MAPREDUCE-6520. Migrate MR Client test cases part 1.

(cherry picked from commit ef68b44195)

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/conf/TestNoDefaultsJobConf.java

@@ -17,17 +17,30 @@
  */
 package org.apache.hadoop.conf;
 
-import org.junit.Assert;
-
-import org.apache.hadoop.mapred.*;
-import org.apache.hadoop.mapreduce.MRConfig;
-import org.apache.hadoop.mapreduce.server.jobtracker.JTConfig;
-import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.FileUtil;
+import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
+import org.apache.hadoop.mapred.FileInputFormat;
+import org.apache.hadoop.mapred.FileOutputFormat;
+import org.apache.hadoop.mapred.HadoopTestCase;
+import org.apache.hadoop.mapred.JobClient;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.TextInputFormat;
+import org.apache.hadoop.mapred.TextOutputFormat;
+import org.apache.hadoop.mapred.Utils;
+import org.junit.Test;
 
-import java.io.*;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 /**
  * This testcase tests that a JobConf without default values submits jobs
@@ -40,6 +53,7 @@ public class TestNoDefaultsJobConf extends HadoopTestCase {
     super(HadoopTestCase.CLUSTER_MR, HadoopTestCase.DFS_FS, 1, 1);
   }
 
+  @Test
   public void testNoDefaults() throws Exception {
     JobConf configuration = new JobConf();
     assertTrue(configuration.get("hadoop.tmp.dir", null) != null);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/HadoopTestCase.java

@@ -18,13 +18,12 @@
 
 package org.apache.hadoop.mapred;
 
-import junit.framework.TestCase;
-import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.apache.hadoop.mapreduce.MRConfig;
+import org.junit.After;
+import org.junit.Before;
 
-import java.io.File;
 import java.io.IOException;
 
 /**
@@ -38,7 +37,7 @@ import java.io.IOException;
  * Job Configurations should be created using a configuration returned by the
  * 'createJobConf()' method.
  */
-public abstract class HadoopTestCase extends TestCase {
+public abstract class HadoopTestCase {
   public static final int LOCAL_MR = 1;
   public static final int CLUSTER_MR = 2;
   public static final int LOCAL_FS = 4;
@@ -140,8 +139,8 @@ public abstract class HadoopTestCase extends TestCase {
    *
    * @throws Exception
    */
-  protected void setUp() throws Exception {
+  @Before
-    super.setUp();
+  public void setUp() throws Exception {
     if (localFS) {
       fileSystem = FileSystem.getLocal(new JobConf());
     }
@@ -164,7 +163,8 @@ public abstract class HadoopTestCase extends TestCase {
    *
    * @throws Exception
    */
-  protected void tearDown() throws Exception {
+  @After
+  public void tearDown() throws Exception {
     try {
       if (mrCluster != null) {
         mrCluster.shutdown();
@@ -181,7 +181,6 @@ public abstract class HadoopTestCase extends TestCase {
     catch (Exception ex) {
       System.out.println(ex);
     }
-    super.tearDown();
   }
 
   /**

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/NotificationTestCase.java

@@ -34,6 +34,13 @@ import javax.servlet.ServletException;
 import java.io.IOException;
 import java.io.DataOutputStream;
 
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
+import org.junit.Before;
+import org.junit.After;
+import org.junit.Test;
+
+
 /**
  * Base class to test Job end notification in local and cluster mode.
  *
@@ -140,17 +147,19 @@ public abstract class NotificationTestCase extends HadoopTestCase {
     return conf;
   }
 
-
+  @Before
-  protected void setUp() throws Exception {
+  public void setUp() throws Exception {
     super.setUp();
     startHttpServer();
   }
 
-  protected void tearDown() throws Exception {
+  @After
+  public void tearDown() throws Exception {
     stopHttpServer();
     super.tearDown();
   }
 
+  @Test
   public void testMR() throws Exception {
 
     System.out.println(launchWordCount(this.createJobConf(),

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestFileOutputFormat.java

@@ -30,12 +30,16 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.util.Iterator;
 
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+
 public class TestFileOutputFormat extends HadoopTestCase {
 
   public TestFileOutputFormat() throws IOException {
     super(HadoopTestCase.LOCAL_MR, HadoopTestCase.LOCAL_FS, 1, 1);
   }
 
+  @Test
   public void testCustomFile() throws Exception {
     Path inDir = new Path("testing/fileoutputformat/input");
     Path outDir = new Path("testing/fileoutputformat/output");

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestTaskCommit.java

@@ -17,9 +17,6 @@
  */
 package org.apache.hadoop.mapred;
 
-import java.io.File;
-import java.io.IOException;
-
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.fs.Path;
@@ -27,6 +24,16 @@ import org.apache.hadoop.io.Text;
 import org.apache.hadoop.ipc.ProtocolSignature;
 import org.apache.hadoop.mapred.SortedRanges.Range;
 import org.apache.hadoop.mapreduce.TaskType;
+import org.junit.After;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.IOException;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 public class TestTaskCommit extends HadoopTestCase {
   Path rootDir = 
@@ -76,12 +83,13 @@ public class TestTaskCommit extends HadoopTestCase {
     super(LOCAL_MR, LOCAL_FS, 1, 1);
   }
   
-  @Override
+  @After
   public void tearDown() throws Exception {
     super.tearDown();
     FileUtil.fullyDelete(new File(rootDir.toString()));
   }
 
+  @Test
   public void testCommitFail() throws IOException {
     final Path inDir = new Path(rootDir, "./input");
     final Path outDir = new Path(rootDir, "./output");
@@ -182,6 +190,7 @@ public class TestTaskCommit extends HadoopTestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testTaskCleanupDoesNotCommit() throws Exception {
     // Mimic a job with a special committer that does not cleanup
     // files when a task fails.
@@ -228,16 +237,19 @@ public class TestTaskCommit extends HadoopTestCase {
     assertTrue("Task did not succeed", umbilical.taskDone);
   }
 
+  @Test
   public void testCommitRequiredForMapTask() throws Exception {
     Task testTask = createDummyTask(TaskType.MAP);
     assertTrue("MapTask should need commit", testTask.isCommitRequired());
   }
 
+  @Test
   public void testCommitRequiredForReduceTask() throws Exception {
     Task testTask = createDummyTask(TaskType.REDUCE);
     assertTrue("ReduceTask should need commit", testTask.isCommitRequired());
   }
 
+  @Test
   public void testCommitNotRequiredForJobSetup() throws Exception {
     Task testTask = createDummyTask(TaskType.MAP);
     testTask.setJobSetupTask();
@@ -245,6 +257,7 @@ public class TestTaskCommit extends HadoopTestCase {
         testTask.isCommitRequired());
   }
 
+  @Test
   public void testCommitNotRequiredForJobCleanup() throws Exception {
     Task testTask = createDummyTask(TaskType.MAP);
     testTask.setJobCleanupTask();
@@ -252,6 +265,7 @@ public class TestTaskCommit extends HadoopTestCase {
         testTask.isCommitRequired());
   }
 
+  @Test
   public void testCommitNotRequiredForTaskCleanup() throws Exception {
     Task testTask = createDummyTask(TaskType.REDUCE);
     testTask.setTaskCleanupTask();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/jobcontrol/TestLocalJobControl.java

@@ -27,6 +27,8 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.mapred.HadoopTestCase;
 import org.apache.hadoop.mapred.JobConf;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
 /**
  * HadoopTestCase that tests the local job runner.
@@ -59,6 +61,7 @@ public class TestLocalJobControl extends HadoopTestCase {
    * object. Finally, it creates a thread to run the JobControl object and
    * monitors/reports the job states.
    */
+  @Test
   public void testLocalJobControlDataCopy() throws Exception {
 
     FileSystem fs = FileSystem.get(createJobConf());

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/lib/TestChainMapReduce.java

@@ -21,12 +21,29 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
-import org.apache.hadoop.mapred.*;
+import org.apache.hadoop.mapred.FileInputFormat;
+import org.apache.hadoop.mapred.FileOutputFormat;
+import org.apache.hadoop.mapred.HadoopTestCase;
+import org.apache.hadoop.mapred.JobClient;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.Mapper;
+import org.apache.hadoop.mapred.OutputCollector;
+import org.apache.hadoop.mapred.Reducer;
+import org.apache.hadoop.mapred.Reporter;
+import org.apache.hadoop.mapred.RunningJob;
+import org.apache.hadoop.mapred.TextInputFormat;
+import org.apache.hadoop.mapred.TextOutputFormat;
+import org.junit.Test;
 
 import java.io.DataOutputStream;
 import java.io.IOException;
 import java.util.Iterator;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotSame;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
 public class TestChainMapReduce extends HadoopTestCase {
 
   private static Path getFlagDir(boolean local) {
@@ -67,6 +84,7 @@ public class TestChainMapReduce extends HadoopTestCase {
     super(HadoopTestCase.LOCAL_MR, HadoopTestCase.LOCAL_FS, 1, 1);
   }
 
+  @Test
   public void testChain() throws Exception {
     Path inDir = new Path("testing/chain/input");
     Path outDir = new Path("testing/chain/output");

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/lib/TestKeyFieldBasedComparator.java

@@ -36,6 +36,8 @@ import org.apache.hadoop.mapred.TextOutputFormat;
 import org.apache.hadoop.mapred.Utils;
 import org.junit.After;
 import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 import java.io.BufferedReader;
 import java.io.File;

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/lib/TestMultipleInputs.java

@@ -17,11 +17,6 @@
  */
 package org.apache.hadoop.mapred.lib;
 
-import java.io.IOException;
-import java.util.Map;
-
-import junit.framework.TestCase;
-
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.mapred.InputFormat;
 import org.apache.hadoop.mapred.JobConf;
@@ -30,12 +25,19 @@ import org.apache.hadoop.mapred.Mapper;
 import org.apache.hadoop.mapred.OutputCollector;
 import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.mapred.TextInputFormat;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.util.Map;
+
+import static org.junit.Assert.assertEquals;
 
 /**
  * @see TestDelegatingInputFormat
  */
-public class TestMultipleInputs extends TestCase {
+public class TestMultipleInputs {
 
+  @Test
   public void testAddInputPathWithFormat() {
     final JobConf conf = new JobConf();
     MultipleInputs.addInputPath(conf, new Path("/foo"), TextInputFormat.class);
@@ -48,6 +50,7 @@ public class TestMultipleInputs extends TestCase {
        .getClass());
   }
 
+  @Test
   public void testAddInputPathWithMapper() {
     final JobConf conf = new JobConf();
     MultipleInputs.addInputPath(conf, new Path("/foo"), TextInputFormat.class,

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/lib/TestMultipleOutputs.java

@@ -24,7 +24,23 @@ import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.SequenceFile;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.serializer.JavaSerializationComparator;
-import org.apache.hadoop.mapred.*;
+import org.apache.hadoop.mapred.Counters;
+import org.apache.hadoop.mapred.FileInputFormat;
+import org.apache.hadoop.mapred.FileOutputFormat;
+import org.apache.hadoop.mapred.HadoopTestCase;
+import org.apache.hadoop.mapred.JobClient;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.Mapper;
+import org.apache.hadoop.mapred.OutputCollector;
+import org.apache.hadoop.mapred.Reducer;
+import org.apache.hadoop.mapred.Reporter;
+import org.apache.hadoop.mapred.RunningJob;
+import org.apache.hadoop.mapred.SequenceFileOutputFormat;
+import org.apache.hadoop.mapred.TextInputFormat;
+import org.apache.hadoop.mapred.TextOutputFormat;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
 
 import java.io.BufferedReader;
 import java.io.DataOutputStream;
@@ -32,17 +48,23 @@ import java.io.IOException;
 import java.io.InputStreamReader;
 import java.util.Iterator;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 public class TestMultipleOutputs extends HadoopTestCase {
 
   public TestMultipleOutputs() throws IOException {
     super(HadoopTestCase.LOCAL_MR, HadoopTestCase.LOCAL_FS, 1, 1);
   }
 
+  @Test
   public void testWithoutCounters() throws Exception {
     _testMultipleOutputs(false);
     _testMOWithJavaSerialization(false);
   }
 
+  @Test
   public void testWithCounters() throws Exception {
     _testMultipleOutputs(true);
     _testMOWithJavaSerialization(true);
@@ -62,6 +84,7 @@ public class TestMultipleOutputs extends HadoopTestCase {
     return dir;
   }
 
+  @Before
   public void setUp() throws Exception {
     super.setUp();
     Path rootDir = getDir(ROOT_DIR);
@@ -75,6 +98,7 @@ public class TestMultipleOutputs extends HadoopTestCase {
     }
   }
 
+  @After
   public void tearDown() throws Exception {
     Path rootDir = getDir(ROOT_DIR);
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/lib/TestMultithreadedMapRunner.java

@@ -22,26 +22,45 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
-import org.apache.hadoop.mapred.*;
+import org.apache.hadoop.mapred.FileInputFormat;
+import org.apache.hadoop.mapred.FileOutputFormat;
+import org.apache.hadoop.mapred.HadoopTestCase;
+import org.apache.hadoop.mapred.JobClient;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.Mapper;
+import org.apache.hadoop.mapred.OutputCollector;
+import org.apache.hadoop.mapred.Reducer;
+import org.apache.hadoop.mapred.Reporter;
+import org.apache.hadoop.mapred.RunningJob;
+import org.apache.hadoop.mapred.TextInputFormat;
+import org.apache.hadoop.mapred.TextOutputFormat;
 import org.apache.hadoop.mapreduce.lib.map.MultithreadedMapper;
+import org.junit.Test;
 
 import java.io.DataOutputStream;
 import java.io.IOException;
 import java.util.Iterator;
 
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 public class TestMultithreadedMapRunner extends HadoopTestCase {
 
   public TestMultithreadedMapRunner() throws IOException {
     super(HadoopTestCase.LOCAL_MR, HadoopTestCase.LOCAL_FS, 1, 1);
   }
 
+  @Test
   public void testOKRun() throws Exception {
     run(false, false);
   }
 
+  @Test
   public void testIOExRun() throws Exception {
     run(true, false);
   }
+
+  @Test
   public void testRuntimeExRun() throws Exception {
     run(false, true);
   }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/TestChild.java

@@ -30,6 +30,13 @@ import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapred.HadoopTestCase;
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.log4j.Level;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 
 public class TestChild extends HadoopTestCase {
   private static String TEST_ROOT_DIR =
@@ -146,6 +153,7 @@ public class TestChild extends HadoopTestCase {
     return job;
   }
 
+  @Test
   public void testChild() throws Exception {
     try {
       submitAndValidateJob(createJobConf(), 1, 1, true);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/TestNoJobSetupCleanup.java

@@ -30,6 +30,9 @@ import org.apache.hadoop.mapred.HadoopTestCase;
 import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
 import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl;
 import org.junit.Ignore;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+
 @Ignore
 public class TestNoJobSetupCleanup extends HadoopTestCase {
   private static String TEST_ROOT_DIR =
@@ -69,6 +72,7 @@ public class TestNoJobSetupCleanup extends HadoopTestCase {
     return job;
   }
 
+  @Test
   public void testNoJobSetupCleanup() throws Exception {
     try {
       Configuration conf = createJobConf();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/TestTaskContext.java

@@ -33,6 +33,8 @@ import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Ignore;
 import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 /**
  * Tests context api and {@link StatusReporter#getProgress()} via 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/chain/TestChainErrors.java

@@ -29,6 +29,10 @@ import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.Mapper;
 import org.apache.hadoop.mapreduce.Reducer;
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
 
 /**
  * Tests error conditions in ChainMapper/ChainReducer.
@@ -51,6 +55,7 @@ public class TestChainErrors extends HadoopTestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testChainSubmission() throws Exception {
 
     Configuration conf = createJobConf();
@@ -89,6 +94,7 @@ public class TestChainErrors extends HadoopTestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testChainFail() throws Exception {
 
     Configuration conf = createJobConf();
@@ -114,6 +120,7 @@ public class TestChainErrors extends HadoopTestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testReducerFail() throws Exception {
 
     Configuration conf = createJobConf();
@@ -139,6 +146,7 @@ public class TestChainErrors extends HadoopTestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testChainMapNoOuptut() throws Exception {
     Configuration conf = createJobConf();
     String expectedOutput = "";
@@ -163,6 +171,7 @@ public class TestChainErrors extends HadoopTestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testChainReduceNoOuptut() throws Exception {
     Configuration conf = createJobConf();
     String expectedOutput = "";

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/chain/TestMapReduceChain.java

@@ -30,6 +30,11 @@ import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.Mapper;
 import org.apache.hadoop.mapreduce.Reducer;
+import org.junit.Test;
+
+import static org.junit.Assert.fail;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 public class TestMapReduceChain extends HadoopTestCase {
 
@@ -63,6 +68,7 @@ public class TestMapReduceChain extends HadoopTestCase {
     super(HadoopTestCase.LOCAL_MR, HadoopTestCase.LOCAL_FS, 1, 1);
   }
 
+  @Test
   public void testChain() throws Exception {
     Path inDir = new Path(localPathRoot, "testing/chain/input");
     Path outDir = new Path(localPathRoot, "testing/chain/output");

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/chain/TestSingleElementChain.java

@@ -26,6 +26,9 @@ import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.lib.map.TokenCounterMapper;
 import org.apache.hadoop.mapreduce.lib.reduce.IntSumReducer;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 import java.io.IOException;
 
@@ -42,6 +45,7 @@ public class TestSingleElementChain extends HadoopTestCase {
   }
 
   // test chain mapper and reducer by adding single mapper and reducer to chain
+  @Test
   public void testNoChain() throws Exception {
     Path inDir = new Path(localPathRoot, "testing/chain/input");
     Path outDir = new Path(localPathRoot, "testing/chain/output");

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/db/TestDataDrivenDBInputFormat.java

@@ -18,25 +18,40 @@
 
 package org.apache.hadoop.mapreduce.lib.db;
 
-import java.sql.*;
-import java.io.DataInput;
-import java.io.DataOutput;
-import java.io.IOException;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-//import org.apache.hadoop.examples.DBCountPageView;
-import org.apache.hadoop.fs.*;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.NullWritable;
 import org.apache.hadoop.io.WritableComparable;
 import org.apache.hadoop.mapred.HadoopTestCase;
-import org.apache.hadoop.mapreduce.*;
+import org.apache.hadoop.mapreduce.Job;
-import org.apache.hadoop.mapreduce.lib.db.*;
+import org.apache.hadoop.mapreduce.Mapper;
-import org.apache.hadoop.mapreduce.lib.input.*;
+import org.apache.hadoop.mapreduce.Reducer;
-import org.apache.hadoop.mapreduce.lib.output.*;
+import org.apache.hadoop.mapreduce.TaskCounter;
+import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
 import org.apache.hadoop.util.StringUtils;
 import org.hsqldb.server.Server;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.Date;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+//import org.apache.hadoop.examples.DBCountPageView;
 
 /**
  * Test aspects of DataDrivenDBInputFormat
@@ -109,11 +124,13 @@ public class TestDataDrivenDBInputFormat extends HadoopTestCase {
     createConnection(driverClassName, url);
   }
 
+  @Before
   public void setUp() throws Exception {
     initialize(DRIVER_CLASS, DB_URL);
     super.setUp();
   }
 
+  @After
   public void tearDown() throws Exception {
     super.tearDown();
     shutdown();
@@ -170,6 +187,7 @@ public class TestDataDrivenDBInputFormat extends HadoopTestCase {
     }
   }
 
+  @Test
   public void testDateSplits() throws Exception {
     Statement s = connection.createStatement();
     final String DATE_TABLE = "datetable";

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestMultipleInputs.java

@@ -38,6 +38,8 @@ import org.apache.hadoop.mapreduce.Mapper;
 import org.apache.hadoop.mapreduce.Reducer;
 import org.junit.Before;
 import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 /**
  * @see TestDelegatingInputFormat
@@ -139,7 +141,7 @@ public class TestMultipleInputs extends HadoopTestCase {
     assertTrue(output.readLine().equals("e 2"));
   }
 
-  @SuppressWarnings("unchecked")
+  @Test
   public void testAddInputPathWithFormat() throws IOException {
     final Job conf = Job.getInstance();
     MultipleInputs.addInputPath(conf, new Path("/foo"), TextInputFormat.class);
@@ -152,7 +154,7 @@ public class TestMultipleInputs extends HadoopTestCase {
        .getClass());
   }
 
-  @SuppressWarnings("unchecked")
+  @Test
   public void testAddInputPathWithMapper() throws IOException {
     final Job conf = Job.getInstance();
     MultipleInputs.addInputPath(conf, new Path("/foo"), TextInputFormat.class,

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/jobcontrol/TestMapReduceJobControl.java

@@ -33,6 +33,9 @@ import org.apache.hadoop.mapred.HadoopTestCase;
 import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 
 /**
  * This class performs unit test for Job/JobControl classes.
@@ -121,6 +124,7 @@ public class TestMapReduceJobControl extends HadoopTestCase {
     }
   }
 
+  @Test
   public void testJobControlWithFailJob() throws Exception {
     LOG.info("Starting testJobControlWithFailJob");
     Configuration conf = createJobConf();
@@ -144,6 +148,7 @@ public class TestMapReduceJobControl extends HadoopTestCase {
     theControl.stop();
   }
 
+  @Test
   public void testJobControlWithKillJob() throws Exception {
     LOG.info("Starting testJobControlWithKillJob");
 
@@ -182,6 +187,7 @@ public class TestMapReduceJobControl extends HadoopTestCase {
     theControl.stop();
   }
 
+  @Test
   public void testJobControl() throws Exception {
     LOG.info("Starting testJobControl");
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/map/TestMultithreadedMapper.java

@@ -23,23 +23,33 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapred.HadoopTestCase;
-import org.apache.hadoop.mapreduce.*;
+import org.apache.hadoop.mapreduce.Job;
+import org.apache.hadoop.mapreduce.MapReduceTestUtil;
+import org.apache.hadoop.mapreduce.Mapper;
+import org.apache.hadoop.mapreduce.Reducer;
+import org.junit.Test;
 
 import java.io.IOException;
 
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 public class TestMultithreadedMapper extends HadoopTestCase {
 
   public TestMultithreadedMapper() throws IOException {
     super(HadoopTestCase.LOCAL_MR, HadoopTestCase.LOCAL_FS, 1, 1);
   }
 
+  @Test
   public void testOKRun() throws Exception {
     run(false, false);
   }
 
+  @Test
   public void testIOExRun() throws Exception {
     run(true, false);
   }
+  @Test
   public void testRuntimeExRun() throws Exception {
     run(false, true);
   }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/output/TestJobOutputCommitter.java

@@ -33,6 +33,11 @@ import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.OutputCommitter;
 import org.apache.hadoop.mapreduce.OutputFormat;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
 
 /**
  * A JUnit test to test Map-Reduce job committer.
@@ -54,15 +59,15 @@ public class TestJobOutputCommitter extends HadoopTestCase {
   private FileSystem fs;
   private Configuration conf = null;
 
-  @Override
+  @Before
-  protected void setUp() throws Exception {
+  public void setUp() throws Exception {
     super.setUp();
     conf = createJobConf();
     fs = getFileSystem();
   }
 
-  @Override
+  @After
-  protected void tearDown() throws Exception {
+  public void tearDown() throws Exception {
     fs.delete(new Path(TEST_ROOT_DIR), true);
     super.tearDown();
   }
@@ -219,6 +224,7 @@ public class TestJobOutputCommitter extends HadoopTestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testDefaultCleanupAndAbort() throws Exception {
     // check with a successful job
     testSuccessfulJob(FileOutputCommitter.SUCCEEDED_FILE_NAME,
@@ -238,6 +244,7 @@ public class TestJobOutputCommitter extends HadoopTestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testCustomAbort() throws Exception {
     // check with a successful job
     testSuccessfulJob(FileOutputCommitter.SUCCEEDED_FILE_NAME,
@@ -264,6 +271,7 @@ public class TestJobOutputCommitter extends HadoopTestCase {
    * compatibility testing.
    * @throws Exception 
    */
+  @Test
   public void testCustomCleanup() throws Exception {
     // check with a successful job
     testSuccessfulJob(CUSTOM_CLEANUP_FILE_NAME, 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/output/TestMRMultipleOutputs.java

@@ -27,23 +27,36 @@ import org.apache.hadoop.io.SequenceFile;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.serializer.JavaSerializationComparator;
 import org.apache.hadoop.mapred.HadoopTestCase;
-import org.apache.hadoop.mapreduce.*;
+import org.apache.hadoop.mapreduce.CounterGroup;
+import org.apache.hadoop.mapreduce.Job;
+import org.apache.hadoop.mapreduce.MapReduceTestUtil;
+import org.apache.hadoop.mapreduce.Mapper;
+import org.apache.hadoop.mapreduce.Reducer;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
 
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 public class TestMRMultipleOutputs extends HadoopTestCase {
 
   public TestMRMultipleOutputs() throws IOException {
     super(HadoopTestCase.LOCAL_MR, HadoopTestCase.LOCAL_FS, 1, 1);
   }
 
+  @Test
   public void testWithoutCounters() throws Exception {
     _testMultipleOutputs(false);
     _testMOWithJavaSerialization(false);
   }
 
+  @Test
   public void testWithCounters() throws Exception {
     _testMultipleOutputs(true);
     _testMOWithJavaSerialization(true);
@@ -57,6 +70,7 @@ public class TestMRMultipleOutputs extends HadoopTestCase {
   private static String TEXT = "text";
   private static String SEQUENCE = "sequence";
 
+  @Before
   public void setUp() throws Exception {
     super.setUp();
     Configuration conf = createJobConf();
@@ -64,6 +78,7 @@ public class TestMRMultipleOutputs extends HadoopTestCase {
     fs.delete(ROOT_DIR, true);
   }
 
+  @After
   public void tearDown() throws Exception {
     Configuration conf = createJobConf();
     FileSystem fs = FileSystem.get(conf);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/partition/TestMRKeyFieldBasedComparator.java

@@ -18,8 +18,6 @@
 
 package org.apache.hadoop.mapreduce.lib.partition;
 
-import java.io.*;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.fs.Path;
@@ -32,6 +30,15 @@ import org.apache.hadoop.mapreduce.MRJobConfig;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.Reducer;
 import org.apache.hadoop.mapreduce.lib.map.InverseMapper;
+import org.junit.Test;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 
 public class TestMRKeyFieldBasedComparator extends HadoopTestCase {
@@ -94,6 +101,7 @@ public class TestMRKeyFieldBasedComparator extends HadoopTestCase {
     }
   }
 
+  @Test
   public void testBasicUnixComparator() throws Exception {
     testComparator("-k1,1n", 1);
     testComparator("-k2,2n", 1);
@@ -117,7 +125,7 @@ public class TestMRKeyFieldBasedComparator extends HadoopTestCase {
   byte[] line1_bytes = line1.getBytes();
   byte[] line2_bytes = line2.getBytes();
 
-  public void testWithoutMRJob(String keySpec, int expect) throws Exception {
+  private void testWithoutMRJob(String keySpec, int expect) throws Exception {
     KeyFieldBasedComparator<Void, Void> keyFieldCmp = 
       new KeyFieldBasedComparator<Void, Void>();
     conf.set("mapreduce.partition.keycomparator.options", keySpec);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/test/java/org/apache/hadoop/examples/terasort/TestTeraSort.java

@@ -27,6 +27,12 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.mapred.FileAlreadyExistsException;
 import org.apache.hadoop.mapred.HadoopTestCase;
 import org.apache.hadoop.util.ToolRunner;
+import org.junit.After;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
+
 public class TestTeraSort extends HadoopTestCase {
   private static Log LOG = LogFactory.getLog(TestTeraSort.class);
   
@@ -35,7 +41,8 @@ public class TestTeraSort extends HadoopTestCase {
     super(LOCAL_MR, LOCAL_FS, 1, 1);
   }
 
-  protected void tearDown() throws Exception {
+  @After
+  public void tearDown() throws Exception {
     getFileSystem().delete(new Path(TEST_DIR), true);
     super.tearDown();
   }
@@ -76,6 +83,7 @@ public class TestTeraSort extends HadoopTestCase {
     assertEquals(ToolRunner.run(job, new TeraValidate(), svArgs), 0);
   }
 
+  @Test
   public void testTeraSort() throws Exception {
     // Run TeraGen to generate input for 'terasort'
     runTeraGen(createJobConf(), SORT_INPUT_PATH);
@@ -104,6 +112,7 @@ public class TestTeraSort extends HadoopTestCase {
       TERA_OUTPUT_PATH);
   }
 
+  @Test
   public void testTeraSortWithLessThanTwoArgs() throws Exception {
     String[] args = new String[1];
     assertEquals(new TeraSort().run(args), 2);