MAPREDUCE-6543. Migrate MR client test cases part 2. Contributed by Dustin Cote.

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

@@ -28,8 +28,6 @@ import java.io.PrintStream;
 import java.util.Date;
 import java.util.StringTokenizer;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -39,8 +37,9 @@ import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.SequenceFile.CompressionType;
 import org.apache.hadoop.mapred.*;
 import org.junit.Ignore;
+import org.junit.Test;
 
-/**
+ /**
  * Distributed i/o benchmark.
  * <p>
  * This test writes into or reads from a specified number of files.
@@ -68,7 +67,7 @@ import org.junit.Ignore;
  * </ul>
  */
 @Ignore
-public class DFSCIOTest extends TestCase {
+public class DFSCIOTest {
   // Constants
   private static final Log LOG = LogFactory.getLog(DFSCIOTest.class);
   private static final int TEST_TYPE_READ = 0;
@@ -98,6 +97,7 @@ public class DFSCIOTest extends TestCase {
    * 
    * @throws Exception
    */
+  @Test
   public void testIOs() throws Exception {
     testIOs(10, 10);
   }

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

@@ -34,8 +34,6 @@ import java.util.HashMap;
 import java.net.InetSocketAddress;
 import java.net.URI;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.conf.Configured;
@@ -50,8 +48,15 @@ import org.apache.hadoop.mapred.*;
 import org.apache.hadoop.mapred.lib.LongSumReducer;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.util.StringUtils;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotSame;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.fail;
 
-public class TestFileSystem extends TestCase {
+
+public class TestFileSystem {
   private static final Log LOG = FileSystem.LOG;
 
   private static Configuration conf = new Configuration();
@@ -66,6 +71,7 @@ public class TestFileSystem extends TestCase {
   private static Path READ_DIR = new Path(ROOT, "fs_read");
   private static Path DATA_DIR = new Path(ROOT, "fs_data");
 
+  @Test
   public void testFs() throws Exception {
     testFs(10 * MEGA, 100, 0);
   }
@@ -90,6 +96,7 @@ public class TestFileSystem extends TestCase {
     fs.delete(READ_DIR, true);
   }
 
+  @Test
   public static void testCommandFormat() throws Exception {
     // This should go to TestFsShell.java when it is added.
     CommandFormat cf;
@@ -488,6 +495,7 @@ public class TestFileSystem extends TestCase {
     }
   }
 
+  @Test
   public void testFsCache() throws Exception {
     {
       long now = System.currentTimeMillis();
@@ -561,6 +569,7 @@ public class TestFileSystem extends TestCase {
         + StringUtils.toUpperCase(add.getHostName()) + ":" + add.getPort()));
   }
 
+  @Test
   public void testFsClose() throws Exception {
     {
       Configuration conf = new Configuration();
@@ -569,6 +578,7 @@ public class TestFileSystem extends TestCase {
     }
   }
 
+  @Test
   public void testFsShutdownHook() throws Exception {
     final Set<FileSystem> closed = Collections.synchronizedSet(new HashSet<FileSystem>());
     Configuration conf = new Configuration();
@@ -600,7 +610,7 @@ public class TestFileSystem extends TestCase {
     assertTrue(closed.contains(fsWithoutAuto));
   }
 
-
+  @Test
   public void testCacheKeysAreCaseInsensitive()
     throws Exception
   {

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

@@ -23,19 +23,18 @@ import java.io.FileOutputStream;
 import java.io.OutputStreamWriter;
 import java.io.File;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Test;
 
 /**
  * Test Job History Log Analyzer.
  *
  * @see JHLogAnalyzer
  */
-public class TestJHLA extends TestCase {
+public class TestJHLA {
   private static final Log LOG = LogFactory.getLog(JHLogAnalyzer.class);
   private String historyLog = System.getProperty("test.build.data", 
                                   "build/test/data") + "/history/test.log";
@@ -133,6 +132,7 @@ public class TestJHLA extends TestCase {
   /**
    * Run log analyzer in test mode for file test.log.
    */
+  @Test
   public void testJHLA() {
     String[] args = {"-test", historyLog, "-jobDelimiter", ".!!FILE=.*!!"};
     JHLogAnalyzer.main(args);

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

@@ -32,21 +32,25 @@ import org.apache.hadoop.io.compress.CompressionCodec;
 import org.apache.hadoop.io.compress.DefaultCodec;
 import org.apache.hadoop.mapred.*;
 
-import junit.framework.TestCase;
 import org.apache.commons.logging.*;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
-public class TestSequenceFileMergeProgress extends TestCase {
+public class TestSequenceFileMergeProgress {
   private static final Log LOG = FileInputFormat.LOG;
   private static final int RECORDS = 10000;
 
+  @Test
   public void testMergeProgressWithNoCompression() throws IOException {
     runTest(SequenceFile.CompressionType.NONE);
   }
 
+  @Test
   public void testMergeProgressWithRecordCompression() throws IOException {
     runTest(SequenceFile.CompressionType.RECORD);
   }
 
+  @Test
   public void testMergeProgressWithBlockCompression() throws IOException {
     runTest(SequenceFile.CompressionType.BLOCK);
   }
@@ -92,7 +96,7 @@ public class TestSequenceFileMergeProgress extends TestCase {
       count++;
     }
     assertEquals(RECORDS, count);
-    assertEquals(1.0f, rIter.getProgress().get());
+    assertEquals(1.0f, rIter.getProgress().get(), 0.0000);
   }
 
 }

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

@@ -17,10 +17,11 @@
  */
 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.junit.After;
+import org.junit.Before;
 
 import java.io.IOException;
 import java.util.Map;
@@ -41,7 +42,7 @@ import java.util.Properties;
  * <p/>
  * The DFS filesystem is formated before the testcase starts and after it ends.
  */
-public abstract class ClusterMapReduceTestCase extends TestCase {
+public abstract class ClusterMapReduceTestCase {
   private MiniDFSCluster dfsCluster = null;
   private MiniMRCluster mrCluster = null;
 
@@ -50,9 +51,8 @@ public abstract class ClusterMapReduceTestCase extends TestCase {
    *
    * @throws Exception
    */
-  protected void setUp() throws Exception {
+  @Before
-    super.setUp();
+  public void setUp() throws Exception {
-
     startCluster(true, null);
   }
 
@@ -139,9 +139,9 @@ public abstract class ClusterMapReduceTestCase extends TestCase {
    *
    * @throws Exception
    */
-  protected void tearDown() throws Exception {
+  @After
+  public void tearDown() throws Exception {
     stopCluster();
-    super.tearDown();
   }
 
   /**

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

@@ -28,13 +28,13 @@ import org.apache.hadoop.ipc.TestRPC.TestImpl;
 import org.apache.hadoop.ipc.TestRPC.TestProtocol;
 import org.apache.hadoop.mapred.AuditLogger.Keys;
 import org.apache.hadoop.net.NetUtils;
-
+import org.junit.Test;
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
 
 /**
  * Tests {@link AuditLogger}.
  */
-public class TestAuditLogger extends TestCase {
+public class TestAuditLogger {
   private static final String USER = "test";
   private static final String OPERATION = "oper";
   private static final String TARGET = "tgt";
@@ -44,6 +44,7 @@ public class TestAuditLogger extends TestCase {
   /**
    * Test the AuditLog format with key-val pair.
    */
+  @Test
   public void testKeyValLogFormat() {
     StringBuilder actLog = new StringBuilder();
     StringBuilder expLog = new StringBuilder();
@@ -114,6 +115,7 @@ public class TestAuditLogger extends TestCase {
   /**
    * Test {@link AuditLogger} without IP set.
    */
+  @Test
   public void testAuditLoggerWithoutIP() throws Exception {
     // test without ip
     testSuccessLogFormat(false);
@@ -137,6 +139,7 @@ public class TestAuditLogger extends TestCase {
   /**
    * Test {@link AuditLogger} with IP set.
    */
+  @Test
   public void testAuditLoggerWithIP() throws Exception {
     Configuration conf = new Configuration();
     // start the IPC server

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

@@ -40,6 +40,11 @@ import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.TaskCounter;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.junit.Ignore;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertNotNull;
 @Ignore
 public class TestBadRecords extends ClusterMapReduceTestCase {
   
@@ -207,6 +212,7 @@ public class TestBadRecords extends ClusterMapReduceTestCase {
     return processed;
   }
 
+  @Test
   public void testBadMapRed() throws Exception {
     JobConf conf = createJobConf();
     conf.setMapperClass(BadMapper.class);

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

@@ -29,6 +29,12 @@ 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.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertFalse;
 public class TestClusterMapReduceTestCase extends ClusterMapReduceTestCase {
   public void _testMapReduce(boolean restart) throws Exception {
     OutputStream os = getFileSystem().create(new Path(getInputDir(), "text.txt"));
@@ -85,14 +91,17 @@ public class TestClusterMapReduceTestCase extends ClusterMapReduceTestCase {
 
   }
 
+  @Test
   public void testMapReduce() throws Exception {
     _testMapReduce(false);
   }
 
+  @Test
   public void testMapReduceRestarting() throws Exception {
     _testMapReduce(true);
   }
 
+  @Test
   public void testDFSRestart() throws Exception {
     Path file = new Path(getInputDir(), "text.txt");
     OutputStream os = getFileSystem().create(file);
@@ -109,6 +118,7 @@ public class TestClusterMapReduceTestCase extends ClusterMapReduceTestCase {
     
   }
 
+  @Test
   public void testMRConfig() throws Exception {
     JobConf conf = createJobConf();
     assertNull(conf.get("xyz"));

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

@@ -21,15 +21,15 @@ import org.apache.hadoop.fs.*;
 import org.apache.hadoop.io.*;
 import org.apache.hadoop.mapred.UtilsForTests.RandomInputFormat;
 import org.apache.hadoop.mapreduce.MRConfig;
+import org.junit.Test;
 
-import junit.framework.TestCase;
 import java.io.*;
 import java.util.*;
 
 /** 
  * TestCollect checks if the collect can handle simultaneous invocations.
  */
-public class TestCollect extends TestCase 
+public class TestCollect
 {
   final static Path OUTPUT_DIR = new Path("build/test/test.collect.output");
   static final int NUM_FEEDERS = 10;
@@ -127,7 +127,7 @@ public class TestCollect extends TestCase
     conf.setNumMapTasks(1);
     conf.setNumReduceTasks(1);
   }
-  
+  @Test
   public void testCollect() throws IOException {
     JobConf conf = new JobConf();
     configure(conf);
@@ -144,9 +144,5 @@ public class TestCollect extends TestCase
       fs.delete(OUTPUT_DIR, true);
     }
   }
-  
-  public static void main(String[] args) throws IOException {
-    new TestCollect().testCollect();
-  }
 }
 

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

@@ -21,21 +21,21 @@ import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.*;
 import org.apache.hadoop.util.StringUtils;
 import org.apache.hadoop.util.ToolRunner;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.junit.Ignore;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
 
 /**
  * check for the job submission  options of 
  * -libjars -files -archives
  */
 @Ignore
-public class TestCommandLineJobSubmission extends TestCase {
+public class TestCommandLineJobSubmission {
   // Input output paths for this..
   // these are all dummy and does not test
   // much in map reduce except for the command line
@@ -43,6 +43,7 @@ public class TestCommandLineJobSubmission extends TestCase {
   static final Path input = new Path("/test/input/");
   static final Path output = new Path("/test/output");
   File buildDir = new File(System.getProperty("test.build.data", "/tmp"));
+  @Test
   public void testJobShell() throws Exception {
     MiniDFSCluster dfs = null;
     MiniMRCluster mr = null;

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

@@ -23,11 +23,12 @@ import org.apache.hadoop.mapred.lib.*;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.lib.fieldsel.FieldSelectionHelper;
 import org.apache.hadoop.mapreduce.lib.fieldsel.TestMRFieldSelection;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
-import junit.framework.TestCase;
 import java.text.NumberFormat;
 
-public class TestFieldSelection extends TestCase {
+public class TestFieldSelection {
 
 private static NumberFormat idFormat = NumberFormat.getInstance();
   static {
@@ -35,6 +36,7 @@ private static NumberFormat idFormat = NumberFormat.getInstance();
     idFormat.setGroupingUsed(false);
   }
 
+  @Test
   public void testFieldSelection() throws Exception {
     launch();
   }

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

@@ -17,12 +17,14 @@
  */
 package org.apache.hadoop.mapred;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.PathFilter;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
 import java.io.IOException;
 import java.io.Writer;
@@ -30,7 +32,7 @@ import java.io.OutputStreamWriter;
 import java.util.Set;
 import java.util.HashSet;
 
-public class TestFileInputFormatPathFilter extends TestCase {
+public class TestFileInputFormatPathFilter {
 
   public static class DummyFileInputFormat extends FileInputFormat {
 
@@ -55,12 +57,12 @@ public class TestFileInputFormatPathFilter extends TestCase {
       new Path(new Path(System.getProperty("test.build.data", "."), "data"),
           "TestFileInputFormatPathFilter");
 
-
+  @Before
   public void setUp() throws Exception {
     tearDown();
     localFs.mkdirs(workDir);
   }
-
+  @After
   public void tearDown() throws Exception {
     if (localFs.exists(workDir)) {
       localFs.delete(workDir, true);
@@ -129,18 +131,19 @@ public class TestFileInputFormatPathFilter extends TestCase {
     assertEquals(createdFiles, computedFiles);
   }
 
+  @Test
   public void testWithoutPathFilterWithoutGlob() throws Exception {
     _testInputFiles(false, false);
   }
-
+  @Test
   public void testWithoutPathFilterWithGlob() throws Exception {
     _testInputFiles(false, true);
   }
-
+  @Test
   public void testWithPathFilterWithoutGlob() throws Exception {
     _testInputFiles(true, false);
   }
-
+  @Test
   public void testWithPathFilterWithGlob() throws Exception {
     _testInputFiles(true, true);
   }

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

@@ -20,10 +20,11 @@ package org.apache.hadoop.mapred;
 import org.apache.hadoop.fs.BlockLocation;
 import org.apache.hadoop.net.NetworkTopology;
 
-import junit.framework.TestCase;
+import org.junit.Test;
-
+import static org.junit.Assert.assertTrue;
-public class TestGetSplitHosts extends TestCase {
 
+public class TestGetSplitHosts {
+  @Test
   public void testGetSplitHosts() throws Exception {
 
     int numBlocks = 3;

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

@@ -21,11 +21,12 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.ChecksumException;
 import org.apache.hadoop.io.DataInputBuffer;
 import org.apache.hadoop.io.DataOutputBuffer;
+import org.junit.Test;
+import static org.junit.Assert.fail;
+import static org.junit.Assert.assertEquals;
 
-import junit.framework.TestCase;
+public class TestIFileStreams {
-
+  @Test
-public class TestIFileStreams extends TestCase {
-
   public void testIFileStream() throws Exception {
     final int DLEN = 100;
     DataOutputBuffer dob = new DataOutputBuffer(DLEN + 4);
@@ -42,7 +43,7 @@ public class TestIFileStreams extends TestCase {
     }
     ifis.close();
   }
-
+  @Test
   public void testBadIFileStream() throws Exception {
     final int DLEN = 100;
     DataOutputBuffer dob = new DataOutputBuffer(DLEN + 4);
@@ -73,7 +74,7 @@ public class TestIFileStreams extends TestCase {
     }
     fail("Did not detect bad data in checksum");
   }
-
+  @Test
   public void testBadLength() throws Exception {
     final int DLEN = 100;
     DataOutputBuffer dob = new DataOutputBuffer(DLEN + 4);

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

@@ -17,14 +17,15 @@
  */
 package org.apache.hadoop.mapred;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.mapred.FileInputFormat;
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.util.StringUtils;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
-public class TestInputPath extends TestCase {
+public class TestInputPath {
+  @Test
   public void testInputPath() throws Exception {
     JobConf jobConf = new JobConf();
     Path workingDir = jobConf.getWorkingDirectory();

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

@@ -26,8 +26,6 @@ import java.io.Writer;
 import java.util.Iterator;
 import java.util.StringTokenizer;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.io.FileUtils;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.FileUtil;
@@ -36,8 +34,11 @@ import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.serializer.JavaSerializationComparator;
 import org.apache.hadoop.mapreduce.MRConfig;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
 
-public class TestJavaSerialization extends TestCase {
+public class TestJavaSerialization {
 
   private static String TEST_ROOT_DIR =
     new File(System.getProperty("test.build.data", "/tmp")).toURI()
@@ -90,7 +91,7 @@ public class TestJavaSerialization extends TestCase {
     wr.write("b a\n");
     wr.close();
   }
-  
+  @Test
   public void testMapReduceJob() throws Exception {
 
     JobConf conf = new JobConf(TestJavaSerialization.class);
@@ -149,6 +150,7 @@ public class TestJavaSerialization extends TestCase {
    * coupled to Writable types, if so, the job will fail.
    *
    */
+  @Test
   public void testWriteToSequencefile() throws Exception {
     JobConf conf = new JobConf(TestJavaSerialization.class);
     conf.setJobName("JavaSerialization");

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

@@ -29,8 +29,13 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapred.lib.IdentityMapper;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
 public class TestJobName extends ClusterMapReduceTestCase {
 
+  @Test
   public void testComplexName() throws Exception {
     OutputStream os = getFileSystem().create(new Path(getInputDir(),
         "text.txt"));
@@ -65,6 +70,7 @@ public class TestJobName extends ClusterMapReduceTestCase {
     reader.close();
   }
 
+  @Test
   public void testComplexNameWithRegex() throws Exception {
     OutputStream os = getFileSystem().create(new Path(getInputDir(),
         "text.txt"));

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

@@ -21,8 +21,6 @@ package org.apache.hadoop.mapred;
 import java.io.DataOutputStream;
 import java.io.IOException;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
@@ -32,11 +30,15 @@ import org.apache.hadoop.io.IntWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.server.jobtracker.JTConfig;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
 
 /**
  * A JUnit test to test Job System Directory with Mini-DFS.
  */
-public class TestJobSysDirWithDFS extends TestCase {
+public class TestJobSysDirWithDFS {
   private static final Log LOG =
     LogFactory.getLog(TestJobSysDirWithDFS.class.getName());
   
@@ -115,7 +117,7 @@ public class TestJobSysDirWithDFS extends TestCase {
     //  between Job Client & Job Tracker
     assertTrue(result.job.isSuccessful());
   }
-
+  @Test
   public void testWithDFS() throws IOException {
     MiniDFSCluster dfs = null;
     MiniMRCluster mr = null;

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

@@ -20,7 +20,6 @@ package org.apache.hadoop.mapred;
 
 import java.io.*;
 import java.util.*;
-import junit.framework.TestCase;
 
 import org.apache.commons.logging.*;
 import org.apache.hadoop.fs.*;
@@ -28,8 +27,11 @@ import org.apache.hadoop.io.*;
 import org.apache.hadoop.io.compress.*;
 import org.apache.hadoop.util.LineReader;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 
-public class TestKeyValueTextInputFormat extends TestCase {
+public class TestKeyValueTextInputFormat {
   private static final Log LOG =
     LogFactory.getLog(TestKeyValueTextInputFormat.class.getName());
 
@@ -47,7 +49,7 @@ public class TestKeyValueTextInputFormat extends TestCase {
   private static Path workDir = 
     new Path(new Path(System.getProperty("test.build.data", "."), "data"),
              "TestKeyValueTextInputFormat");
-  
+  @Test
   public void testFormat() throws Exception {
     JobConf job = new JobConf();
     Path file = new Path(workDir, "test.txt");
@@ -134,7 +136,7 @@ public class TestKeyValueTextInputFormat extends TestCase {
                                            (str.getBytes("UTF-8")), 
                                            defaultConf);
   }
-  
+  @Test
   public void testUTF8() throws Exception {
     LineReader in = null;
 
@@ -153,7 +155,7 @@ public class TestKeyValueTextInputFormat extends TestCase {
       }
     }
   }
-
+  @Test
   public void testNewLines() throws Exception {
     LineReader in = null;
     try {
@@ -219,7 +221,8 @@ public class TestKeyValueTextInputFormat extends TestCase {
   /**
    * Test using the gzip codec for reading
    */
-  public static void testGzip() throws IOException {
+  @Test
+  public void testGzip() throws IOException {
     JobConf job = new JobConf();
     CompressionCodec gzip = new GzipCodec();
     ReflectionUtils.setConf(gzip, job);

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

@@ -35,14 +35,15 @@ import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.Writable;
 import org.apache.hadoop.io.WritableComparable;
 import org.apache.hadoop.mapred.lib.LazyOutputFormat;
-import junit.framework.TestCase;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
 
 /**
  * A JUnit test to test the Map-Reduce framework's feature to create part
  * files only if there is an explicit output.collect. This helps in preventing
  * 0 byte files
  */
-public class TestLazyOutput extends TestCase {
+public class TestLazyOutput {
   private static final int NUM_HADOOP_SLAVES = 3;
   private static final int NUM_MAPS_PER_NODE = 2;
   private static final Path INPUT = new Path("/testlazy/input");
@@ -132,7 +133,7 @@ public class TestLazyOutput extends TestCase {
     }
   }
 
-
+  @Test
   public void testLazyOutput() throws Exception {
     MiniDFSCluster dfs = null;
     MiniMRCluster mr = null;

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

@@ -17,16 +17,6 @@
  */
 package org.apache.hadoop.mapred;
 
-import static org.mockito.Matchers.any;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
-
-import java.io.DataOutputStream;
-import java.io.IOException;
-import java.util.concurrent.TimeoutException;
-
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.BlockLocation;
 import org.apache.hadoop.fs.FSDataOutputStream;
@@ -36,9 +26,21 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hdfs.DFSTestUtil;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.apache.hadoop.io.Text;
+import org.junit.After;
+import org.junit.Test;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.concurrent.TimeoutException;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
 
 @SuppressWarnings("deprecation")
-public class TestMRCJCFileInputFormat extends TestCase {
+public class TestMRCJCFileInputFormat {
 
   Configuration conf = new Configuration();
   MiniDFSCluster dfs = null;
@@ -50,6 +52,7 @@ public class TestMRCJCFileInputFormat extends TestCase {
         .build();
   }
 
+  @Test
   public void testLocality() throws Exception {
     JobConf job = new JobConf(conf);
     dfs = newDFSCluster(job);
@@ -109,6 +112,7 @@ public class TestMRCJCFileInputFormat extends TestCase {
     DFSTestUtil.waitReplication(fs, path, replication);
   }
 
+  @Test
   public void testNumInputs() throws Exception {
     JobConf job = new JobConf(conf);
     dfs = newDFSCluster(job);
@@ -157,6 +161,7 @@ public class TestMRCJCFileInputFormat extends TestCase {
     }
   }
 
+  @Test
   public void testMultiLevelInput() throws Exception {
     JobConf job = new JobConf(conf);
 
@@ -195,6 +200,7 @@ public class TestMRCJCFileInputFormat extends TestCase {
   }
 
   @SuppressWarnings("rawtypes")
+  @Test
   public void testLastInputSplitAtSplitBoundary() throws Exception {
     FileInputFormat fif = new FileInputFormatForTest(1024l * 1024 * 1024,
         128l * 1024 * 1024);
@@ -208,6 +214,7 @@ public class TestMRCJCFileInputFormat extends TestCase {
   }
 
   @SuppressWarnings("rawtypes")
+  @Test
   public void testLastInputSplitExceedingSplitBoundary() throws Exception {
     FileInputFormat fif = new FileInputFormatForTest(1027l * 1024 * 1024,
         128l * 1024 * 1024);
@@ -221,6 +228,7 @@ public class TestMRCJCFileInputFormat extends TestCase {
   }
 
   @SuppressWarnings("rawtypes")
+  @Test
   public void testLastInputSplitSingleSplit() throws Exception {
     FileInputFormat fif = new FileInputFormatForTest(100l * 1024 * 1024,
         128l * 1024 * 1024);
@@ -305,7 +313,7 @@ public class TestMRCJCFileInputFormat extends TestCase {
     DFSTestUtil.waitReplication(fileSys, name, replication);
   }
 
-  @Override
+  @After
   public void tearDown() throws Exception {
     if (dfs != null) {
       dfs.shutdown();

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

@@ -18,18 +18,25 @@
 
 package org.apache.hadoop.mapred;
 
-import java.io.*;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.FileUtil;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.RawLocalFileSystem;
+import org.apache.hadoop.io.NullWritable;
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.mapreduce.JobStatus;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.IOException;
 import java.net.URI;
 
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
 
-import org.apache.hadoop.fs.*;
+public class TestMRCJCFileOutputCommitter {
-import org.apache.hadoop.io.*;
-import org.apache.hadoop.mapred.JobContextImpl;
-import org.apache.hadoop.mapred.TaskAttemptContextImpl;
-import org.apache.hadoop.mapreduce.JobStatus;
-
-public class TestMRCJCFileOutputCommitter extends TestCase {
   private static Path outDir = new Path(
      System.getProperty("test.build.data", "/tmp"), "output");
 
@@ -67,6 +74,7 @@ public class TestMRCJCFileOutputCommitter extends TestCase {
   }
 
   @SuppressWarnings("unchecked")
+  @Test
   public void testCommitter() throws Exception {
     JobConf job = new JobConf();
     setConfForFileOutputCommitter(job);
@@ -108,6 +116,7 @@ public class TestMRCJCFileOutputCommitter extends TestCase {
     FileUtil.fullyDelete(new File(outDir.toString()));
   }
 
+  @Test
   public void testAbort() throws IOException {
     JobConf job = new JobConf();
     setConfForFileOutputCommitter(job);
@@ -161,6 +170,7 @@ public class TestMRCJCFileOutputCommitter extends TestCase {
     }
   }
 
+  @Test
   public void testFailAbort() throws IOException {
     JobConf job = new JobConf();
     job.set(FileSystem.FS_DEFAULT_NAME_KEY, "faildel:///");

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

@@ -22,8 +22,6 @@ import java.io.File;
 import java.io.IOException;
 import java.util.List;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.fs.FileSystem;
@@ -40,6 +38,8 @@ import org.apache.hadoop.mapreduce.split.JobSplit.TaskSplitMetaInfo;
 import org.apache.hadoop.mapreduce.split.JobSplitWriter;
 import org.apache.hadoop.mapreduce.split.SplitMetaInfoReader;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
 
 /**
  *  Validates map phase progress.
@@ -55,7 +55,7 @@ import org.apache.hadoop.util.ReflectionUtils;
  *  once mapTask.run() is finished. Sort phase progress in map task is not
  *  validated here.
  */
-public class TestMapProgress extends TestCase {
+public class TestMapProgress {
   public static final Log LOG = LogFactory.getLog(TestMapProgress.class);
   private static String TEST_ROOT_DIR;
   static {
@@ -235,6 +235,7 @@ public class TestMapProgress extends TestCase {
    *  Validates map phase progress after each record is processed by map task
    *  using custom task reporter.
    */
+  @Test
   public void testMapProgress() throws Exception {
     JobConf job = new JobConf();
     fs = FileSystem.getLocal(job);

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

@@ -44,8 +44,8 @@ import org.apache.hadoop.io.serializer.SerializationFactory;
 import org.apache.hadoop.io.serializer.Serializer;
 
 import org.apache.hadoop.mapred.Task.TaskReporter;
-
+import org.junit.Test;
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
 
 @SuppressWarnings(value={"unchecked", "deprecation"})
 /**
@@ -56,7 +56,7 @@ import junit.framework.TestCase;
  * framework's merge on the reduce side will merge the partitions created to
  * generate the final output which is sorted on the key.
  */
-public class TestMerge extends TestCase {
+public class TestMerge {
   private static final int NUM_HADOOP_DATA_NODES = 2;
   // Number of input files is same as the number of mappers.
   private static final int NUM_MAPPERS = 10;
@@ -69,6 +69,7 @@ public class TestMerge extends TestCase {
   // Where output goes.
   private static final Path OUTPUT = new Path("/testplugin/output");
 
+  @Test
   public void testMerge() throws Exception {
     MiniDFSCluster dfsCluster = null;
     MiniMRClientCluster mrCluster = null;

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

@@ -18,14 +18,16 @@
 
 package org.apache.hadoop.mapred;
 
+import org.junit.Test;
+
 import java.io.IOException;
-import junit.framework.TestCase;
 
 /**
  * A Unit-test to test bringup and shutdown of Mini Map-Reduce Cluster.
  */
-public class TestMiniMRBringup extends TestCase {
+public class TestMiniMRBringup {
 
+  @Test
   public void testBringUp() throws IOException {
     MiniMRCluster mr = null;
     try {

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

@@ -18,20 +18,23 @@
 
 package org.apache.hadoop.mapred;
 
-import java.io.*;
-import junit.framework.TestCase;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.mapred.MRCaching.TestResult;
 import org.junit.Ignore;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
 
 /**
  * A JUnit test to test caching with DFS
  * 
  */
 @Ignore
-public class TestMiniMRDFSCaching extends TestCase {
+public class TestMiniMRDFSCaching {
 
+  @Test
   public void testWithDFS() throws IOException {
     MiniMRCluster mr = null;
     MiniDFSCluster dfs = null;
@@ -70,9 +73,4 @@ public class TestMiniMRDFSCaching extends TestCase {
       }
     }
   }
-
-  public static void main(String[] argv) throws Exception {
-    TestMiniMRDFSCaching td = new TestMiniMRDFSCaching();
-    td.testWithDFS();
-  }
 }

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

@@ -21,17 +21,17 @@ import java.io.IOException;
 import java.util.BitSet;
 import java.util.HashMap;
 import java.util.Random;
-
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.fs.FSDataOutputStream;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.Text;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 
-public class TestMultiFileInputFormat extends TestCase{
+public class TestMultiFileInputFormat {
 
   private static JobConf job = new JobConf();
 
@@ -80,6 +80,7 @@ public class TestMultiFileInputFormat extends TestCase{
     return multiFileDir;
   }
 
+  @Test
   public void testFormat() throws IOException {
     LOG.info("Test started");
     LOG.info("Max split count           = " + MAX_SPLIT_COUNT);
@@ -123,6 +124,7 @@ public class TestMultiFileInputFormat extends TestCase{
     LOG.info("Test Finished");
   }
 
+  @Test
   public void testFormatWithLessPathsThanSplits() throws Exception {
     MultiFileInputFormat<Text,Text> format = new DummyMultiFileInputFormat();
     FileSystem fs = FileSystem.getLocal(job);     
@@ -135,9 +137,4 @@ public class TestMultiFileInputFormat extends TestCase{
     initFiles(fs, 2, 500);
     assertEquals(2, format.getSplits(job, 4).length);
   }
-  
-  public static void main(String[] args) throws Exception{
-    TestMultiFileInputFormat test = new TestMultiFileInputFormat();
-    test.testFormat();
-  }
 }

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

@@ -27,16 +27,19 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.util.Arrays;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.IOUtils;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
 /**
  * 
  * test MultiFileSplit class
  */
-public class TestMultiFileSplit extends TestCase{
+public class TestMultiFileSplit {
 
+    @Test
     public void testReadWrite() throws Exception {
       MultiFileSplit split = new MultiFileSplit(new JobConf(), new Path[] {new Path("/test/path/1"), new Path("/test/path/2")}, new long[] {100,200});
         
@@ -70,6 +73,7 @@ public class TestMultiFileSplit extends TestCase{
      * test method getLocations
      * @throws IOException
      */
+    @Test
     public void testgetLocations() throws IOException{
         JobConf job= new JobConf();
       

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

@@ -17,10 +17,6 @@
  */
 package org.apache.hadoop.mapred;
 
-import java.io.IOException;
-
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -32,12 +28,17 @@ import org.apache.hadoop.mapred.lib.IdentityReducer;
 import org.apache.hadoop.mapreduce.JobCounter;
 import org.apache.hadoop.mapreduce.server.jobtracker.JTConfig;
 import org.junit.Ignore;
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static org.junit.Assert.assertEquals;
 
 /**
  * This test checks whether the task caches are created and used properly.
  */
 @Ignore
-public class TestMultipleLevelCaching extends TestCase {
+public class TestMultipleLevelCaching {
   private static final int MAX_LEVEL = 5;
   final Path inDir = new Path("/cachetesting");
   final Path outputPath = new Path("/output");
@@ -71,6 +72,7 @@ public class TestMultipleLevelCaching extends TestCase {
     return rack.toString();
   }
 
+  @Test
   public void testMultiLevelCaching() throws Exception {
     for (int i = 1 ; i <= MAX_LEVEL; ++i) {
       testCachingAtLevel(i);

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

@@ -18,15 +18,19 @@
 
 package org.apache.hadoop.mapred;
 
-import java.io.*;
+import org.apache.hadoop.fs.FileSystem;
-import junit.framework.TestCase;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.mapred.lib.MultipleTextOutputFormat;
+import org.junit.Test;
 
-import org.apache.hadoop.fs.*;
+import java.io.File;
-import org.apache.hadoop.io.*;
+import java.io.IOException;
 
-import org.apache.hadoop.mapred.lib.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 
-public class TestMultipleTextOutputFormat extends TestCase {
+public class TestMultipleTextOutputFormat {
   private static JobConf defaultConf = new JobConf();
 
   private static FileSystem localFs = null;
@@ -84,6 +88,7 @@ public class TestMultipleTextOutputFormat extends TestCase {
     rw.close(null);
   }
 
+  @Test
   public void testFormat() throws Exception {
     JobConf job = new JobConf();
     job.set(JobContext.TASK_ATTEMPT_ID, attempt);
@@ -145,8 +150,4 @@ public class TestMultipleTextOutputFormat extends TestCase {
     //System.out.printf("File_2 output: %s\n", output);
     assertEquals(output, expectedOutput.toString());
   }
-
-  public static void main(String[] args) throws Exception {
-    new TestMultipleTextOutputFormat().testFormat();
-  }
 }

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

@@ -19,17 +19,18 @@
 package org.apache.hadoop.mapred;
 
 import org.apache.hadoop.mapreduce.TaskCounter;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 public class TestReduceFetch extends TestReduceFetchFromPartialMem {
 
-  static {
-    setSuite(TestReduceFetch.class);
-  }
-
   /**
    * Verify that all segments are read from disk
    * @throws Exception might be thrown
    */
+  @Test
   public void testReduceFromDisk() throws Exception {
     final int MAP_TASKS = 8;
     JobConf job = mrCluster.createJobConf();
@@ -53,6 +54,7 @@ public class TestReduceFetch extends TestReduceFetchFromPartialMem {
    * Verify that no segment hits disk.
    * @throws Exception might be thrown
    */
+  @Test
   public void testReduceFromMem() throws Exception {
     final int MAP_TASKS = 3;
     JobConf job = mrCluster.createJobConf();

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

@@ -18,10 +18,6 @@
 
 package org.apache.hadoop.mapred;
 
-import junit.extensions.TestSetup;
-import junit.framework.Test;
-import junit.framework.TestCase;
-import junit.framework.TestSuite;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -30,7 +26,9 @@ import org.apache.hadoop.io.NullWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.WritableComparator;
 import org.apache.hadoop.mapreduce.TaskCounter;
-import org.apache.hadoop.mapreduce.MRConfig;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
 
 import java.io.DataInput;
 import java.io.DataOutput;
@@ -39,34 +37,27 @@ import java.util.Arrays;
 import java.util.Formatter;
 import java.util.Iterator;
 
-public class TestReduceFetchFromPartialMem extends TestCase {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+public class TestReduceFetchFromPartialMem {
 
   protected static MiniMRCluster mrCluster = null;
   protected static MiniDFSCluster dfsCluster = null;
-  protected static TestSuite mySuite;
 
-  protected static void setSuite(Class<? extends TestCase> klass) {
+  @Before
-    mySuite  = new TestSuite(klass);
+  public void setUp() throws Exception {
+    Configuration conf = new Configuration();
+    dfsCluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
+    mrCluster = new MiniMRCluster(2,
+      dfsCluster.getFileSystem().getUri().toString(), 1);
   }
 
-  static {
+  @After
-    setSuite(TestReduceFetchFromPartialMem.class);
+  public void tearDown() throws Exception {
-  }
+    if (dfsCluster != null) { dfsCluster.shutdown(); }
-  
+    if (mrCluster != null) { mrCluster.shutdown(); }
-  public static Test suite() {
-    TestSetup setup = new TestSetup(mySuite) {
-      protected void setUp() throws Exception {
-        Configuration conf = new Configuration();
-        dfsCluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
-        mrCluster = new MiniMRCluster(2,
-            dfsCluster.getFileSystem().getUri().toString(), 1);
-      }
-      protected void tearDown() throws Exception {
-        if (dfsCluster != null) { dfsCluster.shutdown(); }
-        if (mrCluster != null) { mrCluster.shutdown(); }
-      }
-    };
-    return setup;
   }
 
   private static final String tagfmt = "%04d";
@@ -78,6 +69,7 @@ public class TestReduceFetchFromPartialMem extends TestCase {
   }
 
   /** Verify that at least one segment does not hit disk */
+  @Test
   public void testReduceFromPartialMem() throws Exception {
     final int MAP_TASKS = 7;
     JobConf job = mrCluster.createJobConf();

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

@@ -17,10 +17,6 @@
  */
 package org.apache.hadoop.mapred;
 
-import java.io.IOException;
-
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.LocalFileSystem;
@@ -30,11 +26,17 @@ import org.apache.hadoop.io.WritableComparator;
 import org.apache.hadoop.io.compress.CompressionCodec;
 import org.apache.hadoop.io.compress.DefaultCodec;
 import org.apache.hadoop.util.Progressable;
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 /**
  * This test exercises the ValueIterator.
  */
-public class TestReduceTask extends TestCase {
+public class TestReduceTask {
 
   static class NullProgress implements Progressable {
     public void progress() { }
@@ -119,9 +121,10 @@ public class TestReduceTask extends TestCase {
     }
     assertEquals(vals.length, i);
     // make sure we have progress equal to 1.0
-    assertEquals(1.0f, rawItr.getProgress().get());
+    assertEquals(1.0f, rawItr.getProgress().get(),0.0000);
   }
 
+  @Test
   public void testValueIterator() throws Exception {
     Path tmpDir = new Path("build/test/test.reduce.task");
     Configuration conf = new Configuration();
@@ -130,6 +133,7 @@ public class TestReduceTask extends TestCase {
     }
   }
 
+  @Test
   public void testValueIteratorWithCompression() throws Exception {
     Path tmpDir = new Path("build/test/test.reduce.task.compression");
     Configuration conf = new Configuration();

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

@@ -18,19 +18,26 @@
 
 package org.apache.hadoop.mapred;
 
+import org.apache.commons.logging.Log;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.BytesWritable;
+import org.apache.hadoop.io.DataInputBuffer;
+import org.apache.hadoop.io.SequenceFile;
+import org.apache.hadoop.io.Text;
+import org.junit.Test;
+
 import java.io.IOException;
 import java.util.Random;
 
-import org.apache.hadoop.fs.*;
+import static org.junit.Assert.assertEquals;
-import org.apache.hadoop.io.*;
+import static org.junit.Assert.assertTrue;
 
-import junit.framework.TestCase;
+public class TestSequenceFileAsBinaryInputFormat {
-import org.apache.commons.logging.*;
-
-public class TestSequenceFileAsBinaryInputFormat extends TestCase {
   private static final Log LOG = FileInputFormat.LOG;
   private static final int RECORDS = 10000;
 
+  @Test
   public void testBinary() throws IOException {
     JobConf job = new JobConf();
     FileSystem fs = FileSystem.getLocal(job);

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

@@ -18,24 +18,35 @@
 
 package org.apache.hadoop.mapred;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.BooleanWritable;
+import org.apache.hadoop.io.BytesWritable;
+import org.apache.hadoop.io.DataInputBuffer;
+import org.apache.hadoop.io.DataOutputBuffer;
+import org.apache.hadoop.io.DoubleWritable;
+import org.apache.hadoop.io.FloatWritable;
+import org.apache.hadoop.io.IntWritable;
+import org.apache.hadoop.io.SequenceFile.CompressionType;
+import org.junit.Test;
+
 import java.io.IOException;
 import java.util.Random;
 
-import org.apache.hadoop.fs.*;
+import static org.junit.Assert.assertEquals;
-import org.apache.hadoop.io.*;
+import static org.junit.Assert.assertTrue;
-import org.apache.hadoop.io.SequenceFile.CompressionType;
+import static org.junit.Assert.fail;
 
-import junit.framework.TestCase;
+public class TestSequenceFileAsBinaryOutputFormat {
-import org.apache.commons.logging.*;
-
-public class TestSequenceFileAsBinaryOutputFormat extends TestCase {
   private static final Log LOG =
       LogFactory.getLog(TestSequenceFileAsBinaryOutputFormat.class.getName());
-
   private static final int RECORDS = 10000;
   // A random task attempt id for testing.
   private static final String attempt = "attempt_200707121733_0001_m_000000_0";
 
+  @Test
   public void testBinary() throws IOException {
     JobConf job = new JobConf();
     FileSystem fs = FileSystem.getLocal(job);
@@ -129,6 +140,7 @@ public class TestSequenceFileAsBinaryOutputFormat extends TestCase {
     assertEquals("Some records not found", RECORDS, count);
   }
 
+  @Test
   public void testSequenceOutputClassDefaultsToMapRedOutputClass()
          throws IOException {
     JobConf job = new JobConf();
@@ -163,6 +175,7 @@ public class TestSequenceFileAsBinaryOutputFormat extends TestCase {
                                                                          job));
   }
 
+  @Test
   public void testcheckOutputSpecsForbidRecordCompression() throws IOException {
     JobConf job = new JobConf();
     FileSystem fs = FileSystem.getLocal(job);

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

@@ -18,22 +18,29 @@
 
 package org.apache.hadoop.mapred;
 
-import java.io.*;
+import org.apache.commons.logging.Log;
-import java.util.*;
+import org.apache.hadoop.conf.Configuration;
-import junit.framework.TestCase;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.IntWritable;
+import org.apache.hadoop.io.LongWritable;
+import org.apache.hadoop.io.SequenceFile;
+import org.apache.hadoop.io.Text;
+import org.junit.Test;
 
-import org.apache.commons.logging.*;
+import java.util.BitSet;
+import java.util.Random;
 
-import org.apache.hadoop.fs.*;
+import static org.junit.Assert.assertEquals;
-import org.apache.hadoop.io.*;
+import static org.junit.Assert.assertFalse;
-import org.apache.hadoop.conf.*;
 
-public class TestSequenceFileAsTextInputFormat extends TestCase {
+public class TestSequenceFileAsTextInputFormat {
   private static final Log LOG = FileInputFormat.LOG;
 
   private static int MAX_LENGTH = 10000;
   private static Configuration conf = new Configuration();
 
+  @Test
   public void testFormat() throws Exception {
     JobConf job = new JobConf(conf);
     FileSystem fs = FileSystem.getLocal(conf);
@@ -112,8 +119,4 @@ public class TestSequenceFileAsTextInputFormat extends TestCase {
 
     }
   }
-
-  public static void main(String[] args) throws Exception {
-    new TestSequenceFileAsTextInputFormat().testFormat();
-  }
 }

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

@@ -18,17 +18,21 @@
 
 package org.apache.hadoop.mapred;
 
-import java.io.*;
+import org.apache.commons.logging.Log;
-import java.util.*;
+import org.apache.hadoop.conf.Configuration;
-import junit.framework.TestCase;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.BytesWritable;
+import org.apache.hadoop.io.SequenceFile;
+import org.apache.hadoop.io.Text;
+import org.junit.Test;
 
-import org.apache.commons.logging.*;
+import java.io.IOException;
+import java.util.Random;
 
-import org.apache.hadoop.fs.*;
+import static org.junit.Assert.assertEquals;
-import org.apache.hadoop.io.*;
-import org.apache.hadoop.conf.*;
 
-public class TestSequenceFileInputFilter extends TestCase {
+public class TestSequenceFileInputFilter {
   private static final Log LOG = FileInputFormat.LOG;
 
   private static final int MAX_LENGTH = 15000;
@@ -98,6 +102,7 @@ public class TestSequenceFileInputFilter extends TestCase {
     return count;
   }
 
+  @Test
   public void testRegexFilter() throws Exception {
     // set the filter class
     LOG.info("Testing Regex Filter with patter: \\A10*");
@@ -121,6 +126,7 @@ public class TestSequenceFileInputFilter extends TestCase {
     fs.delete(inDir, true);
   }
 
+  @Test
   public void testPercentFilter() throws Exception {
     LOG.info("Testing Percent Filter with frequency: 1000");
     // set the filter class
@@ -148,6 +154,7 @@ public class TestSequenceFileInputFilter extends TestCase {
     fs.delete(inDir, true);
   }
 
+  @Test
   public void testMD5Filter() throws Exception {
     // set the filter class
     LOG.info("Testing MD5 Filter with frequency: 1000");
@@ -168,9 +175,4 @@ public class TestSequenceFileInputFilter extends TestCase {
     // clean up
     fs.delete(inDir, true);
   }
-
-  public static void main(String[] args) throws Exception {
-    TestSequenceFileInputFilter filter = new TestSequenceFileInputFilter();
-    filter.testRegexFilter();
-  }
 }

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

@@ -18,22 +18,28 @@
 
 package org.apache.hadoop.mapred;
 
-import java.io.*;
+import org.apache.commons.logging.Log;
-import java.util.*;
+import org.apache.hadoop.conf.Configuration;
-import junit.framework.TestCase;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.BytesWritable;
+import org.apache.hadoop.io.IntWritable;
+import org.apache.hadoop.io.SequenceFile;
+import org.junit.Test;
 
-import org.apache.commons.logging.*;
+import java.util.BitSet;
+import java.util.Random;
 
-import org.apache.hadoop.fs.*;
+import static org.junit.Assert.assertEquals;
-import org.apache.hadoop.io.*;
+import static org.junit.Assert.assertFalse;
-import org.apache.hadoop.conf.*;
 
-public class TestSequenceFileInputFormat extends TestCase {
+public class TestSequenceFileInputFormat {
   private static final Log LOG = FileInputFormat.LOG;
 
   private static int MAX_LENGTH = 10000;
   private static Configuration conf = new Configuration();
 
+  @Test
   public void testFormat() throws Exception {
     JobConf job = new JobConf(conf);
     FileSystem fs = FileSystem.getLocal(conf);
@@ -110,8 +116,4 @@ public class TestSequenceFileInputFormat extends TestCase {
 
     }
   }
-
-  public static void main(String[] args) throws Exception {
-    new TestSequenceFileInputFormat().testFormat();
-  }
 }

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

@@ -17,18 +17,20 @@
  */
 package org.apache.hadoop.mapred;
 
-import java.util.Iterator;
-
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.mapred.SortedRanges.Range;
+import org.junit.Test;
 
-public class TestSortedRanges extends TestCase {
+import java.util.Iterator;
+
+import static org.junit.Assert.assertEquals;
+
+public class TestSortedRanges {
   private static final Log LOG =
     LogFactory.getLog(TestSortedRanges.class);
 
+  @Test
   public void testAdd() {
     SortedRanges sr = new SortedRanges();
     sr.add(new Range(2,9));
@@ -67,6 +69,7 @@ public class TestSortedRanges extends TestCase {
     
   }
 
+  @Test
   public void testRemove() {
     SortedRanges sr = new SortedRanges();
     sr.add(new Range(2,19));

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

@@ -18,12 +18,6 @@
 
 package org.apache.hadoop.mapred;
 
-import java.io.DataOutputStream;
-import java.io.IOException;
-import java.net.URI;
-
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -34,14 +28,20 @@ import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapred.lib.IdentityMapper;
 import org.apache.hadoop.mapred.lib.IdentityReducer;
-import org.apache.hadoop.mapreduce.MRConfig;
-import org.apache.hadoop.mapreduce.server.jobtracker.JTConfig;
 import org.apache.hadoop.util.Progressable;
+import org.junit.Test;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.URI;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 /**
  * A JUnit test to test that jobs' output filenames are not HTML-encoded (cf HADOOP-1795).
  */
-public class TestSpecialCharactersInOutputPath extends TestCase {
+public class TestSpecialCharactersInOutputPath {
   private static final Log LOG =
     LogFactory.getLog(TestSpecialCharactersInOutputPath.class.getName());
   
@@ -97,6 +97,7 @@ public class TestSpecialCharactersInOutputPath extends TestCase {
     return (runningJob.isSuccessful());
   }
 
+  @Test
   public void testJobWithDFS() throws IOException {
     String namenode = null;
     MiniDFSCluster dfs = null;

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

@@ -19,14 +19,18 @@ package org.apache.hadoop.mapred;
 
 import java.util.Map;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.mapred.StatisticsCollector.TimeWindow;
 import org.apache.hadoop.mapred.StatisticsCollector.Stat;
+import org.junit.Test;
 
-public class TestStatisticsCollector extends TestCase{
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+public class TestStatisticsCollector {
 
   @SuppressWarnings("rawtypes")
+  @Test
   public void testMovingWindow() throws Exception {
     StatisticsCollector collector = new StatisticsCollector(1);
     TimeWindow window = new TimeWindow("test", 6, 2);

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

@@ -17,6 +17,15 @@
  */
 package org.apache.hadoop.mapred;
 
+import org.apache.hadoop.fs.FileSystem;
+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.lib.IdentityMapper;
+import org.apache.hadoop.mapred.lib.IdentityReducer;
+import org.junit.Test;
+
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.IOException;
@@ -26,18 +35,10 @@ import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.io.Writer;
 
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
-
+import static org.junit.Assert.assertTrue;
-import org.apache.hadoop.fs.FileSystem;
-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.lib.IdentityMapper;
-import org.apache.hadoop.mapred.lib.IdentityReducer;
-
-public class TestUserDefinedCounters extends TestCase {
 
+public class TestUserDefinedCounters {
   private static String TEST_ROOT_DIR =
     new File(System.getProperty("test.build.data", "/tmp")).toURI()
     .toString().replace(' ', '+')
@@ -75,6 +76,7 @@ public class TestUserDefinedCounters extends TestCase {
     wr.close();
   }
 
+  @Test
   public void testMapReduceJob() throws Exception {
 
     JobConf conf = new JobConf(TestUserDefinedCounters.class);

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

@@ -18,12 +18,6 @@
 
 package org.apache.hadoop.mapred;
 
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.Map;
-
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.DataInputBuffer;
 import org.apache.hadoop.io.DataOutputBuffer;
@@ -31,8 +25,15 @@ import org.apache.hadoop.io.serializer.Deserializer;
 import org.apache.hadoop.io.serializer.SerializationFactory;
 import org.apache.hadoop.io.serializer.Serializer;
 import org.apache.hadoop.util.GenericsUtil;
+import org.junit.Test;
 
-public class TestWritableJobConf extends TestCase {
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+import static org.junit.Assert.assertTrue;
+
+public class TestWritableJobConf {
 
   private static final Configuration CONF = new Configuration();
 
@@ -78,15 +79,17 @@ public class TestWritableJobConf extends TestCase {
       }
     }
 
-    assertEquals(map1, map2);
+    assertTrue(map1.equals(map2));
   }
 
+  @Test
   public void testEmptyConfiguration() throws Exception {
     JobConf conf = new JobConf();
     Configuration deser = serDeser(conf);
     assertEquals(conf, deser);
   }
 
+  @Test
   public void testNonEmptyConfiguration() throws Exception {
     JobConf conf = new JobConf();
     conf.set("a", "A");
@@ -95,6 +98,7 @@ public class TestWritableJobConf extends TestCase {
     assertEquals(conf, deser);
   }
 
+  @Test
   public void testConfigurationWithDefaults() throws Exception {
     JobConf conf = new JobConf(false);
     conf.set("a", "A");

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

@@ -18,6 +18,10 @@
 
 package org.apache.hadoop.mapred;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
 import static org.mockito.Matchers.any;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.doReturn;
@@ -38,8 +42,6 @@ import java.security.PrivilegedExceptionAction;
 import java.util.List;
 import java.util.Map;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -113,7 +115,7 @@ import org.mockito.stubbing.Answer;
  * Test YarnRunner and make sure the client side plugin works
  * fine
  */
-public class TestYARNRunner extends TestCase {
+public class TestYARNRunner {
   private static final Log LOG = LogFactory.getLog(TestYARNRunner.class);
   private static final RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
 

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

@@ -22,11 +22,6 @@ import java.io.DataOutput;
 import java.io.IOException;
 import java.util.Iterator;
 
-import junit.framework.Test;
-import junit.framework.TestCase;
-import junit.framework.TestSuite;
-import junit.extensions.TestSetup;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.Path;
@@ -54,23 +49,27 @@ import org.apache.hadoop.mapred.Utils;
 import org.apache.hadoop.mapred.lib.IdentityMapper;
 import org.apache.hadoop.mapred.lib.IdentityReducer;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
 
-public class TestDatamerge extends TestCase {
+public class TestDatamerge {
 
   private static MiniDFSCluster cluster = null;
-  public static Test suite() {
+
-    TestSetup setup = new TestSetup(new TestSuite(TestDatamerge.class)) {
+  @Before
-      protected void setUp() throws Exception {
+  public void setUp() throws Exception {
-        Configuration conf = new Configuration();
+    Configuration conf = new Configuration();
-        cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
+    cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
-      }
+  }
-      protected void tearDown() throws Exception {
+  @After
-        if (cluster != null) {
+  public void tearDown() throws Exception {
-          cluster.shutdown();
+    if (cluster != null) {
-        }
+      cluster.shutdown();
-      }
+    }
-    };
-    return setup;
   }
 
   private static SequenceFile.Writer[] createWriters(Path testdir,
@@ -246,18 +245,22 @@ public class TestDatamerge extends TestCase {
     base.getFileSystem(job).delete(base, true);
   }
 
+  @Test
   public void testSimpleInnerJoin() throws Exception {
     joinAs("inner", InnerJoinChecker.class);
   }
 
+  @Test
   public void testSimpleOuterJoin() throws Exception {
     joinAs("outer", OuterJoinChecker.class);
   }
 
+  @Test
   public void testSimpleOverride() throws Exception {
     joinAs("override", OverrideChecker.class);
   }
 
+  @Test
   public void testNestedJoin() throws Exception {
     // outer(inner(S1,...,Sn),outer(S1,...Sn))
     final int SOURCES = 3;
@@ -350,6 +353,7 @@ public class TestDatamerge extends TestCase {
 
   }
 
+  @Test
   public void testEmptyJoin() throws Exception {
     JobConf job = new JobConf();
     Path base = cluster.getFileSystem().makeQualified(new Path("/empty"));

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

@@ -26,8 +26,6 @@ import java.io.IOException;
 import java.util.Arrays;
 import java.util.Random;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.io.BooleanWritable;
 import org.apache.hadoop.io.BytesWritable;
 import org.apache.hadoop.io.FloatWritable;
@@ -36,8 +34,12 @@ import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.Writable;
 import org.apache.hadoop.io.WritableUtils;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 
-public class TestTupleWritable extends TestCase {
+public class TestTupleWritable {
 
   private TupleWritable makeTuple(Writable[] writs) {
     Writable[] sub1 = { writs[1], writs[2] };
@@ -100,6 +102,7 @@ public class TestTupleWritable extends TestCase {
     return i;
   }
 
+  @Test
   public void testIterable() throws Exception {
     Random r = new Random();
     Writable[] writs = {
@@ -121,6 +124,7 @@ public class TestTupleWritable extends TestCase {
     verifIter(writs, t, 0);
   }
 
+  @Test
   public void testNestedIterable() throws Exception {
     Random r = new Random();
     Writable[] writs = {
@@ -139,6 +143,7 @@ public class TestTupleWritable extends TestCase {
     assertTrue("Bad count", writs.length == verifIter(writs, sTuple, 0));
   }
 
+  @Test
   public void testWritable() throws Exception {
     Random r = new Random();
     Writable[] writs = {
@@ -162,6 +167,7 @@ public class TestTupleWritable extends TestCase {
     assertTrue("Failed to write/read tuple", sTuple.equals(dTuple));
   }
 
+  @Test
   public void testWideWritable() throws Exception {
     Writable[] manyWrits = makeRandomWritables(131);
     
@@ -181,6 +187,7 @@ public class TestTupleWritable extends TestCase {
     assertEquals("All tuple data has not been read from the stream",-1,in.read());
   }
 
+  @Test
   public void testWideWritable2() throws Exception {
     Writable[] manyWrits = makeRandomWritables(71);
     
@@ -202,6 +209,7 @@ public class TestTupleWritable extends TestCase {
    * Tests a tuple writable with more than 64 values and the values set written
    * spread far apart.
    */
+  @Test
   public void testSparseWideWritable() throws Exception {
     Writable[] manyWrits = makeRandomWritables(131);
     
@@ -220,7 +228,7 @@ public class TestTupleWritable extends TestCase {
     assertTrue("Failed to write/read tuple", sTuple.equals(dTuple));
     assertEquals("All tuple data has not been read from the stream",-1,in.read());
   }
-  
+  @Test
   public void testWideTuple() throws Exception {
     Text emptyText = new Text("Should be empty");
     Writable[] values = new Writable[64];
@@ -240,7 +248,7 @@ public class TestTupleWritable extends TestCase {
       }
     }
   }
-  
+  @Test
   public void testWideTuple2() throws Exception {
     Text emptyText = new Text("Should be empty");
     Writable[] values = new Writable[64];
@@ -264,6 +272,7 @@ public class TestTupleWritable extends TestCase {
   /**
    * Tests that we can write more than 64 values.
    */
+  @Test
   public void testWideTupleBoundary() throws Exception {
     Text emptyText = new Text("Should not be set written");
     Writable[] values = new Writable[65];
@@ -287,6 +296,7 @@ public class TestTupleWritable extends TestCase {
   /**
    * Tests compatibility with pre-0.21 versions of TupleWritable
    */
+  @Test
   public void testPreVersion21Compatibility() throws Exception {
     Writable[] manyWrits = makeRandomWritables(64);
     PreVersion21TupleWritable oldTuple = new PreVersion21TupleWritable(manyWrits);
@@ -304,7 +314,7 @@ public class TestTupleWritable extends TestCase {
     assertTrue("Tuple writable is unable to read pre-0.21 versions of TupleWritable", oldTuple.isCompatible(dTuple));
     assertEquals("All tuple data has not been read from the stream",-1,in.read());
   }
-  
+  @Test
   public void testPreVersion21CompatibilityEmptyTuple() throws Exception {
     Writable[] manyWrits = new Writable[0];
     PreVersion21TupleWritable oldTuple = new PreVersion21TupleWritable(manyWrits);

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

@@ -21,8 +21,6 @@ import java.io.DataInput;
 import java.io.DataOutput;
 import java.io.IOException;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.NullWritable;
@@ -35,13 +33,16 @@ import org.apache.hadoop.mapred.JobConfigurable;
 import org.apache.hadoop.mapred.RecordReader;
 import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.junit.Test;
+import static org.junit.Assert.assertTrue;
 
-public class TestWrappedRecordReaderClassloader extends TestCase {
+public class TestWrappedRecordReaderClassloader {
   /**
    * Tests the class loader set by {@link JobConf#setClassLoader(ClassLoader)}
    * is inherited by any {@link WrappedRecordReader}s created by
    * {@link CompositeRecordReader}
    */
+  @Test
   public void testClassLoader() throws Exception {
     JobConf job = new JobConf();
     Fake_ClassLoader classLoader = new Fake_ClassLoader();

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

@@ -20,8 +20,6 @@ package org.apache.hadoop.mapred.lib;
 import java.io.DataOutputStream;
 import java.io.IOException;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
@@ -32,9 +30,12 @@ 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 static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
 
-public class TestDelegatingInputFormat extends TestCase {
+public class TestDelegatingInputFormat {
-
+  @Test
   public void testSplitting() throws Exception {
     JobConf conf = new JobConf();
     MiniDFSCluster dfs = null;

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

@@ -20,13 +20,14 @@ package org.apache.hadoop.mapred.lib;
 
 import java.io.*;
 import java.util.*;
-import junit.framework.TestCase;
 
 import org.apache.hadoop.fs.*;
 import org.apache.hadoop.io.*;
 import org.apache.hadoop.mapred.*;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
-public class TestLineInputFormat extends TestCase {
+public class TestLineInputFormat {
   private static int MAX_LENGTH = 200;
   
   private static JobConf defaultConf = new JobConf();
@@ -43,7 +44,7 @@ public class TestLineInputFormat extends TestCase {
   private static Path workDir = 
     new Path(new Path(System.getProperty("test.build.data", "."), "data"),
              "TestLineInputFormat");
-  
+  @Test
   public void testFormat() throws Exception {
     JobConf job = new JobConf();
     Path file = new Path(workDir, "test.txt");

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

@@ -36,7 +36,6 @@ import static org.junit.Assert.assertEquals;
  * @see TestDelegatingInputFormat
  */
 public class TestMultipleInputs {
-
   @Test
   public void testAddInputPathWithFormat() {
     final JobConf conf = new JobConf();
@@ -49,7 +48,6 @@ public class TestMultipleInputs {
     assertEquals(KeyValueTextInputFormat.class, inputs.get(new Path("/bar"))
        .getClass());
   }
-
   @Test
   public void testAddInputPathWithMapper() {
     final JobConf conf = new JobConf();

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

@@ -22,13 +22,14 @@ import org.apache.hadoop.io.*;
 import org.apache.hadoop.mapred.*;
 import org.apache.hadoop.mapred.lib.*;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
-import junit.framework.TestCase;
 import java.io.*;
 import java.util.*;
 import java.text.NumberFormat;
 
-public class TestAggregates extends TestCase {
+public class TestAggregates {
 
   private static NumberFormat idFormat = NumberFormat.getInstance();
     static {
@@ -36,7 +37,7 @@ public class TestAggregates extends TestCase {
       idFormat.setGroupingUsed(false);
   }
 
-
+  @Test
   public void testAggregates() throws Exception {
     launch();
   }

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

@@ -19,13 +19,13 @@ package org.apache.hadoop.mapred.lib.db;
 
 import java.io.IOException;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.io.NullWritable;
 import org.apache.hadoop.mapred.JobConf;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 
-public class TestConstructQuery extends TestCase {
+public class TestConstructQuery {
-  
   private String[] fieldNames = new String[] { "id", "name", "value" };
   private String[] nullFieldNames = new String[] { null, null, null };
   private String expected = "INSERT INTO hadoop_output (id,name,value) VALUES (?,?,?);";
@@ -33,7 +33,7 @@ public class TestConstructQuery extends TestCase {
   
   private DBOutputFormat<DBWritable, NullWritable> format 
     = new DBOutputFormat<DBWritable, NullWritable>();
-  
+  @Test
   public void testConstructQuery() {
     String actual = format.constructQuery("hadoop_output", fieldNames);
     assertEquals(expected, actual);
@@ -41,7 +41,7 @@ public class TestConstructQuery extends TestCase {
     actual = format.constructQuery("hadoop_output", nullFieldNames);
     assertEquals(nullExpected, actual);
   }
-  
+  @Test
   public void testSetOutput() throws IOException {
     JobConf job = new JobConf();
     DBOutputFormat.setOutput(job, "hadoop_output", fieldNames);

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

@@ -44,10 +44,13 @@ import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.util.StringUtils;
 import org.apache.hadoop.util.ToolRunner;
 import org.junit.Ignore;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
 
-import junit.framework.TestCase;
 @Ignore
-public class TestPipes extends TestCase {
+public class TestPipes {
   private static final Log LOG =
     LogFactory.getLog(TestPipes.class.getName());
   
@@ -66,7 +69,7 @@ public class TestPipes extends TestCase {
     fs.delete(p, true);
     assertFalse("output not cleaned up", fs.exists(p));
   }
-
+  @Test
   public void testPipes() throws IOException {
     if (System.getProperty("compile.c++") == null) {
       LOG.info("compile.c++ is not defined, so skipping TestPipes");

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

@@ -17,36 +17,42 @@
  */
 package org.apache.hadoop.mapreduce;
 
-import java.io.BufferedReader;
-import java.io.BufferedWriter;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FSDataInputStream;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.NullWritable;
 import org.apache.hadoop.io.Text;
-import org.apache.hadoop.fs.*;
 import org.apache.hadoop.mapred.LocalJobRunner;
 import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
 import org.apache.hadoop.mapreduce.lib.input.FileSplit;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
 import org.apache.hadoop.util.ReflectionUtils;
-
 import org.junit.Test;
-import junit.framework.TestCase;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
 
 /**
  * Stress tests for the LocalJobRunner
  */
-public class TestLocalRunner extends TestCase {
+public class TestLocalRunner {
 
   private static final Log LOG = LogFactory.getLog(TestLocalRunner.class);
 

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

@@ -17,6 +17,23 @@
  */
 package org.apache.hadoop.mapreduce;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.LocatedFileStatus;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.RemoteIterator;
+import org.apache.hadoop.mapred.ClusterMapReduceTestCase;
+import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
+import org.apache.hadoop.mapreduce.tools.CLI;
+import org.apache.hadoop.util.ExitUtil;
+import org.apache.hadoop.util.Tool;
+import org.apache.hadoop.util.ToolRunner;
+import org.codehaus.jettison.json.JSONException;
+import org.codehaus.jettison.json.JSONObject;
+import org.junit.Test;
+
 import java.io.BufferedReader;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -31,23 +48,11 @@ import java.io.PipedOutputStream;
 import java.io.PrintStream;
 import java.util.Arrays;
 
-import org.apache.hadoop.fs.LocatedFileStatus;
+import static org.junit.Assert.assertEquals;
-import org.apache.hadoop.fs.RemoteIterator;
+import static org.junit.Assert.assertFalse;
-import org.codehaus.jettison.json.JSONException;
+import static org.junit.Assert.assertNotNull;
-import org.codehaus.jettison.json.JSONObject;
+import static org.junit.Assert.assertTrue;
-import org.junit.Assert;
+import static org.junit.Assert.fail;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.mapred.ClusterMapReduceTestCase;
-import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
-import org.apache.hadoop.mapreduce.tools.CLI;
-import org.apache.hadoop.util.ExitUtil;
-import org.apache.hadoop.util.Tool;
-import org.apache.hadoop.util.ToolRunner;
 
 /**
  test CLI class. CLI class implemented  the Tool interface. 
@@ -103,7 +108,7 @@ public class TestMRJobClient extends ClusterMapReduceTestCase {
       throw new IOException();
     }
   }
-  
+  @Test
   public void testJobSubmissionSpecsAndFiles() throws Exception {
     Configuration conf = createJobConf();
     Job job = MapReduceTestUtil.createJob(conf, getInputDir(), getOutputDir(),
@@ -127,7 +132,7 @@ public class TestMRJobClient extends ClusterMapReduceTestCase {
   /**
    * main test method
    */
-
+  @Test
   public void testJobClient() throws Exception {
     Configuration conf = createJobConf();
     Job job = runJob(conf);
@@ -180,8 +185,7 @@ public class TestMRJobClient extends ClusterMapReduceTestCase {
 
     runTool(conf, jc, new String[] { "-fail-task", taid.toString() }, out);
     String answer = new String(out.toByteArray(), "UTF-8");
-    Assert
+    assertTrue(answer.contains("Killed task " + taid + " by failing it"));
-      .assertTrue(answer.contains("Killed task " + taid + " by failing it"));
   }
 
   /**
@@ -199,7 +203,7 @@ public class TestMRJobClient extends ClusterMapReduceTestCase {
 
     runTool(conf, jc, new String[] { "-kill-task", taid.toString() }, out);
     String answer = new String(out.toByteArray(), "UTF-8");
-    Assert.assertTrue(answer.contains("Killed task " + taid));
+    assertTrue(answer.contains("Killed task " + taid));
   }
   
   /**
@@ -686,6 +690,7 @@ public class TestMRJobClient extends ClusterMapReduceTestCase {
    * Test -list option displays job name.
    * The name is capped to 20 characters for display.
    */
+  @Test
   public void testJobName() throws Exception {
     Configuration conf = createJobConf();
     CLI jc = createJobClient();

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

@@ -25,8 +25,6 @@ import java.io.Writer;
 import java.util.Arrays;
 import java.util.List;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.FileUtil;
@@ -42,13 +40,16 @@ import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
 import org.apache.hadoop.mapreduce.lib.output.LazyOutputFormat;
 import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
 
 /**
  * A JUnit test to test the Map-Reduce framework's feature to create part
  * files only if there is an explicit output.collect. This helps in preventing
  * 0 byte files
  */
-public class TestMapReduceLazyOutput extends TestCase {
+public class TestMapReduceLazyOutput {
   private static final int NUM_HADOOP_SLAVES = 3;
   private static final int NUM_MAPS_PER_NODE = 2;
   private static final Path INPUT = new Path("/testlazy/input");
@@ -122,7 +123,7 @@ public class TestMapReduceLazyOutput extends TestCase {
     }
   }
 
-
+  @Test
   public void testLazyOutput() throws Exception {
     MiniDFSCluster dfs = null;
     MiniMRCluster mr = null;

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

@@ -27,8 +27,6 @@ import java.io.Writer;
 import java.util.ArrayList;
 import java.util.StringTokenizer;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -43,12 +41,15 @@ import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
 import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
 import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
 
 /**
  * A JUnit test to test the Map-Reduce framework's support for the
  * "mark-reset" functionality in Reduce Values Iterator
  */
-public class TestValueIterReset extends TestCase {
+public class TestValueIterReset {
   private static final int NUM_MAPS = 1;
   private static final int NUM_TESTS = 4;
   private static final int NUM_VALUES = 40;
@@ -518,6 +519,7 @@ public class TestValueIterReset extends TestCase {
     }
   }
 
+  @Test
   public void testValueIterReset() {
     try {
       Configuration conf = new Configuration();

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

@@ -18,6 +18,7 @@
 
 package org.apache.hadoop.mapreduce;
 
+import static org.junit.Assert.assertTrue;
 import static org.mockito.Matchers.any;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
@@ -26,7 +27,6 @@ import static org.mockito.Mockito.doNothing;
 
 import java.io.IOException;
 import java.nio.ByteBuffer;
-import junit.framework.TestCase;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.Text;
@@ -44,8 +44,7 @@ import org.apache.hadoop.yarn.factories.RecordFactory;
 import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider;
 import org.junit.Test;
 
-public class TestYarnClientProtocolProvider extends TestCase {
+public class TestYarnClientProtocolProvider {
-  
   private static final RecordFactory recordFactory = RecordFactoryProvider.
       getRecordFactory(null);
   

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/aggregate/TestMapReduceAggregates.java

@@ -18,22 +18,24 @@
 package org.apache.hadoop.mapreduce.lib.aggregate;
 
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.*;
+import org.apache.hadoop.fs.FSDataOutputStream;
 import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.io.*;
+import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.mapred.Utils;
+import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
 import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
 import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
+import org.junit.Test;
 
-import junit.framework.TestCase;
-import java.io.*;
 import java.text.NumberFormat;
 
-public class TestMapReduceAggregates extends TestCase {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+public class TestMapReduceAggregates {
 
   private static NumberFormat idFormat = NumberFormat.getInstance();
     static {
@@ -41,7 +43,7 @@ public class TestMapReduceAggregates extends TestCase {
       idFormat.setGroupingUsed(false);
   }
 
-
+  @Test
   public void testAggregates() throws Exception {
     launch();
   }
@@ -122,11 +124,4 @@ public class TestMapReduceAggregates extends TestCase {
     fs.delete(OUTPUT_DIR, true);
     fs.delete(INPUT_DIR, true);
   }
-  
-  /**
-   * Launches all the tasks in order.
-   */
-  public static void main(String[] argv) throws Exception {
-    launch();
-  }
 }

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

@@ -19,14 +19,15 @@ package org.apache.hadoop.mapreduce.lib.db;
 
 import java.io.IOException;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.NullWritable;
 import org.apache.hadoop.mapreduce.Job;
+import org.junit.Test;
 
-public class TestDBOutputFormat extends TestCase {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 
+public class TestDBOutputFormat {
   private String[] fieldNames = new String[] { "id", "name", "value" };
   private String[] nullFieldNames = new String[] { null, null, null };
   private String expected = "INSERT INTO hadoop_output " +
@@ -36,6 +37,7 @@ public class TestDBOutputFormat extends TestCase {
   private DBOutputFormat<DBWritable, NullWritable> format 
     = new DBOutputFormat<DBWritable, NullWritable>();
 
+  @Test
   public void testConstructQuery() {
     String actual = format.constructQuery("hadoop_output", fieldNames);
     assertEquals(expected, actual);
@@ -44,6 +46,7 @@ public class TestDBOutputFormat extends TestCase {
     assertEquals(nullExpected, actual);
   }
 
+  @Test
   public void testSetOutput() throws IOException {
     Job job = Job.getInstance(new Configuration());
     DBOutputFormat.setOutput(job, "hadoop_output", fieldNames);

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

@@ -17,15 +17,15 @@
  */
 package org.apache.hadoop.mapreduce.lib.db;
 
-import java.io.IOException;
+import org.junit.Test;
-import java.math.BigDecimal;
+
 import java.sql.SQLException;
-import java.util.ArrayList;
 import java.util.List;
 
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 
-public class TestIntegerSplitter extends TestCase {
+public class TestIntegerSplitter {
   private long [] toLongArray(List<Long> in) {
     long [] out = new long[in.size()];
     for (int i = 0; i < in.size(); i++) {
@@ -70,12 +70,14 @@ public class TestIntegerSplitter extends TestCase {
     }
   }
 
+  @Test
   public void testEvenSplits() throws SQLException {
     List<Long> splits = new IntegerSplitter().split(10, 0, 100);
     long [] expected = { 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 };
     assertLongArrayEquals(expected, toLongArray(splits));
   }
 
+  @Test
   public void testOddSplits() throws SQLException {
     List<Long> splits = new IntegerSplitter().split(10, 0, 95);
     long [] expected = { 0, 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 95 };
@@ -83,12 +85,14 @@ public class TestIntegerSplitter extends TestCase {
 
   }
 
+  @Test
   public void testSingletonSplit() throws SQLException {
     List<Long> splits = new IntegerSplitter().split(1, 5, 5);
     long [] expected = { 5, 5 };
     assertLongArrayEquals(expected, toLongArray(splits));
   }
 
+  @Test
   public void testSingletonSplit2() throws SQLException {
     // Same test, but overly-high numSplits
     List<Long> splits = new IntegerSplitter().split(5, 5, 5);
@@ -96,6 +100,7 @@ public class TestIntegerSplitter extends TestCase {
     assertLongArrayEquals(expected, toLongArray(splits));
   }
 
+  @Test
   public void testTooManySplits() throws SQLException {
     List<Long> splits = new IntegerSplitter().split(5, 3, 5);
     long [] expected = { 3, 4, 5 };

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

@@ -17,15 +17,16 @@
  */
 package org.apache.hadoop.mapreduce.lib.db;
 
-import java.io.IOException;
+import org.junit.Test;
+
 import java.math.BigDecimal;
 import java.sql.SQLException;
-import java.util.ArrayList;
 import java.util.List;
 
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 
-public class TestTextSplitter extends TestCase {
+public class TestTextSplitter {
 
   public String formatArray(Object [] ar) {
     StringBuilder sb = new StringBuilder();
@@ -62,48 +63,56 @@ public class TestTextSplitter extends TestCase {
     }
   }
 
+  @Test
   public void testStringConvertEmpty() {
     TextSplitter splitter = new TextSplitter();
     BigDecimal emptyBigDec = splitter.stringToBigDecimal("");
     assertEquals(BigDecimal.ZERO, emptyBigDec);
   }
 
+  @Test
   public void testBigDecConvertEmpty() {
     TextSplitter splitter = new TextSplitter();
     String emptyStr = splitter.bigDecimalToString(BigDecimal.ZERO);
     assertEquals("", emptyStr);
   }
 
+  @Test
   public void testConvertA() {
     TextSplitter splitter = new TextSplitter();
     String out = splitter.bigDecimalToString(splitter.stringToBigDecimal("A"));
     assertEquals("A", out);
   }
 
+  @Test
   public void testConvertZ() {
     TextSplitter splitter = new TextSplitter();
     String out = splitter.bigDecimalToString(splitter.stringToBigDecimal("Z"));
     assertEquals("Z", out);
   }
 
+  @Test
   public void testConvertThreeChars() {
     TextSplitter splitter = new TextSplitter();
     String out = splitter.bigDecimalToString(splitter.stringToBigDecimal("abc"));
     assertEquals("abc", out);
   }
 
+  @Test
   public void testConvertStr() {
     TextSplitter splitter = new TextSplitter();
     String out = splitter.bigDecimalToString(splitter.stringToBigDecimal("big str"));
     assertEquals("big str", out);
   }
 
+  @Test
   public void testConvertChomped() {
     TextSplitter splitter = new TextSplitter();
     String out = splitter.bigDecimalToString(splitter.stringToBigDecimal("AVeryLongStringIndeed"));
     assertEquals("AVeryLon", out);
   }
 
+  @Test
   public void testAlphabetSplit() throws SQLException {
     // This should give us 25 splits, one per letter.
     TextSplitter splitter = new TextSplitter();
@@ -113,6 +122,7 @@ public class TestTextSplitter extends TestCase {
     assertArrayEquals(expected, splits.toArray(new String [0]));
   }
 
+  @Test
   public void testCommonPrefix() throws SQLException {
     // Splits between 'Hand' and 'Hardy'
     TextSplitter splitter = new TextSplitter();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/fieldsel/TestMRFieldSelection.java

@@ -18,15 +18,19 @@
 package org.apache.hadoop.mapreduce.lib.fieldsel;
 
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.*;
+import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.io.*;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil;
+import org.junit.Test;
 
-import junit.framework.TestCase;
 import java.text.NumberFormat;
 
-public class TestMRFieldSelection extends TestCase {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+public class TestMRFieldSelection {
 
 private static NumberFormat idFormat = NumberFormat.getInstance();
   static {
@@ -34,6 +38,7 @@ private static NumberFormat idFormat = NumberFormat.getInstance();
     idFormat.setGroupingUsed(false);
   }
 
+  @Test
   public void testFieldSelection() throws Exception {
     launch();
   }
@@ -114,11 +119,4 @@ private static NumberFormat idFormat = NumberFormat.getInstance();
     System.out.println("ExpectedData:");
     System.out.println(expectedOutput.toString());
   }
-  
-  /**
-   * Launches all the tasks in order.
-   */
-  public static void main(String[] argv) throws Exception {
-    launch();
-  }
 }

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

@@ -18,11 +18,12 @@
 
 package org.apache.hadoop.mapreduce.lib.input;
 
-import java.io.IOException;
+import org.apache.hadoop.fs.FileSystem;
-import java.util.Random;
+import org.apache.hadoop.fs.Path;
-
+import org.apache.hadoop.io.BytesWritable;
-import org.apache.hadoop.fs.*;
+import org.apache.hadoop.io.DataInputBuffer;
-import org.apache.hadoop.io.*;
+import org.apache.hadoop.io.SequenceFile;
+import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.InputFormat;
 import org.apache.hadoop.mapreduce.InputSplit;
 import org.apache.hadoop.mapreduce.Job;
@@ -31,12 +32,18 @@ import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.task.MapContextImpl;
+import org.junit.Test;
 
-import junit.framework.TestCase;
+import java.io.IOException;
+import java.util.Random;
 
-public class TestMRSequenceFileAsBinaryInputFormat extends TestCase {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+public class TestMRSequenceFileAsBinaryInputFormat {
   private static final int RECORDS = 10000;
 
+  @Test
   public void testBinary() throws IOException, InterruptedException {
     Job job = Job.getInstance();
     FileSystem fs = FileSystem.getLocal(job.getConfiguration());

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

@@ -18,11 +18,13 @@
 
 package org.apache.hadoop.mapreduce.lib.input;
 
-import java.util.*;
+import org.apache.hadoop.conf.Configuration;
-import junit.framework.TestCase;
+import org.apache.hadoop.fs.FileSystem;
-
+import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.fs.*;
+import org.apache.hadoop.io.IntWritable;
-import org.apache.hadoop.io.*;
+import org.apache.hadoop.io.LongWritable;
+import org.apache.hadoop.io.SequenceFile;
+import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.InputFormat;
 import org.apache.hadoop.mapreduce.InputSplit;
 import org.apache.hadoop.mapreduce.Job;
@@ -31,12 +33,19 @@ import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.task.MapContextImpl;
-import org.apache.hadoop.conf.*;
+import org.junit.Test;
 
-public class TestMRSequenceFileAsTextInputFormat extends TestCase {
+import java.util.BitSet;
+import java.util.Random;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+public class TestMRSequenceFileAsTextInputFormat {
   private static int MAX_LENGTH = 10000;
   private static Configuration conf = new Configuration();
 
+  @Test
   public void testFormat() throws Exception {
     Job job = Job.getInstance(conf);
     FileSystem fs = FileSystem.getLocal(conf);
@@ -112,8 +121,4 @@ public class TestMRSequenceFileAsTextInputFormat extends TestCase {
 
     }
   }
-
-  public static void main(String[] args) throws Exception {
-    new TestMRSequenceFileAsTextInputFormat().testFormat();
-  }
 }

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

@@ -18,14 +18,14 @@
 
 package org.apache.hadoop.mapreduce.lib.input;
 
-import java.io.*;
+import org.apache.commons.logging.Log;
-import java.util.*;
+import org.apache.commons.logging.LogFactory;
-import junit.framework.TestCase;
+import org.apache.hadoop.conf.Configuration;
-
+import org.apache.hadoop.fs.FileSystem;
-import org.apache.commons.logging.*;
+import org.apache.hadoop.fs.Path;
-
+import org.apache.hadoop.io.BytesWritable;
-import org.apache.hadoop.fs.*;
+import org.apache.hadoop.io.SequenceFile;
-import org.apache.hadoop.io.*;
+import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.InputFormat;
 import org.apache.hadoop.mapreduce.InputSplit;
 import org.apache.hadoop.mapreduce.Job;
@@ -34,9 +34,14 @@ import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.task.MapContextImpl;
-import org.apache.hadoop.conf.*;
+import org.junit.Test;
 
-public class TestMRSequenceFileInputFilter extends TestCase {
+import java.io.IOException;
+import java.util.Random;
+
+import static org.junit.Assert.assertEquals;
+
+public class TestMRSequenceFileInputFilter {
   private static final Log LOG =
     LogFactory.getLog(TestMRSequenceFileInputFilter.class.getName());
 
@@ -114,6 +119,7 @@ public class TestMRSequenceFileInputFilter extends TestCase {
     return count;
   }
 
+  @Test
   public void testRegexFilter() throws Exception {
     // set the filter class
     LOG.info("Testing Regex Filter with patter: \\A10*");
@@ -138,6 +144,7 @@ public class TestMRSequenceFileInputFilter extends TestCase {
     fs.delete(inDir, true);
   }
 
+  @Test
   public void testPercentFilter() throws Exception {
     LOG.info("Testing Percent Filter with frequency: 1000");
     // set the filter class
@@ -166,6 +173,7 @@ public class TestMRSequenceFileInputFilter extends TestCase {
     fs.delete(inDir, true);
   }
 
+  @Test
   public void testMD5Filter() throws Exception {
     // set the filter class
     LOG.info("Testing MD5 Filter with frequency: 1000");
@@ -187,9 +195,4 @@ public class TestMRSequenceFileInputFilter extends TestCase {
     // clean up
     fs.delete(inDir, true);
   }
-
-  public static void main(String[] args) throws Exception {
-    TestMRSequenceFileInputFilter filter = new TestMRSequenceFileInputFilter();
-    filter.testRegexFilter();
-  }
 }

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

@@ -18,17 +18,28 @@
 
 package org.apache.hadoop.mapreduce.lib.input;
 
-import java.io.*;
-import java.util.*;
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.*;
+import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.io.*;
+import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.mapreduce.*;
+import org.apache.hadoop.io.LongWritable;
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.mapreduce.InputSplit;
+import org.apache.hadoop.mapreduce.Job;
+import org.apache.hadoop.mapreduce.MapContext;
+import org.apache.hadoop.mapreduce.MapReduceTestUtil;
+import org.apache.hadoop.mapreduce.RecordReader;
+import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.task.MapContextImpl;
+import org.junit.Test;
 
-public class TestNLineInputFormat extends TestCase {
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+public class TestNLineInputFormat {
   private static int MAX_LENGTH = 200;
   
   private static Configuration conf = new Configuration();
@@ -46,6 +57,7 @@ public class TestNLineInputFormat extends TestCase {
     new Path(new Path(System.getProperty("test.build.data", "."), "data"),
              "TestNLineInputFormat");
 
+  @Test
   public void testFormat() throws Exception {
     Job job = Job.getInstance(conf);
     Path file = new Path(workDir, "test.txt");
@@ -116,8 +128,4 @@ public class TestNLineInputFormat extends TestCase {
       }
     }
   }
-  
-  public static void main(String[] args) throws Exception {
-    new TestNLineInputFormat().testFormat();
-  }
 }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/join/TestJoinDatamerge.java

@@ -19,11 +19,6 @@ package org.apache.hadoop.mapreduce.lib.join;
 
 import java.io.IOException;
 
-import junit.framework.Test;
-import junit.framework.TestCase;
-import junit.framework.TestSuite;
-import junit.extensions.TestSetup;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.Path;
@@ -37,23 +32,31 @@ import org.apache.hadoop.mapreduce.*;
 import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;
 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
 import org.apache.hadoop.mapreduce.lib.output.SequenceFileOutputFormat;
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
-public class TestJoinDatamerge extends TestCase {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class TestJoinDatamerge {
 
   private static MiniDFSCluster cluster = null;
-  public static Test suite() {
+
-    TestSetup setup = new TestSetup(new TestSuite(TestJoinDatamerge.class)) {
+  @BeforeClass
-      protected void setUp() throws Exception {
+  public static void setUp() throws Exception {
-        Configuration conf = new Configuration();
+    Configuration conf = new Configuration();
-        cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
+    cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
-      }
+  }
-      protected void tearDown() throws Exception {
+
-        if (cluster != null) {
+  @AfterClass
-          cluster.shutdown();
+  public static void tearDown() throws Exception {
-        }
+    if (cluster != null) {
-      }
+      cluster.shutdown();
-    };
+    }
-    return setup;
   }
 
   private static SequenceFile.Writer[] createWriters(Path testdir,
@@ -272,10 +275,12 @@ public class TestJoinDatamerge extends TestCase {
     base.getFileSystem(conf).delete(base, true);
   }
 
+  @Test
   public void testSimpleInnerJoin() throws Exception {
     joinAs("inner", InnerJoinMapChecker.class, InnerJoinReduceChecker.class);
   }
 
+  @Test
   public void testSimpleOuterJoin() throws Exception {
     joinAs("outer", OuterJoinMapChecker.class, OuterJoinReduceChecker.class);
   }
@@ -323,10 +328,12 @@ public class TestJoinDatamerge extends TestCase {
     return product;
   }
 
+  @Test
   public void testSimpleOverride() throws Exception {
     joinAs("override", OverrideMapChecker.class, OverrideReduceChecker.class);
   }
 
+  @Test
   public void testNestedJoin() throws Exception {
     // outer(inner(S1,...,Sn),outer(S1,...Sn))
     final int SOURCES = 3;
@@ -422,6 +429,7 @@ public class TestJoinDatamerge extends TestCase {
 
   }
 
+  @Test
   public void testEmptyJoin() throws Exception {
     Configuration conf = new Configuration();
     Path base = cluster.getFileSystem().makeQualified(new Path("/empty"));

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/join/TestJoinProperties.java

@@ -20,11 +20,6 @@ package org.apache.hadoop.mapreduce.lib.join;
 import java.io.IOException;
 import java.util.List;
 
-import junit.framework.Test;
-import junit.framework.TestCase;
-import junit.framework.TestSuite;
-import junit.extensions.TestSetup;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
@@ -36,8 +31,14 @@ import org.apache.hadoop.io.WritableComparable;
 import org.apache.hadoop.mapreduce.*;
 import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;
 import org.apache.hadoop.mapreduce.task.MapContextImpl;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
-public class TestJoinProperties extends TestCase {
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class TestJoinProperties {
 
   private static MiniDFSCluster cluster = null;
   final static int SOURCES = 3;
@@ -46,21 +47,19 @@ public class TestJoinProperties extends TestCase {
   static Path[] src;
   static Path base;
 
-  public static Test suite() {
+  @BeforeClass
-    TestSetup setup = new TestSetup(new TestSuite(TestJoinProperties.class)) {
+  public static void setUp() throws Exception {
-      protected void setUp() throws Exception {
+    Configuration conf = new Configuration();
-        Configuration conf = new Configuration();
+    cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
-        cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
+    base = cluster.getFileSystem().makeQualified(new Path("/nested"));
-        base = cluster.getFileSystem().makeQualified(new Path("/nested"));
+    src = generateSources(conf);
-        src = generateSources(conf);
+  }
-      }
+
-      protected void tearDown() throws Exception {
+  @AfterClass
-        if (cluster != null) {
+  public static void tearDown() throws Exception {
-          cluster.shutdown();
+    if (cluster != null) {
-        }
+      cluster.shutdown();
-      }
+    }
-    };
-    return setup;
   }
 
   // Sources from 0 to srcs-2 have IntWritable key and IntWritable value
@@ -233,6 +232,7 @@ public class TestJoinProperties extends TestCase {
   }
 
   // outer(outer(A, B), C) == outer(A,outer(B, C)) == outer(A, B, C)
+  @Test
   public void testOuterAssociativity() throws Exception {
     Configuration conf = new Configuration();
     testExpr1(conf, "outer", TestType.OUTER_ASSOCIATIVITY, 33);
@@ -241,6 +241,7 @@ public class TestJoinProperties extends TestCase {
   }
  
   // inner(inner(A, B), C) == inner(A,inner(B, C)) == inner(A, B, C)
+  @Test
   public void testInnerAssociativity() throws Exception {
     Configuration conf = new Configuration();
     testExpr1(conf, "inner", TestType.INNER_ASSOCIATIVITY, 2);
@@ -249,6 +250,7 @@ public class TestJoinProperties extends TestCase {
   }
 
   // override(inner(A, B), A) == A
+  @Test
   public void testIdentity() throws Exception {
     Configuration conf = new Configuration();
     testExpr4(conf);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/join/TestJoinTupleWritable.java

@@ -24,8 +24,6 @@ import java.io.DataOutputStream;
 import java.util.Arrays;
 import java.util.Random;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.io.BooleanWritable;
 import org.apache.hadoop.io.BytesWritable;
 import org.apache.hadoop.io.FloatWritable;
@@ -33,8 +31,13 @@ import org.apache.hadoop.io.IntWritable;
 import org.apache.hadoop.io.LongWritable;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.io.Writable;
+import org.junit.Test;
 
-public class TestJoinTupleWritable extends TestCase {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class TestJoinTupleWritable {
 
   private TupleWritable makeTuple(Writable[] writs) {
     Writable[] sub1 = { writs[1], writs[2] };
@@ -97,6 +100,7 @@ public class TestJoinTupleWritable extends TestCase {
     return i;
   }
 
+  @Test
   public void testIterable() throws Exception {
     Random r = new Random();
     Writable[] writs = {
@@ -118,6 +122,7 @@ public class TestJoinTupleWritable extends TestCase {
     verifIter(writs, t, 0);
   }
 
+  @Test
   public void testNestedIterable() throws Exception {
     Random r = new Random();
     Writable[] writs = {
@@ -136,6 +141,7 @@ public class TestJoinTupleWritable extends TestCase {
     assertTrue("Bad count", writs.length == verifIter(writs, sTuple, 0));
   }
 
+  @Test
   public void testWritable() throws Exception {
     Random r = new Random();
     Writable[] writs = {
@@ -159,6 +165,7 @@ public class TestJoinTupleWritable extends TestCase {
     assertTrue("Failed to write/read tuple", sTuple.equals(dTuple));
   }
 
+  @Test
   public void testWideWritable() throws Exception {
     Writable[] manyWrits = makeRandomWritables(131);
     
@@ -179,6 +186,7 @@ public class TestJoinTupleWritable extends TestCase {
       -1, in.read());
   }
 
+  @Test
   public void testWideWritable2() throws Exception {
     Writable[] manyWrits = makeRandomWritables(71);
     
@@ -201,6 +209,7 @@ public class TestJoinTupleWritable extends TestCase {
    * Tests a tuple writable with more than 64 values and the values set written
    * spread far apart.
    */
+  @Test
   public void testSparseWideWritable() throws Exception {
     Writable[] manyWrits = makeRandomWritables(131);
     
@@ -221,6 +230,7 @@ public class TestJoinTupleWritable extends TestCase {
       -1, in.read());
   }
 
+  @Test
   public void testWideTuple() throws Exception {
     Text emptyText = new Text("Should be empty");
     Writable[] values = new Writable[64];
@@ -242,6 +252,7 @@ public class TestJoinTupleWritable extends TestCase {
     }
   }
 
+  @Test
   public void testWideTuple2() throws Exception {
     Text emptyText = new Text("Should be empty");
     Writable[] values = new Writable[64];
@@ -266,6 +277,7 @@ public class TestJoinTupleWritable extends TestCase {
   /**
    * Tests that we can write more than 64 values.
    */
+  @Test
   public void testWideTupleBoundary() throws Exception {
     Text emptyText = new Text("Should not be set written");
     Writable[] values = new Writable[65];

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/join/TestWrappedRRClassloader.java

@@ -17,23 +17,32 @@
  */
 package org.apache.hadoop.mapreduce.lib.join;
 
-import junit.framework.TestCase;
-
 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.mapreduce.*;
+import org.apache.hadoop.mapreduce.InputSplit;
+import org.apache.hadoop.mapreduce.Job;
+import org.apache.hadoop.mapreduce.MRJobConfig;
+import org.apache.hadoop.mapreduce.MapReduceTestUtil;
 import org.apache.hadoop.mapreduce.MapReduceTestUtil.Fake_RR;
+import org.apache.hadoop.mapreduce.RecordReader;
+import org.apache.hadoop.mapreduce.TaskAttemptContext;
+import org.apache.hadoop.mapreduce.TaskAttemptID;
+import org.apache.hadoop.mapreduce.TaskType;
 import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl;
+import org.junit.Test;
 
-public class TestWrappedRRClassloader extends TestCase {
+import static org.junit.Assert.assertTrue;
+
+public class TestWrappedRRClassloader {
   /**
    * Tests the class loader set by 
    * {@link Configuration#setClassLoader(ClassLoader)}
    * is inherited by any {@link WrappedRecordReader}s created by
    * {@link CompositeRecordReader}
    */
+  @Test
   public void testClassLoader() throws Exception {
     Configuration conf = new Configuration();
     Fake_ClassLoader classLoader = new Fake_ClassLoader();

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

@@ -18,12 +18,17 @@
 
 package org.apache.hadoop.mapreduce.lib.output;
 
-import java.io.IOException;
+import org.apache.commons.logging.Log;
-import java.util.Random;
+import org.apache.commons.logging.LogFactory;
-
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.*;
+import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.io.*;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.BooleanWritable;
+import org.apache.hadoop.io.BytesWritable;
+import org.apache.hadoop.io.DataOutputBuffer;
+import org.apache.hadoop.io.DoubleWritable;
+import org.apache.hadoop.io.FloatWritable;
+import org.apache.hadoop.io.IntWritable;
 import org.apache.hadoop.io.SequenceFile.CompressionType;
 import org.apache.hadoop.mapred.InvalidJobConfException;
 import org.apache.hadoop.mapreduce.InputFormat;
@@ -38,16 +43,22 @@ import org.apache.hadoop.mapreduce.RecordWriter;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;
 import org.apache.hadoop.mapreduce.task.MapContextImpl;
+import org.junit.Test;
 
-import junit.framework.TestCase;
+import java.io.IOException;
-import org.apache.commons.logging.*;
+import java.util.Random;
 
-public class TestMRSequenceFileAsBinaryOutputFormat extends TestCase {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+public class TestMRSequenceFileAsBinaryOutputFormat {
   private static final Log LOG =
     LogFactory.getLog(TestMRSequenceFileAsBinaryOutputFormat.class.getName());
 
   private static final int RECORDS = 10000;
 
+  @Test
   public void testBinary() throws IOException, InterruptedException {
     Configuration conf = new Configuration();
     Job job = Job.getInstance(conf);
@@ -144,6 +155,7 @@ public class TestMRSequenceFileAsBinaryOutputFormat extends TestCase {
     assertEquals("Some records not found", RECORDS, count);
   }
 
+  @Test
   public void testSequenceOutputClassDefaultsToMapRedOutputClass()
          throws IOException {
     Job job = Job.getInstance();
@@ -172,6 +184,7 @@ public class TestMRSequenceFileAsBinaryOutputFormat extends TestCase {
       SequenceFileAsBinaryOutputFormat.getSequenceFileOutputValueClass(job));
   }
 
+  @Test
   public void testcheckOutputSpecsForbidRecordCompression()
       throws IOException {
     Job job = Job.getInstance();

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

@@ -22,11 +22,14 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.BinaryComparable;
 import org.apache.hadoop.io.BytesWritable;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.junit.Test;
 
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
-public class TestBinaryPartitioner extends TestCase {
+public class TestBinaryPartitioner {
 
+  @Test
   public void testDefaultOffsets() {
     Configuration conf = new Configuration();
     BinaryPartitioner<?> partitioner = 
@@ -51,6 +54,7 @@ public class TestBinaryPartitioner extends TestCase {
     assertTrue(partition1 != partition2);
   }
 
+  @Test
   public void testCustomOffsets() {
     Configuration conf = new Configuration();
     BinaryComparable key1 = new BytesWritable(new byte[] { 1, 2, 3, 4, 5 }); 
@@ -76,6 +80,7 @@ public class TestBinaryPartitioner extends TestCase {
     assertEquals(partition1, partition2);
   }
 
+  @Test
   public void testLowerBound() {
     Configuration conf = new Configuration();
     BinaryPartitioner.setLeftOffset(conf, 0);
@@ -88,6 +93,7 @@ public class TestBinaryPartitioner extends TestCase {
     assertTrue(partition1 != partition2);
   }
 
+  @Test
   public void testUpperBound() {
     Configuration conf = new Configuration();
     BinaryPartitioner.setRightOffset(conf, 4);

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

@@ -19,14 +19,17 @@ package org.apache.hadoop.mapreduce.lib.partition;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.junit.Test;
 
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
-public class TestKeyFieldHelper extends TestCase {
+public class TestKeyFieldHelper {
   private static final Log LOG = LogFactory.getLog(TestKeyFieldHelper.class);
   /**
    * Test is key-field-helper's parse option.
    */
+  @Test
   public void testparseOption() throws Exception {
     KeyFieldHelper helper = new KeyFieldHelper();
     helper.setKeyFieldSeparator("\t");
@@ -212,6 +215,7 @@ public class TestKeyFieldHelper extends TestCase {
   /**
    * Test is key-field-helper's getWordLengths.
    */
+  @Test
   public void testGetWordLengths() throws Exception {
     KeyFieldHelper helper = new KeyFieldHelper();
     helper.setKeyFieldSeparator("\t");
@@ -270,6 +274,7 @@ public class TestKeyFieldHelper extends TestCase {
   /**
    * Test is key-field-helper's getStartOffset/getEndOffset.
    */
+  @Test
   public void testgetStartEndOffset() throws Exception {
     KeyFieldHelper helper = new KeyFieldHelper();
     helper.setKeyFieldSeparator("\t");

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

@@ -19,14 +19,16 @@ package org.apache.hadoop.mapreduce.lib.partition;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.Text;
+import org.junit.Test;
 
-import junit.framework.TestCase;
+import static org.junit.Assert.assertEquals;
 
-public class TestMRKeyFieldBasedPartitioner extends TestCase {
+public class TestMRKeyFieldBasedPartitioner {
 
   /**
    * Test is key-field-based partitioned works with empty key.
    */
+  @Test
   public void testEmptyKey() throws Exception {
     int numReducers = 10;
     KeyFieldBasedPartitioner<Text, Text> kfbp = 

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

@@ -23,8 +23,6 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
 
-import junit.framework.TestCase;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.fs.FileSystem;
@@ -41,8 +39,11 @@ import org.apache.hadoop.io.serializer.JavaSerializationComparator;
 import org.apache.hadoop.io.serializer.Serialization;
 import org.apache.hadoop.io.serializer.WritableSerialization;
 import org.apache.hadoop.mapreduce.MRJobConfig;
+import org.junit.Test;
 
-public class TestTotalOrderPartitioner extends TestCase {
+import static org.junit.Assert.assertEquals;
+
+public class TestTotalOrderPartitioner {
 
   private static final Text[] splitStrings = new Text[] {
     // -inf            // 0
@@ -140,6 +141,7 @@ public class TestTotalOrderPartitioner extends TestCase {
     return p;
   }
 
+  @Test
   public void testTotalOrderWithCustomSerialization() throws Exception {
     TotalOrderPartitioner<String, NullWritable> partitioner =
         new TotalOrderPartitioner<String, NullWritable>();
@@ -165,6 +167,7 @@ public class TestTotalOrderPartitioner extends TestCase {
     }
   }
 
+  @Test
   public void testTotalOrderMemCmp() throws Exception {
     TotalOrderPartitioner<Text,NullWritable> partitioner =
       new TotalOrderPartitioner<Text,NullWritable>();
@@ -184,6 +187,7 @@ public class TestTotalOrderPartitioner extends TestCase {
     }
   }
 
+  @Test
   public void testTotalOrderBinarySearch() throws Exception {
     TotalOrderPartitioner<Text,NullWritable> partitioner =
       new TotalOrderPartitioner<Text,NullWritable>();
@@ -216,6 +220,7 @@ public class TestTotalOrderPartitioner extends TestCase {
     }
   }
 
+  @Test
   public void testTotalOrderCustomComparator() throws Exception {
     TotalOrderPartitioner<Text,NullWritable> partitioner =
       new TotalOrderPartitioner<Text,NullWritable>();

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

@@ -20,8 +20,6 @@ package org.apache.hadoop.mapreduce.util;
 import java.io.File;
 import java.io.IOException;
 
-import junit.framework.TestCase;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
@@ -30,20 +28,27 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.mapreduce.util.MRAsyncDiskService;
+import org.junit.Before;
 import org.junit.Test;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
 /**
  * A test for MRAsyncDiskService.
  */
-public class TestMRAsyncDiskService extends TestCase {
+public class TestMRAsyncDiskService {
 
   public static final Log LOG = LogFactory.getLog(TestMRAsyncDiskService.class);
   
   private static String TEST_ROOT_DIR = new Path(System.getProperty(
       "test.build.data", "/tmp")).toString();
   
-  @Override
+  @Before
-  protected void setUp() {
+  public void setUp() {
     FileUtil.fullyDelete(new File(TEST_ROOT_DIR));
   }
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMiniMRProxyUser.java

@@ -17,7 +17,6 @@
  */
 package org.apache.hadoop.mapreduce.v2;
 
-import junit.framework.TestCase;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.permission.FsPermission;
@@ -29,22 +28,25 @@ import org.apache.hadoop.mapred.MiniMRCluster;
 import org.apache.hadoop.mapred.RunningJob;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.ProxyUsers;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
 
-import java.net.InetAddress;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.io.Writer;
+import java.net.InetAddress;
 import java.security.PrivilegedExceptionAction;
 
-public class TestMiniMRProxyUser extends TestCase {
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+public class TestMiniMRProxyUser {
 
   private MiniDFSCluster dfsCluster = null;
   private MiniMRCluster mrCluster = null;
 
-  protected void setUp() throws Exception {
+  @Before
-    super.setUp();
+  public void setUp() throws Exception {
     if (System.getProperty("hadoop.log.dir") == null) {
       System.setProperty("hadoop.log.dir", "/tmp");
     }
@@ -91,15 +93,14 @@ public class TestMiniMRProxyUser extends TestCase {
     return mrCluster.createJobConf();
   }
   
-  @Override
+  @After
-  protected void tearDown() throws Exception {
+  public void tearDown() throws Exception {
     if (mrCluster != null) {
       mrCluster.shutdown();
     }
     if (dfsCluster != null) {
       dfsCluster.shutdown();
     }
-    super.tearDown();
   }
 
   private void mrRun() throws Exception {
@@ -126,10 +127,12 @@ public class TestMiniMRProxyUser extends TestCase {
     assertTrue(runJob.isSuccessful());
   }
 
+  @Test
   public void __testCurrentUser() throws Exception {
    mrRun();
   }  
 
+  @Test
   public void testValidProxyUser() throws Exception {
     UserGroupInformation ugi = UserGroupInformation.createProxyUser("u1", UserGroupInformation.getLoginUser());
     ugi.doAs(new PrivilegedExceptionAction<Void>() {
@@ -142,6 +145,7 @@ public class TestMiniMRProxyUser extends TestCase {
     });
   }
 
+  @Test
   public void ___testInvalidProxyUser() throws Exception {
     UserGroupInformation ugi = UserGroupInformation.createProxyUser("u2", UserGroupInformation.getLoginUser());
     ugi.doAs(new PrivilegedExceptionAction<Void>() {

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestNonExistentJob.java

@@ -17,7 +17,6 @@
  */
 package org.apache.hadoop.mapreduce.v2;
 
-import junit.framework.TestCase;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.permission.FsPermission;
@@ -28,17 +27,22 @@ import org.apache.hadoop.mapred.JobID;
 import org.apache.hadoop.mapred.MiniMRCluster;
 import org.apache.hadoop.mapred.RunningJob;
 import org.apache.hadoop.security.authorize.ProxyUsers;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
 
 import java.io.IOException;
 import java.net.InetAddress;
 
-public class TestNonExistentJob extends TestCase {
+import static org.junit.Assert.assertNull;
+
+public class TestNonExistentJob {
 
   private MiniDFSCluster dfsCluster = null;
   private MiniMRCluster mrCluster = null;
 
-  protected void setUp() throws Exception {
+  @Before
-    super.setUp();
+  public void setUp() throws Exception {
     if (System.getProperty("hadoop.log.dir") == null) {
       System.setProperty("hadoop.log.dir", "/tmp");
     }
@@ -78,17 +82,17 @@ public class TestNonExistentJob extends TestCase {
     return mrCluster.createJobConf();
   }
 
-  @Override
+  @After
-  protected void tearDown() throws Exception {
+  public void tearDown() throws Exception {
     if (mrCluster != null) {
       mrCluster.shutdown();
     }
     if (dfsCluster != null) {
       dfsCluster.shutdown();
     }
-    super.tearDown();
   }
 
+  @Test
   public void testGetInvalidJob() throws Exception {
     RunningJob runJob = new JobClient(getJobConf()).getJob(JobID.forName("job_0_0"));
     assertNull(runJob);

hadoop-tools/hadoop-streaming/src/test/java/org/apache/hadoop/streaming/TestStreamingBadRecords.java

@@ -42,6 +42,11 @@ import org.apache.hadoop.mapred.RunningJob;
 import org.apache.hadoop.mapred.SkipBadRecords;
 import org.apache.hadoop.mapred.Utils;
 import org.apache.hadoop.mapreduce.server.jobtracker.JTConfig;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 public class TestStreamingBadRecords extends ClusterMapReduceTestCase
 {
@@ -68,7 +73,8 @@ public class TestStreamingBadRecords extends ClusterMapReduceTestCase
     utilTest.redirectIfAntJunit();
   }
 
-  protected void setUp() throws Exception {
+  @Before
+  public void setUp() throws Exception {
     Properties props = new Properties();
     props.setProperty(JTConfig.JT_RETIREJOBS, "false");
     props.setProperty(JTConfig.JT_PERSIST_JOBSTATUS, "false");
@@ -242,6 +248,7 @@ public class TestStreamingBadRecords extends ClusterMapReduceTestCase
   }
   */
 
+  @Test
   public void testNoOp() {
     // Added to avoid warnings when running this disabled test
   }