MAPREDUCE-5800. Use Job#getInstance instead of deprecated constructors. (aajisaka)

hadoop-mapreduce-project/CHANGES.txt

@@ -271,6 +271,9 @@ Release 2.7.0 - UNRELEASED
     MAPREDUCE-6143. add configuration for mapreduce speculative execution in
     MR2 (zxu via rkanter)
 
+    MAPREDUCE-5800. Use Job#getInstance instead of deprecated constructors
+    (aajisaka)
+
   OPTIMIZATIONS
 
     MAPREDUCE-6169. MergeQueue should release reference to the current item 

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

@@ -51,7 +51,7 @@ public class Job extends ControlledJob {
    */
   @SuppressWarnings("unchecked")
   public Job(JobConf jobConf, ArrayList<?> dependingJobs) throws IOException {
-    super(new org.apache.hadoop.mapreduce.Job(jobConf), 
+    super(org.apache.hadoop.mapreduce.Job.getInstance(jobConf),
           (List<ControlledJob>) dependingJobs);
   }
 
@@ -93,7 +93,7 @@ public synchronized JobConf getJobConf() {
    */
   public synchronized void setJobConf(JobConf jobConf) {
     try {
-      super.setJob(new org.apache.hadoop.mapreduce.Job(jobConf));
+      super.setJob(org.apache.hadoop.mapreduce.Job.getInstance(jobConf));
     } catch (IOException ioe) { 
       LOG.info("Exception" + ioe);
     }

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

@@ -73,7 +73,7 @@ public CombineFileInputFormat() {
   public InputSplit[] getSplits(JobConf job, int numSplits) 
     throws IOException {
     List<org.apache.hadoop.mapreduce.InputSplit> newStyleSplits =
-      super.getSplits(new Job(job));
+      super.getSplits(Job.getInstance(job));
     InputSplit[] ret = new InputSplit[newStyleSplits.size()];
     for(int pos = 0; pos < newStyleSplits.size(); ++pos) {
       org.apache.hadoop.mapreduce.lib.input.CombineFileSplit newStyleSplit = 
@@ -129,7 +129,7 @@ public org.apache.hadoop.mapreduce.RecordReader<K, V> createRecordReader(
    * @throws IOException if zero items.
    */
   protected FileStatus[] listStatus(JobConf job) throws IOException {
-    List<FileStatus> result = super.listStatus(new Job(job));
+    List<FileStatus> result = super.listStatus(Job.getInstance(job));
     return result.toArray(new FileStatus[result.size()]);
   }
 

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

@@ -46,7 +46,7 @@ public InputSampler(JobConf conf) {
 
   public static <K,V> void writePartitionFile(JobConf job, Sampler<K,V> sampler)
       throws IOException, ClassNotFoundException, InterruptedException {
-    writePartitionFile(new Job(job), sampler);
+    writePartitionFile(Job.getInstance(job), sampler);
   }
   /**
    * Interface to sample using an {@link org.apache.hadoop.mapred.InputFormat}.

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/db/DBInputFormat.java

@@ -177,7 +177,7 @@ public RecordReader<LongWritable, T> getRecordReader(InputSplit split,
   /** {@inheritDoc} */
   public InputSplit[] getSplits(JobConf job, int chunks) throws IOException {
     List<org.apache.hadoop.mapreduce.InputSplit> newSplits = 
-      super.getSplits(new Job(job));
+      super.getSplits(Job.getInstance(job));
     InputSplit[] ret = new InputSplit[newSplits.size()];
     int i = 0;
     for (org.apache.hadoop.mapreduce.InputSplit s : newSplits) {

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

@@ -120,7 +120,7 @@ public static enum TaskStatusFilter { NONE, KILLED, FAILED, SUCCEEDED, ALL }
    */
   @Deprecated
   public Job() throws IOException {
-    this(new Configuration());
+    this(new JobConf(new Configuration()));
   }
 
   /**
@@ -136,7 +136,7 @@ public Job(Configuration conf) throws IOException {
    */
   @Deprecated
   public Job(Configuration conf, String jobName) throws IOException {
-    this(conf);
+    this(new JobConf(conf));
     setJobName(jobName);
   }
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/aggregate/ValueAggregatorJob.java

@@ -164,7 +164,7 @@ public static Job createValueAggregatorJob(Configuration conf, String args[])
       conf.set(MRJobConfig.JAR, userJarFile);
     }
 
-    Job theJob = new Job(conf);
+    Job theJob = Job.getInstance(conf);
     if (userJarFile == null) {
       theJob.setJarByClass(ValueAggregator.class);
     } 

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

@@ -53,7 +53,7 @@ public class DelegatingInputFormat<K, V> extends InputFormat<K, V> {
   public List<InputSplit> getSplits(JobContext job) 
       throws IOException, InterruptedException {
     Configuration conf = job.getConfiguration();
-    Job jobCopy =new Job(conf);
+    Job jobCopy = Job.getInstance(conf);
     List<InputSplit> splits = new ArrayList<InputSplit>();
     Map<Path, InputFormat> formatMap = 
       MultipleInputs.getInputFormatMap(job);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/jobcontrol/ControlledJob.java

@@ -84,7 +84,7 @@ public ControlledJob(Job job, List<ControlledJob> dependingJobs)
    * @throws IOException
    */
   public ControlledJob(Configuration conf) throws IOException {
-    this(new Job(conf), null);
+    this(Job.getInstance(conf), null);
   }
 	
   @Override

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/join/Parser.java

@@ -323,7 +323,7 @@ public void parse(List<Token> ll, Configuration conf) throws IOException {
     }
 
     private Configuration getConf(Configuration jconf) throws IOException {
-      Job job = new Job(jconf);
+      Job job = Job.getInstance(jconf);
       FileInputFormat.setInputPaths(job, indir);
       return job.getConfiguration();
     }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/MultipleOutputs.java

@@ -503,7 +503,7 @@ private TaskAttemptContext getContext(String nameOutput) throws IOException {
     
     // The following trick leverages the instantiation of a record writer via
     // the job thus supporting arbitrary output formats.
-    Job job = new Job(context.getConfiguration());
+    Job job = Job.getInstance(context.getConfiguration());
     job.setOutputFormatClass(getNamedOutputFormatClass(context, nameOutput));
     job.setOutputKeyClass(getNamedOutputKeyClass(context, nameOutput));
     job.setOutputValueClass(getNamedOutputValueClass(context, nameOutput));

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/InputSampler.java

@@ -348,7 +348,7 @@ public static <K,V> void writePartitionFile(Job job, Sampler<K,V> sampler)
    * Configures a JobConf instance and calls {@link #writePartitionFile}.
    */
   public int run(String[] args) throws Exception {
-    Job job = new Job(getConf());
+    Job job = Job.getInstance(getConf());
     ArrayList<String> otherArgs = new ArrayList<String>();
     Sampler<K,V> sampler = null;
     for(int i=0; i < args.length; ++i) {

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/partition/TotalOrderPartitioner.java

@@ -83,7 +83,7 @@ public void setConf(Configuration conf) {
         ? FileSystem.getLocal(conf)     // assume in DistributedCache
         : partFile.getFileSystem(conf);
 
-      Job job = new Job(conf);
+      Job job = Job.getInstance(conf);
       Class<K> keyClass = (Class<K>)job.getMapOutputKeyClass();
       K[] splitPoints = readPartitions(fs, partFile, keyClass, conf);
       if (splitPoints.length != job.getNumReduceTasks() - 1) {

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

@@ -65,7 +65,7 @@ public Job createJob(Configuration conf) throws IOException {
     }
     conf.setInt(MRJobConfig.NUM_MAPS, numMaps);
 
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
 
     job.setJarByClass(RandomTextWriterJob.class);
     job.setJobName("random-text-writer");

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

@@ -185,7 +185,7 @@ public void launchTest(JobConf conf,
     
     // Launch job with default option for temp dir. 
     // i.e. temp dir is ./tmp 
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     job.addFileToClassPath(APP_JAR);
     job.setJarByClass(TestMiniMRChildTask.class);
     job.setMaxMapAttempts(1); // speed up failures
@@ -537,7 +537,7 @@ void runTestTaskEnv(JobConf conf, Path inDir, Path outDir, boolean oldConfigs)
     conf.set(mapTaskJavaOptsKey, mapTaskJavaOpts);
     conf.set(reduceTaskJavaOptsKey, reduceTaskJavaOpts);
 
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     job.addFileToClassPath(APP_JAR);
     job.setJarByClass(TestMiniMRChildTask.class);
     job.setMaxMapAttempts(1); // speed up failures

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

@@ -187,7 +187,7 @@ private static void createFile(Path inFile, Configuration conf)
   }
 
   public static Job createJob() throws IOException {
-    final Job baseJob = new Job(mrCluster.getConfig());
+    final Job baseJob = Job.getInstance(mrCluster.getConfig());
     baseJob.setOutputKeyClass(Text.class);
     baseJob.setOutputValueClass(IntWritable.class);
     baseJob.setMapperClass(MyMapper.class);

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

@@ -231,8 +231,7 @@ public int run(String[] args) throws Exception {
     conf.setInt(MRJobConfig.MAP_MEMORY_MB, mapMb);
     conf.set(MRJobConfig.MAP_JAVA_OPTS, "-Xmx" + (mapMb - 200) + "m");
 
-    @SuppressWarnings("deprecation")
+    Job job = Job.getInstance(conf);
-    Job job = new Job(conf);
     job.setJarByClass(LargeSorter.class);
     job.setJobName("large-sorter");
     FileOutputFormat.setOutputPath(job, outDir);

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

@@ -195,7 +195,7 @@ public int run(String[] args) throws Exception {
     }
     conf.setInt(MRJobConfig.NUM_MAPS, numMaps);
     
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     
     job.setJarByClass(RandomTextWriter.class);
     job.setJobName("random-text-writer");

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

@@ -261,7 +261,7 @@ public int run(String[] args) throws Exception {
     }
     conf.setInt(MRJobConfig.NUM_MAPS, numMaps);
 
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     
     job.setJarByClass(RandomWriter.class);
     job.setJobName("random-writer");

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

@@ -547,7 +547,7 @@ protected Job runFailingMapperJob()
     myConf.setInt(MRJobConfig.NUM_MAPS, 1);
     myConf.setInt(MRJobConfig.MAP_MAX_ATTEMPTS, 2); //reduce the number of attempts
 
-    Job job = new Job(myConf);
+    Job job = Job.getInstance(myConf);
 
     job.setJarByClass(FailingMapper.class);
     job.setJobName("failmapper");

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/testjar/UserNamePermission.java

@@ -77,7 +77,7 @@ public static void main(String [] args) throws Exception
   {
     Path outDir = new Path("output");
     Configuration conf = new Configuration();
-    Job job = new Job(conf, "user name check"); 
+    Job job = Job.getInstance(conf, "user name check"); 
 			
 			
     job.setJarByClass(UserNamePermission.class);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/BaileyBorweinPlouffe.java

@@ -315,7 +315,7 @@ public void close() {
   /** Create and setup a job */
   private static Job createJob(String name, Configuration conf
       ) throws IOException {
-    final Job job = new Job(conf, NAME + "_" + name);
+    final Job job = Job.getInstance(conf, NAME + "_" + name);
     final Configuration jobconf = job.getConfiguration();
     job.setJarByClass(BaileyBorweinPlouffe.class);
 

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Grep.java

@@ -56,7 +56,7 @@ public int run(String[] args) throws Exception {
     if (args.length == 4)
       conf.set(RegexMapper.GROUP, args[3]);
 
-    Job grepJob = new Job(conf);
+    Job grepJob = Job.getInstance(conf);
     
     try {
       
@@ -77,7 +77,7 @@ public int run(String[] args) throws Exception {
 
       grepJob.waitForCompletion(true);
 
-      Job sortJob = new Job(conf);
+      Job sortJob = Job.getInstance(conf);
       sortJob.setJobName("grep-sort");
       sortJob.setJarByClass(Grep.class);
 

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Join.java

@@ -89,7 +89,7 @@ public int run(String[] args) throws Exception {
        num_reduces = cluster.getTaskTrackers() * 
                        Integer.parseInt(join_reduces);
     }
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     job.setJobName("join");
     job.setJarByClass(Sort.class);
 

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/MultiFileWordCount.java

@@ -229,7 +229,7 @@ public int run(String[] args) throws Exception {
       return 2;
     }
 
-    Job job = new Job(getConf());
+    Job job = Job.getInstance(getConf());
     job.setJobName("MultiFileWordCount");
     job.setJarByClass(MultiFileWordCount.class);
 

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/QuasiMonteCarlo.java

@@ -248,7 +248,7 @@ public void cleanup(Context context) throws IOException {
   public static BigDecimal estimatePi(int numMaps, long numPoints,
       Path tmpDir, Configuration conf
       ) throws IOException, ClassNotFoundException, InterruptedException {
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     //setup job conf
     job.setJobName(QuasiMonteCarlo.class.getSimpleName());
     job.setJarByClass(QuasiMonteCarlo.class);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/RandomTextWriter.java

@@ -195,7 +195,7 @@ public int run(String[] args) throws Exception {
     }
     conf.setInt(MRJobConfig.NUM_MAPS, numMaps);
     
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     
     job.setJarByClass(RandomTextWriter.class);
     job.setJobName("random-text-writer");

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/RandomWriter.java

@@ -261,7 +261,7 @@ public int run(String[] args) throws Exception {
     }
     conf.setInt(MRJobConfig.NUM_MAPS, numMaps);
 
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     
     job.setJarByClass(RandomWriter.class);
     job.setJobName("random-writer");

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/SecondarySort.java

@@ -214,7 +214,7 @@ public static void main(String[] args) throws Exception {
       System.err.println("Usage: secondarysort <in> <out>");
       System.exit(2);
     }
-    Job job = new Job(conf, "secondary sort");
+    Job job = Job.getInstance(conf, "secondary sort");
     job.setJarByClass(SecondarySort.class);
     job.setMapperClass(MapClass.class);
     job.setReducerClass(Reduce.class);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/Sort.java

@@ -132,7 +132,7 @@ public int run(String[] args) throws Exception {
       }
     }
     // Set user-supplied (possibly default) job configs
-    job = new Job(conf);
+    job = Job.getInstance(conf);
     job.setJobName("sorter");
     job.setJarByClass(Sort.class);
 

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/WordCount.java

@@ -72,7 +72,7 @@ public static void main(String[] args) throws Exception {
       System.err.println("Usage: wordcount <in> [<in>...] <out>");
       System.exit(2);
     }
-    Job job = new Job(conf, "word count");
+    Job job = Job.getInstance(conf, "word count");
     job.setJarByClass(WordCount.class);
     job.setMapperClass(TokenizerMapper.class);
     job.setCombinerClass(IntSumReducer.class);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/WordMean.java

@@ -172,8 +172,7 @@ public int run(String[] args) throws Exception {
 
     Configuration conf = getConf();
 
-    @SuppressWarnings("deprecation")
+    Job job = Job.getInstance(conf, "word mean");
-    Job job = new Job(conf, "word mean");
     job.setJarByClass(WordMean.class);
     job.setMapperClass(WordMeanMapper.class);
     job.setCombinerClass(WordMeanReducer.class);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/WordMedian.java

@@ -181,8 +181,7 @@ public int run(String[] args) throws Exception {
     setConf(new Configuration());
     Configuration conf = getConf();
 
-    @SuppressWarnings("deprecation")
+    Job job = Job.getInstance(conf, "word median");
-    Job job = new Job(conf, "word median");
     job.setJarByClass(WordMedian.class);
     job.setMapperClass(WordMedianMapper.class);
     job.setCombinerClass(WordMedianReducer.class);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/WordStandardDeviation.java

@@ -189,8 +189,7 @@ public int run(String[] args) throws Exception {
 
     Configuration conf = getConf();
 
-    @SuppressWarnings("deprecation")
+    Job job = Job.getInstance(conf, "word stddev");
-    Job job = new Job(conf, "word stddev");
     job.setJarByClass(WordStandardDeviation.class);
     job.setMapperClass(WordStandardDeviationMapper.class);
     job.setCombinerClass(WordStandardDeviationReducer.class);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/dancing/DistributedPentomino.java

@@ -198,7 +198,7 @@ public int run(String[] args) throws Exception {
     Path input = new Path(output + "_input");
     FileSystem fileSys = FileSystem.get(conf);
     try {
-      Job job = new Job(conf);
+      Job job = Job.getInstance(conf);
       FileInputFormat.setInputPaths(job, input);
       FileOutputFormat.setOutputPath(job, output);
       job.setJarByClass(PentMap.class);

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/pi/DistSum.java

@@ -432,7 +432,8 @@ private Machine chooseMachine(Configuration conf) throws IOException {
 
   /** Create a job */
   private Job createJob(String name, Summation sigma) throws IOException {
-    final Job job = new Job(getConf(), parameters.remoteDir + "/" + name);
+    final Job job = Job.getInstance(getConf(), parameters.remoteDir + "/" +
+                                    name);
     final Configuration jobconf = job.getConfiguration();
     job.setJarByClass(DistSum.class);
     jobconf.setInt(N_PARTS, parameters.nParts);

hadoop-tools/hadoop-gridmix/src/main/java/org/apache/hadoop/mapred/gridmix/GridmixJob.java

@@ -114,8 +114,8 @@ public Job run() throws IOException {
           String jobId = null == jobdesc.getJobID() 
                          ? "<unknown>" 
                          : jobdesc.getJobID().toString();
-          Job ret = new Job(conf,
+          Job ret = Job.getInstance(conf, nameFormat.get().format("%06d", seq)
-                            nameFormat.get().format("%06d", seq).toString());
+                                          .toString());
           ret.getConfiguration().setInt(GRIDMIX_JOB_SEQ, seq);
 
           ret.getConfiguration().set(Gridmix.ORIGINAL_JOB_ID, jobId);
@@ -343,7 +343,7 @@ protected GridmixJob(final Configuration conf, long submissionMillis,
     try {
       job = this.ugi.doAs(new PrivilegedExceptionAction<Job>() {
         public Job run() throws IOException {
-          Job ret = new Job(conf, name);
+          Job ret = Job.getInstance(conf, name);
           ret.getConfiguration().setInt(GRIDMIX_JOB_SEQ, seq);
           setJobQueue(ret, conf.get(GRIDMIX_DEFAULT_QUEUE));
           return ret;

hadoop-tools/hadoop-gridmix/src/test/java/org/apache/hadoop/mapred/gridmix/TestCompressionEmulationUtils.java

@@ -157,7 +157,7 @@ private static void runDataGenJob(Configuration conf, Path tempDir)
     // get the local job runner
     conf.setInt(MRJobConfig.NUM_MAPS, 1);
     
-    Job job = new Job(conf);
+    Job job = Job.getInstance(conf);
     
     CompressionEmulationUtil.configure(job);
     job.setInputFormatClass(CustomInputFormat.class);

hadoop-tools/hadoop-streaming/src/test/java/org/apache/hadoop/streaming/mapreduce/TestStreamXmlRecordReader.java

@@ -109,7 +109,7 @@ public void createInput() throws IOException {
   @Test
   public void testStreamXmlRecordReader() throws Exception {
 
-    Job job = new Job();
+    Job job = Job.getInstance();
     Configuration conf = job.getConfiguration();
     job.setJarByClass(TestStreamXmlRecordReader.class);
     job.setMapperClass(Mapper.class);