.concurrent.ExecutionException;
-import java.util.concurrent.TimeUnit;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileUtil;
@@ -39,6 +38,8 @@ import org.apache.hadoop.hdfs.qjournal.QJMTestUtil;
 import org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel;
 import org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos.NewEpochResponseProto;
 import org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos.PrepareRecoveryResponseProto;
+import org.apache.hadoop.hdfs.qjournal.server.Journal;
+import org.apache.hadoop.hdfs.qjournal.server.JournalNode;
 import org.apache.hadoop.hdfs.server.namenode.NameNodeLayoutVersion;
 import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
 import org.apache.hadoop.metrics2.MetricsRecordBuilder;
@@ -47,12 +48,12 @@ import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.MetricsAsserts;
 import org.apache.hadoop.test.PathUtils;
 import org.apache.hadoop.util.Shell;
-import org.apache.hadoop.util.StopWatch;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 
 import com.google.common.base.Charsets;
+import com.google.common.base.Stopwatch;
 import com.google.common.primitives.Bytes;
 import com.google.common.primitives.Ints;
 
@@ -319,11 +320,11 @@ public class TestJournalNode {
     ch.setEpoch(1);
     ch.startLogSegment(1, NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION).get();
     
-    StopWatch sw = new StopWatch().start();
+    Stopwatch sw = new Stopwatch().start();
     for (int i = 1; i < numEdits; i++) {
       ch.sendEdits(1L, i, 1, data).get();
     }
-    long time = sw.now(TimeUnit.MILLISECONDS);
+    long time = sw.elapsedMillis();
     
     System.err.println("Wrote " + numEdits + " batches of " + editsSize +
         " bytes in " + time + "ms");

hadoop-mapreduce-project/CHANGES.txt

@@ -92,9 +92,6 @@ Trunk (Unreleased)
     MAPREDUCE-6013. [post-HADOOP-9902] mapred version is missing (Akira AJISAKA
     via aw)
 
-    HADOOP-11032. Replace use of Guava's Stopwatch with Hadoop's StopWatch
-    (ozawa)
-
   BUG FIXES
 
     MAPREDUCE-6191. Improve clearing stale state of Java serialization

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileInputFormat.java

@@ -28,7 +28,6 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import java.util.concurrent.TimeUnit;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -46,9 +45,9 @@ import org.apache.hadoop.net.NetworkTopology;
 import org.apache.hadoop.net.Node;
 import org.apache.hadoop.net.NodeBase;
 import org.apache.hadoop.util.ReflectionUtils;
-import org.apache.hadoop.util.StopWatch;
 import org.apache.hadoop.util.StringUtils;
 
+import com.google.common.base.Stopwatch;
 import com.google.common.collect.Iterables;
 
 /** 
@@ -224,7 +223,7 @@ public abstract class FileInputFormat<K, V> implements InputFormat<K, V> {
             org.apache.hadoop.mapreduce.lib.input.FileInputFormat.LIST_STATUS_NUM_THREADS,
             org.apache.hadoop.mapreduce.lib.input.FileInputFormat.DEFAULT_LIST_STATUS_NUM_THREADS);
     
-    StopWatch sw = new StopWatch().start();
+    Stopwatch sw = new Stopwatch().start();
     if (numThreads == 1) {
       List<FileStatus> locatedFiles = singleThreadedListStatus(job, dirs, inputFilter, recursive); 
       result = locatedFiles.toArray(new FileStatus[locatedFiles.size()]);
@@ -243,8 +242,7 @@ public abstract class FileInputFormat<K, V> implements InputFormat<K, V> {
 
     sw.stop();
     if (LOG.isDebugEnabled()) {
-      LOG.debug("Time taken to get FileStatuses: "
-          + sw.now(TimeUnit.MILLISECONDS));
+      LOG.debug("Time taken to get FileStatuses: " + sw.elapsedMillis());
     }
     LOG.info("Total input paths to process : " + result.length);
     return result;
@@ -311,7 +309,7 @@ public abstract class FileInputFormat<K, V> implements InputFormat<K, V> {
    * they're too big.*/ 
   public InputSplit[] getSplits(JobConf job, int numSplits)
     throws IOException {
-    StopWatch sw = new StopWatch().start();
+    Stopwatch sw = new Stopwatch().start();
     FileStatus[] files = listStatus(job);
     
     // Save the number of input files for metrics/loadgen
@@ -373,7 +371,7 @@ public abstract class FileInputFormat<K, V> implements InputFormat<K, V> {
     sw.stop();
     if (LOG.isDebugEnabled()) {
       LOG.debug("Total # of splits generated by getSplits: " + splits.size()
-          + ", TimeTaken: " + sw.now(TimeUnit.MILLISECONDS));
+          + ", TimeTaken: " + sw.elapsedMillis());
     }
     return splits.toArray(new FileSplit[splits.size()]);
   }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/FileInputFormat.java

@@ -22,7 +22,6 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
-import java.util.concurrent.TimeUnit;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
@@ -44,9 +43,9 @@ import org.apache.hadoop.mapreduce.JobContext;
 import org.apache.hadoop.mapreduce.Mapper;
 import org.apache.hadoop.mapreduce.security.TokenCache;
 import org.apache.hadoop.util.ReflectionUtils;
-import org.apache.hadoop.util.StopWatch;
 import org.apache.hadoop.util.StringUtils;
 
+import com.google.common.base.Stopwatch;
 import com.google.common.collect.Lists;
 
 /** 
@@ -260,7 +259,7 @@ public abstract class FileInputFormat<K, V> extends InputFormat<K, V> {
 
     int numThreads = job.getConfiguration().getInt(LIST_STATUS_NUM_THREADS,
         DEFAULT_LIST_STATUS_NUM_THREADS);
-    StopWatch sw = new StopWatch().start();
+    Stopwatch sw = new Stopwatch().start();
     if (numThreads == 1) {
       result = singleThreadedListStatus(job, dirs, inputFilter, recursive);
     } else {
@@ -277,8 +276,7 @@ public abstract class FileInputFormat<K, V> extends InputFormat<K, V> {
     
     sw.stop();
     if (LOG.isDebugEnabled()) {
-      LOG.debug("Time taken to get FileStatuses: "
-          + sw.now(TimeUnit.MILLISECONDS));
+      LOG.debug("Time taken to get FileStatuses: " + sw.elapsedMillis());
     }
     LOG.info("Total input paths to process : " + result.size()); 
     return result;
@@ -378,7 +376,7 @@ public abstract class FileInputFormat<K, V> extends InputFormat<K, V> {
    * @throws IOException
    */
   public List<InputSplit> getSplits(JobContext job) throws IOException {
-    StopWatch sw = new StopWatch().start();
+    Stopwatch sw = new Stopwatch().start();
     long minSize = Math.max(getFormatMinSplitSize(), getMinSplitSize(job));
     long maxSize = getMaxSplitSize(job);
 
@@ -429,7 +427,7 @@ public abstract class FileInputFormat<K, V> extends InputFormat<K, V> {
     sw.stop();
     if (LOG.isDebugEnabled()) {
       LOG.debug("Total # of splits generated by getSplits: " + splits.size()
-          + ", TimeTaken: " + sw.now(TimeUnit.MILLISECONDS));
+          + ", TimeTaken: " + sw.elapsedMillis());
     }
     return splits;
   }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask/src/test/java/org/apache/hadoop/mapred/nativetask/kvtest/KVJob.java

@@ -18,9 +18,9 @@
 package org.apache.hadoop.mapred.nativetask.kvtest;
 
 import java.io.IOException;
-import java.util.concurrent.TimeUnit;
 import java.util.zip.CRC32;
 
+import com.google.common.base.Stopwatch;
 import com.google.common.primitives.Longs;
 
 import org.apache.commons.logging.Log;
@@ -36,7 +36,6 @@ import org.apache.hadoop.mapreduce.Reducer;
 import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
 import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
-import org.apache.hadoop.util.StopWatch;
 
 public class KVJob {
   public static final String INPUTPATH = "nativetask.kvtest.inputfile.path";
@@ -94,10 +93,9 @@ public class KVJob {
       final TestInputFile testfile = new TestInputFile(Integer.valueOf(conf.get(
           TestConstants.FILESIZE_KEY, "1000")),
           keyclass.getName(), valueclass.getName(), conf);
-      StopWatch sw = new StopWatch().start();
+      Stopwatch sw = new Stopwatch().start();
       testfile.createSequenceTestFile(inputpath);
-      LOG.info("Created test file " + inputpath + " in "
-          + sw.now(TimeUnit.MILLISECONDS) + "ms");
+      LOG.info("Created test file " + inputpath + " in " + sw.elapsedMillis() + "ms");
     }
     job.setInputFormatClass(SequenceFileInputFormat.class);
     FileInputFormat.addInputPath(job, new Path(inputpath));