org.apache.hadoop.mapreduce.lib.reduce.IntSumReducer Java Examples

The following examples show how to use org.apache.hadoop.mapreduce.lib.reduce.IntSumReducer. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: TestSingleElementChain.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
public void testNoChain() throws Exception {
  Path inDir = new Path(localPathRoot, "testing/chain/input");
  Path outDir = new Path(localPathRoot, "testing/chain/output");
  String input = "a\nb\na\n";
  String expectedOutput = "a\t2\nb\t1\n";

  Configuration conf = createJobConf();

  Job job = MapReduceTestUtil.createJob(conf, inDir, outDir, 1, 1, input);
  job.setJobName("chain");

  ChainMapper.addMapper(job, TokenCounterMapper.class, Object.class,
      Text.class, Text.class, IntWritable.class, null);

  ChainReducer.setReducer(job, IntSumReducer.class, Text.class,
      IntWritable.class, Text.class, IntWritable.class, null);

  job.waitForCompletion(true);
  assertTrue("Job failed", job.isSuccessful());
  assertEquals("Outputs doesn't match", expectedOutput, MapReduceTestUtil
      .readOutput(outDir, conf));
}
Example #2
Source File: TestSingleElementChain.java    From big-c with Apache License 2.0 6 votes vote down vote up 
public void testNoChain() throws Exception {
  Path inDir = new Path(localPathRoot, "testing/chain/input");
  Path outDir = new Path(localPathRoot, "testing/chain/output");
  String input = "a\nb\na\n";
  String expectedOutput = "a\t2\nb\t1\n";

  Configuration conf = createJobConf();

  Job job = MapReduceTestUtil.createJob(conf, inDir, outDir, 1, 1, input);
  job.setJobName("chain");

  ChainMapper.addMapper(job, TokenCounterMapper.class, Object.class,
      Text.class, Text.class, IntWritable.class, null);

  ChainReducer.setReducer(job, IntSumReducer.class, Text.class,
      IntWritable.class, Text.class, IntWritable.class, null);

  job.waitForCompletion(true);
  assertTrue("Job failed", job.isSuccessful());
  assertEquals("Outputs doesn't match", expectedOutput, MapReduceTestUtil
      .readOutput(outDir, conf));
}
Example #3
Source File: MultiFileWordCount.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

    if(args.length < 2) {
      printUsage();
      return 2;
    }

    Job job = Job.getInstance(getConf());
    job.setJobName("MultiFileWordCount");
    job.setJarByClass(MultiFileWordCount.class);

    //set the InputFormat of the job to our InputFormat
    job.setInputFormatClass(MyInputFormat.class);
    
    // the keys are words (strings)
    job.setOutputKeyClass(Text.class);
    // the values are counts (ints)
    job.setOutputValueClass(IntWritable.class);

    //use the defined mapper
    job.setMapperClass(MapClass.class);
    //use the WordCount Reducer
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    FileInputFormat.addInputPaths(job, args[0]);
    FileOutputFormat.setOutputPath(job, new Path(args[1]));

    return job.waitForCompletion(true) ? 0 : 1;
  }
Example #4
Source File: BusyAirports.java    From gemfirexd-oss with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

    GfxdDataSerializable.initTypes();
    Configuration conf = getConf();

    Path outputPath = new Path(args[0]);
    String hdfsHomeDir = args[1];
    String tableName = args[2];

    outputPath.getFileSystem(conf).delete(outputPath, true);

    conf.set(RowInputFormat.HOME_DIR, hdfsHomeDir);
    conf.set(RowInputFormat.INPUT_TABLE, tableName);
    conf.setBoolean(RowInputFormat.CHECKPOINT_MODE, false);

    Job job = Job.getInstance(conf, "Busy Airport Count");

    job.setInputFormatClass(RowInputFormat.class);

    // configure mapper and reducer
    job.setMapperClass(SampleMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    // configure output
    TextOutputFormat.setOutputPath(job, outputPath);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

    return job.waitForCompletion(true) ? 0 : 1;
  }
Example #5
Source File: BusyLegs.java    From gemfirexd-oss with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

    GfxdDataSerializable.initTypes();
    Configuration conf = getConf();

    Path outputPath = new Path(args[0]);
    String hdfsHomeDir = args[1];
    String tableName = args[2];

    outputPath.getFileSystem(conf).delete(outputPath, true);

    conf.set(RowInputFormat.HOME_DIR, hdfsHomeDir);
    conf.set(RowInputFormat.INPUT_TABLE, tableName);
    conf.setBoolean(RowInputFormat.CHECKPOINT_MODE, false);

    Job job = Job.getInstance(conf, "Busy Leg Count");

    job.setInputFormatClass(RowInputFormat.class);

    // configure mapper and reducer
    job.setMapperClass(SampleMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    // configure output
    TextOutputFormat.setOutputPath(job, outputPath);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

    return job.waitForCompletion(true) ? 0 : 1;
  }
Example #6
Source File: MultiFileWordCount.java    From big-c with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

    if(args.length < 2) {
      printUsage();
      return 2;
    }

    Job job = Job.getInstance(getConf());
    job.setJobName("MultiFileWordCount");
    job.setJarByClass(MultiFileWordCount.class);

    //set the InputFormat of the job to our InputFormat
    job.setInputFormatClass(MyInputFormat.class);
    
    // the keys are words (strings)
    job.setOutputKeyClass(Text.class);
    // the values are counts (ints)
    job.setOutputValueClass(IntWritable.class);

    //use the defined mapper
    job.setMapperClass(MapClass.class);
    //use the WordCount Reducer
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    FileInputFormat.addInputPaths(job, args[0]);
    FileOutputFormat.setOutputPath(job, new Path(args[1]));

    return job.waitForCompletion(true) ? 0 : 1;
  }
Example #7
Source File: BusyAirports.java    From gemfirexd-oss with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

    GfxdDataSerializable.initTypes();
    Configuration conf = getConf();

    Path outputPath = new Path(args[0]);
    String hdfsHomeDir = args[1];
    String tableName = args[2];

    outputPath.getFileSystem(conf).delete(outputPath, true);

    conf.set(RowInputFormat.HOME_DIR, hdfsHomeDir);
    conf.set(RowInputFormat.INPUT_TABLE, tableName);
    conf.setBoolean(RowInputFormat.CHECKPOINT_MODE, false);

    Job job = Job.getInstance(conf, "Busy Airport Count");

    job.setInputFormatClass(RowInputFormat.class);

    // configure mapper and reducer
    job.setMapperClass(SampleMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    // configure output
    TextOutputFormat.setOutputPath(job, outputPath);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

    return job.waitForCompletion(true) ? 0 : 1;
  }
Example #8
Source File: BusyLegs.java    From gemfirexd-oss with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

    GfxdDataSerializable.initTypes();
    Configuration conf = getConf();

    Path outputPath = new Path(args[0]);
    String hdfsHomeDir = args[1];
    String tableName = args[2];

    outputPath.getFileSystem(conf).delete(outputPath, true);

    conf.set(RowInputFormat.HOME_DIR, hdfsHomeDir);
    conf.set(RowInputFormat.INPUT_TABLE, tableName);
    conf.setBoolean(RowInputFormat.CHECKPOINT_MODE, false);

    Job job = Job.getInstance(conf, "Busy Leg Count");

    job.setInputFormatClass(RowInputFormat.class);

    // configure mapper and reducer
    job.setMapperClass(SampleMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    // configure output
    TextOutputFormat.setOutputPath(job, outputPath);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

    return job.waitForCompletion(true) ? 0 : 1;
  }
Example #9
Source File: TopBusyAirportGemfirexd.java    From gemfirexd-oss with Apache License 2.0 4 votes vote down vote up 
public int run(String[] args) throws Exception {

    GfxdDataSerializable.initTypes();
    Configuration conf = getConf();

    Path outputPath = new Path(args[0]);
    Path intermediateOutputPath = new Path(args[0] + "_int");
    String hdfsHomeDir = args[1];
    String tableName = args[2];

    outputPath.getFileSystem(conf).delete(outputPath, true);
    intermediateOutputPath.getFileSystem(conf).delete(intermediateOutputPath, true);

    conf.set(RowInputFormat.HOME_DIR, hdfsHomeDir);
    conf.set(RowInputFormat.INPUT_TABLE, tableName);
    conf.setBoolean(RowInputFormat.CHECKPOINT_MODE, false);

    Job job = Job.getInstance(conf, "Busy Airport Count");
    job.setJarByClass(TopBusyAirportGemfirexd.class);

    job.setInputFormatClass(RowInputFormat.class);

    // configure mapper and reducer
    job.setMapperClass(SampleMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    // configure output
    TextOutputFormat.setOutputPath(job, intermediateOutputPath);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

    int rc = job.waitForCompletion(true) ? 0 : 1;
    if (rc == 0) {
      Configuration topConf = getConf();

      String gemfirexdUrl = topConf.get("gemfirexd.url", "jdbc:gemfirexd://localhost:1527");
      topConf.set(RowOutputFormat.OUTPUT_URL, gemfirexdUrl);
      topConf.set(RowOutputFormat.OUTPUT_TABLE, "APP.BUSY_AIRPORT");

      Configuration.dumpConfiguration(topConf, new PrintWriter(System.out));

      Job topJob = Job.getInstance(topConf, "Top Busy Airport");

      // We want the task to run on a single VM
      topJob.setNumReduceTasks(1);

      // Set the inputs
      topJob.setInputFormatClass(TextInputFormat.class);
      TextInputFormat.addInputPath(topJob, intermediateOutputPath);

      // Set the mapper and reducer
      topJob.setMapperClass(TopBusyAirportMapper.class);
      topJob.setReducerClass(TopBusyAirportReducer.class);
      topJob.setMapOutputKeyClass(Text.class);
      topJob.setMapOutputValueClass(StringIntPair.class);

      // Set the outputs
      TextOutputFormat.setOutputPath(topJob, outputPath);
      topJob.setOutputFormatClass(RowOutputFormat.class);
      topJob.setOutputKeyClass(Key.class);
      topJob.setOutputValueClass(BusyAirportModel.class);

      rc = topJob.waitForCompletion(true) ? 0 : 1;
    }
    return rc;
  }
Example #10
Source File: TopBusyAirport.java    From gemfirexd-oss with Apache License 2.0 4 votes vote down vote up 
public int run(String[] args) throws Exception {

    GfxdDataSerializable.initTypes();
    Configuration conf = getConf();

    Path outputPath = new Path(args[0]);
    Path intermediateOutputPath = new Path(args[0] + "_int");
    String hdfsHomeDir = args[1];
    String tableName = args[2];

    outputPath.getFileSystem(conf).delete(outputPath, true);
    intermediateOutputPath.getFileSystem(conf).delete(intermediateOutputPath, true);

    conf.set(RowInputFormat.HOME_DIR, hdfsHomeDir);
    conf.set(RowInputFormat.INPUT_TABLE, tableName);
    conf.setBoolean(RowInputFormat.CHECKPOINT_MODE, false);

    Job job = Job.getInstance(conf, "Busy Airport Count");

    job.setInputFormatClass(RowInputFormat.class);

    // configure mapper and reducer
    job.setMapperClass(SampleMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    // Only have one reduce task so that all of the results from mapping are
    // processed in one place.
    job.setNumReduceTasks(1);

    // configure output
    TextOutputFormat.setOutputPath(job, intermediateOutputPath);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

    int rc = job.waitForCompletion(true) ? 0 : 1;
    if (rc == 0) {
      Job topJob = Job.getInstance(getConf(), "Top Busy Airport");

      // We want the task to run on a single VM
      topJob.setNumReduceTasks(1);

      // Set the inputs
      topJob.setInputFormatClass(TextInputFormat.class);
      TextInputFormat.addInputPath(topJob, intermediateOutputPath);

      // Set the mapper and reducer
      topJob.setMapperClass(TopBusyAirportMapper.class);
      topJob.setReducerClass(TopBusyAirportReducer.class);

      // Set the outputs
      TextOutputFormat.setOutputPath(topJob, outputPath);
      topJob.setOutputFormatClass(TextOutputFormat.class);
      topJob.setOutputKeyClass(Text.class);
      topJob.setOutputValueClass(IntWritable.class);

      topJob.setMapOutputKeyClass(Text.class);
      topJob.setMapOutputValueClass(StringIntPair.class);

      rc = topJob.waitForCompletion(true) ? 0 : 1;
    }
    return rc;
  }
Example #11
Source File: TopBusyAirportGemfirexd.java    From gemfirexd-oss with Apache License 2.0 4 votes vote down vote up 
public int run(String[] args) throws Exception {

    GfxdDataSerializable.initTypes();
    Configuration conf = getConf();

    Path outputPath = new Path(args[0]);
    Path intermediateOutputPath = new Path(args[0] + "_int");
    String hdfsHomeDir = args[1];
    String tableName = args[2];

    outputPath.getFileSystem(conf).delete(outputPath, true);
    intermediateOutputPath.getFileSystem(conf).delete(intermediateOutputPath, true);

    conf.set(RowInputFormat.HOME_DIR, hdfsHomeDir);
    conf.set(RowInputFormat.INPUT_TABLE, tableName);
    conf.setBoolean(RowInputFormat.CHECKPOINT_MODE, false);

    Job job = Job.getInstance(conf, "Busy Airport Count");
    job.setJarByClass(TopBusyAirportGemfirexd.class);

    job.setInputFormatClass(RowInputFormat.class);

    // configure mapper and reducer
    job.setMapperClass(SampleMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    // configure output
    TextOutputFormat.setOutputPath(job, intermediateOutputPath);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

    int rc = job.waitForCompletion(true) ? 0 : 1;
    if (rc == 0) {
      Configuration topConf = getConf();

      String gemfirexdUrl = topConf.get("gemfirexd.url", "jdbc:gemfirexd://localhost:1527");
      topConf.set(RowOutputFormat.OUTPUT_URL, gemfirexdUrl);
      topConf.set(RowOutputFormat.OUTPUT_TABLE, "APP.BUSY_AIRPORT");

      Configuration.dumpConfiguration(topConf, new PrintWriter(System.out));

      Job topJob = Job.getInstance(topConf, "Top Busy Airport");

      // We want the task to run on a single VM
      topJob.setNumReduceTasks(1);

      // Set the inputs
      topJob.setInputFormatClass(TextInputFormat.class);
      TextInputFormat.addInputPath(topJob, intermediateOutputPath);

      // Set the mapper and reducer
      topJob.setMapperClass(TopBusyAirportMapper.class);
      topJob.setReducerClass(TopBusyAirportReducer.class);
      topJob.setMapOutputKeyClass(Text.class);
      topJob.setMapOutputValueClass(StringIntPair.class);

      // Set the outputs
      TextOutputFormat.setOutputPath(topJob, outputPath);
      topJob.setOutputFormatClass(RowOutputFormat.class);
      topJob.setOutputKeyClass(Key.class);
      topJob.setOutputValueClass(BusyAirportModel.class);

      rc = topJob.waitForCompletion(true) ? 0 : 1;
    }
    return rc;
  }
Example #12
Source File: TopBusyAirport.java    From gemfirexd-oss with Apache License 2.0 4 votes vote down vote up 
public int run(String[] args) throws Exception {

    GfxdDataSerializable.initTypes();
    Configuration conf = getConf();

    Path outputPath = new Path(args[0]);
    Path intermediateOutputPath = new Path(args[0] + "_int");
    String hdfsHomeDir = args[1];
    String tableName = args[2];

    outputPath.getFileSystem(conf).delete(outputPath, true);
    intermediateOutputPath.getFileSystem(conf).delete(intermediateOutputPath, true);

    conf.set(RowInputFormat.HOME_DIR, hdfsHomeDir);
    conf.set(RowInputFormat.INPUT_TABLE, tableName);
    conf.setBoolean(RowInputFormat.CHECKPOINT_MODE, false);

    Job job = Job.getInstance(conf, "Busy Airport Count");

    job.setInputFormatClass(RowInputFormat.class);

    // configure mapper and reducer
    job.setMapperClass(SampleMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);

    // Only have one reduce task so that all of the results from mapping are
    // processed in one place.
    job.setNumReduceTasks(1);

    // configure output
    TextOutputFormat.setOutputPath(job, intermediateOutputPath);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

    int rc = job.waitForCompletion(true) ? 0 : 1;
    if (rc == 0) {
      Job topJob = Job.getInstance(getConf(), "Top Busy Airport");

      // We want the task to run on a single VM
      topJob.setNumReduceTasks(1);

      // Set the inputs
      topJob.setInputFormatClass(TextInputFormat.class);
      TextInputFormat.addInputPath(topJob, intermediateOutputPath);

      // Set the mapper and reducer
      topJob.setMapperClass(TopBusyAirportMapper.class);
      topJob.setReducerClass(TopBusyAirportReducer.class);

      // Set the outputs
      TextOutputFormat.setOutputPath(topJob, outputPath);
      topJob.setOutputFormatClass(TextOutputFormat.class);
      topJob.setOutputKeyClass(Text.class);
      topJob.setOutputValueClass(IntWritable.class);

      topJob.setMapOutputKeyClass(Text.class);
      topJob.setMapOutputValueClass(StringIntPair.class);

      rc = topJob.waitForCompletion(true) ? 0 : 1;
    }
    return rc;
  }