HADOOP-4759. Adding the testcase file that I forgot to add in the original commit.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/trunk@741195 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -0,0 +1,137 @@
+/**
+ * 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.DataOutputStream;
+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;
+import org.apache.hadoop.hdfs.MiniDFSCluster;
+import org.apache.hadoop.io.IntWritable;
+import org.apache.hadoop.io.LongWritable;
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.mapred.lib.IdentityReducer;
+
+public class TestTaskFail extends TestCase {
+  public static class MapperClass extends MapReduceBase
+  implements Mapper<LongWritable, Text, Text, IntWritable> {
+    String taskid;
+    public void configure(JobConf job) {
+      taskid = job.get("mapred.task.id");
+    }
+    public void map (LongWritable key, Text value, 
+                     OutputCollector<Text, IntWritable> output, 
+                     Reporter reporter) throws IOException {
+      if (taskid.endsWith("_0")) {
+        throw new IOException();
+      } else if (taskid.endsWith("_1")) {
+        System.exit(-1);
+      } 
+    }
+  }
+
+  public RunningJob launchJob(JobConf conf,
+                              Path inDir,
+                              Path outDir,
+                              String input) 
+  throws IOException {
+    // set up the input file system and write input text.
+    FileSystem inFs = inDir.getFileSystem(conf);
+    FileSystem outFs = outDir.getFileSystem(conf);
+    outFs.delete(outDir, true);
+    if (!inFs.mkdirs(inDir)) {
+      throw new IOException("Mkdirs failed to create " + inDir.toString());
+    }
+    {
+      // write input into input file
+      DataOutputStream file = inFs.create(new Path(inDir, "part-0"));
+      file.writeBytes(input);
+      file.close();
+    }
+
+    // configure the mapred Job
+    conf.setMapperClass(MapperClass.class);        
+    conf.setReducerClass(IdentityReducer.class);
+    FileInputFormat.setInputPaths(conf, inDir);
+    FileOutputFormat.setOutputPath(conf, outDir);
+    String TEST_ROOT_DIR = new Path(System.getProperty("test.build.data",
+                                    "/tmp")).toString().replace(' ', '+');
+    conf.set("test.build.data", TEST_ROOT_DIR);
+    // return the RunningJob handle.
+    return new JobClient(conf).submitJob(conf);
+  }
+		  
+  public void testWithDFS() throws IOException {
+    MiniDFSCluster dfs = null;
+    MiniMRCluster mr = null;
+    FileSystem fileSys = null;
+    try {
+      final int taskTrackers = 4;
+
+      Configuration conf = new Configuration();
+      dfs = new MiniDFSCluster(conf, 4, true, null);
+      fileSys = dfs.getFileSystem();
+      mr = new MiniMRCluster(taskTrackers, fileSys.getUri().toString(), 1);
+      JobConf jobConf = mr.createJobConf();
+      final Path inDir = new Path("./input");
+      final Path outDir = new Path("./output");
+      String input = "The quick brown fox\nhas many silly\nred fox sox\n";
+      RunningJob job = null;
+
+      job = launchJob(jobConf, inDir, outDir, input);
+      // wait for the job to finish.
+      while (!job.isComplete());
+      assertEquals(JobStatus.SUCCEEDED, job.getJobState());
+      
+      JobID jobId = job.getID();
+      // construct the task id of first map task
+      TaskAttemptID attemptId = 
+        new TaskAttemptID(new TaskID(jobId, true, 0), 0);
+      TaskInProgress tip = mr.getJobTrackerRunner().getJobTracker().
+                              getTip(attemptId.getTaskID());
+      // this should not be cleanup attempt since the first attempt 
+      // fails with an exception
+      assertTrue(!tip.isCleanupAttempt(attemptId));
+      TaskStatus ts = 
+        mr.getJobTrackerRunner().getJobTracker().getTaskStatus(attemptId);
+      assertTrue(ts != null);
+      assertEquals(TaskStatus.State.FAILED, ts.getRunState());
+      
+      attemptId =  new TaskAttemptID(new TaskID(jobId, true, 0), 1);
+      // this should be cleanup attempt since the second attempt fails
+      // with System.exit
+      assertTrue(tip.isCleanupAttempt(attemptId));
+      ts = mr.getJobTrackerRunner().getJobTracker().getTaskStatus(attemptId);
+      assertTrue(ts != null);
+      assertEquals(TaskStatus.State.FAILED, ts.getRunState());
+
+    } finally {
+      if (dfs != null) { dfs.shutdown(); }
+      if (mr != null) { mr.shutdown(); }
+    }
+  }
+
+  public static void main(String[] argv) throws Exception {
+    TestTaskFail td = new TestTaskFail();
+    td.testWithDFS();
+  }
+}