HADOOP-2132. Committing a testcase file that I missed in the original commit of this issue.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/trunk@662976 13f79535-47bb-0310-9956-ffa450edef68

src/test/org/apache/hadoop/mapred/TestKillCompletedJob.java

@@ -0,0 +1,125 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.mapred;
+
+import java.io.*;
+import java.net.*;
+import junit.framework.TestCase;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.dfs.MiniDFSCluster;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.IntWritable;
+import org.apache.hadoop.io.Text;
+
+import org.apache.hadoop.examples.WordCount;
+
+
+/**
+ * A JUnit test to test that killing completed jobs does not move them
+ * to the failed sate - See JIRA HADOOP-2132
+ */
+public class TestKillCompletedJob extends TestCase {
+  
+  
+  static Boolean launchWordCount(String fileSys,
+                                String jobTracker,
+                                JobConf conf,
+                                String input,
+                                int numMaps,
+                                int numReduces) throws IOException {
+    final Path inDir = new Path("/testing/wc/input");
+    final Path outDir = new Path("/testing/wc/output");
+    FileSystem fs = FileSystem.get(URI.create(fileSys), conf);
+    fs.delete(outDir, true);
+    if (!fs.mkdirs(inDir)) {
+      throw new IOException("Mkdirs failed to create " + inDir.toString());
+    }
+    {
+      DataOutputStream file = fs.create(new Path(inDir, "part-0"));
+      file.writeBytes(input);
+      file.close();
+    }
+
+    FileSystem.setDefaultUri(conf, fileSys);
+    conf.set("mapred.job.tracker", jobTracker);
+    conf.setJobName("wordcount");
+    conf.setInputFormat(TextInputFormat.class);
+    
+    // the keys are words (strings)
+    conf.setOutputKeyClass(Text.class);
+    // the values are counts (ints)
+    conf.setOutputValueClass(IntWritable.class);
+    
+    conf.setMapperClass(WordCount.MapClass.class);
+    conf.setCombinerClass(WordCount.Reduce.class);
+    conf.setReducerClass(WordCount.Reduce.class);
+    
+    FileInputFormat.setInputPaths(conf, inDir);
+    FileOutputFormat.setOutputPath(conf, outDir);
+    conf.setNumMapTasks(numMaps);
+    conf.setNumReduceTasks(numReduces);
+
+    RunningJob rj = JobClient.runJob(conf);
+    JobID jobId = rj.getID();
+    
+    // Kill the job after it is successful
+    if (rj.isSuccessful())
+    {
+      System.out.println("Job Id:" + jobId + 
+        " completed successfully. Killing it now");
+      rj.killJob();
+    }
+    
+       
+    return rj.isSuccessful();
+      
+  }
+
+     
+  public void testKillCompJob() throws IOException {
+    String namenode = null;
+    MiniDFSCluster dfs = null;
+    MiniMRCluster mr = null;
+    FileSystem fileSys = null;
+    try {
+      final int taskTrackers = 1;
+
+      Configuration conf = new Configuration();
+      dfs = new MiniDFSCluster(conf, 1, true, null);
+      fileSys = dfs.getFileSystem();
+      namenode = fileSys.getUri().toString();
+      mr = new MiniMRCluster(taskTrackers, namenode, 3);
+      JobConf jobConf = new JobConf();
+    
+      Boolean result;
+      final String jobTrackerName = "localhost:" + mr.getJobTrackerPort();
+      result = launchWordCount(namenode, jobTrackerName, jobConf, 
+                               "Small text\n",
+                               1, 0);
+      assertTrue(result);
+          
+    } finally {
+      if (dfs != null) { dfs.shutdown(); }
+      if (mr != null) { mr.shutdown();
+      }
+    }
+  }
+  
+}