org.apache.hadoop.mapred.lib.LongSumReducer Java Examples

The following examples show how to use org.apache.hadoop.mapred.lib.LongSumReducer. 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: TestFileSystem.java    From RDFS with Apache License 2.0 6 votes vote down vote up 
public static void readTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(READ_DIR, true);

  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);


  FileInputFormat.setInputPaths(job, CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(ReadMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, READ_DIR);
  job.setOutputKeyClass(UTF8.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #2
Source File: TestFileSystem.java    From hadoop-gpu with Apache License 2.0 6 votes vote down vote up 
public static void seekTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(READ_DIR, true);

  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);

  FileInputFormat.setInputPaths(job,CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(SeekMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, READ_DIR);
  job.setOutputKeyClass(UTF8.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #3
Source File: TestFileSystem.java    From hadoop-gpu with Apache License 2.0 6 votes vote down vote up 
public static void readTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(READ_DIR, true);

  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);


  FileInputFormat.setInputPaths(job, CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(ReadMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, READ_DIR);
  job.setOutputKeyClass(UTF8.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #4
Source File: TestFileSystem.java    From hadoop-gpu with Apache License 2.0 6 votes vote down vote up 
public static void writeTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(DATA_DIR, true);
  fs.delete(WRITE_DIR, true);
  
  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);

  FileInputFormat.setInputPaths(job, CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(WriteMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, WRITE_DIR);
  job.setOutputKeyClass(UTF8.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #5
Source File: TestFileSystem.java    From RDFS with Apache License 2.0 6 votes vote down vote up 
public static void seekTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(READ_DIR, true);

  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);

  FileInputFormat.setInputPaths(job,CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(SeekMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, READ_DIR);
  job.setOutputKeyClass(UTF8.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #6
Source File: TestFileSystem.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
public static void writeTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(DATA_DIR, true);
  fs.delete(WRITE_DIR, true);
  
  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);

  FileInputFormat.setInputPaths(job, CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(WriteMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, WRITE_DIR);
  job.setOutputKeyClass(Text.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #7
Source File: TestFileSystem.java    From RDFS with Apache License 2.0 6 votes vote down vote up 
public static void writeTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(DATA_DIR, true);
  fs.delete(WRITE_DIR, true);
  
  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);

  FileInputFormat.setInputPaths(job, CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(WriteMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, WRITE_DIR);
  job.setOutputKeyClass(UTF8.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #8
Source File: TestFileSystem.java    From big-c with Apache License 2.0 6 votes vote down vote up 
public static void seekTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(READ_DIR, true);

  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);

  FileInputFormat.setInputPaths(job,CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(SeekMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, READ_DIR);
  job.setOutputKeyClass(Text.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #9
Source File: TestFileSystem.java    From big-c with Apache License 2.0 6 votes vote down vote up 
public static void readTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(READ_DIR, true);

  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);


  FileInputFormat.setInputPaths(job, CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(ReadMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, READ_DIR);
  job.setOutputKeyClass(Text.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #10
Source File: TestFileSystem.java    From big-c with Apache License 2.0 6 votes vote down vote up 
public static void writeTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(DATA_DIR, true);
  fs.delete(WRITE_DIR, true);
  
  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);

  FileInputFormat.setInputPaths(job, CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(WriteMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, WRITE_DIR);
  job.setOutputKeyClass(Text.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #11
Source File: TestFileSystem.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
public static void seekTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(READ_DIR, true);

  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);

  FileInputFormat.setInputPaths(job,CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(SeekMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, READ_DIR);
  job.setOutputKeyClass(Text.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #12
Source File: TestFileSystem.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
public static void readTest(FileSystem fs, boolean fastCheck)
  throws Exception {

  fs.delete(READ_DIR, true);

  JobConf job = new JobConf(conf, TestFileSystem.class);
  job.setBoolean("fs.test.fastCheck", fastCheck);


  FileInputFormat.setInputPaths(job, CONTROL_DIR);
  job.setInputFormat(SequenceFileInputFormat.class);

  job.setMapperClass(ReadMapper.class);
  job.setReducerClass(LongSumReducer.class);

  FileOutputFormat.setOutputPath(job, READ_DIR);
  job.setOutputKeyClass(Text.class);
  job.setOutputValueClass(LongWritable.class);
  job.setNumReduceTasks(1);
  JobClient.runJob(job);
}
Example #13
Source File: MultiFileWordCount.java    From RDFS with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

    if(args.length < 2) {
      printUsage();
      return 1;
    }

    JobConf job = new JobConf(getConf(), MultiFileWordCount.class);
    job.setJobName("MultiFileWordCount");

    //set the InputFormat of the job to our InputFormat
    job.setInputFormat(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(LongSumReducer.class);
    job.setReducerClass(LongSumReducer.class);

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

    JobClient.runJob(job);
    
    return 0;
  }
Example #14
Source File: MultiFileWordCount.java    From hadoop-book with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

        if (args.length < 2) {
            printUsage();
            return 1;
        }

        JobConf job = new JobConf(getConf(), MultiFileWordCount.class);
        job.setJobName("MultiFileWordCount");

        //set the InputFormat of the job to our InputFormat
        job.setInputFormat(MyInputFormat.class);

        // the keys are words (strings)
        job.setOutputKeyClass(Text.class);
        // the values are counts (ints)
        job.setOutputValueClass(LongWritable.class);

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

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

        JobClient.runJob(job);

        return 0;
    }
Example #15
Source File: MultiFileWordCount.java    From hadoop-gpu with Apache License 2.0 5 votes vote down vote up 
public int run(String[] args) throws Exception {

    if(args.length < 2) {
      printUsage();
      return 1;
    }

    JobConf job = new JobConf(getConf(), MultiFileWordCount.class);
    job.setJobName("MultiFileWordCount");

    //set the InputFormat of the job to our InputFormat
    job.setInputFormat(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(LongSumReducer.class);
    job.setReducerClass(LongSumReducer.class);

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

    JobClient.runJob(job);
    
    return 0;
  }
Example #16
Source File: DBCountPageView.java    From RDFS with Apache License 2.0 4 votes vote down vote up 
@Override
//Usage DBCountPageView [driverClass dburl]
public int run(String[] args) throws Exception {
  
  String driverClassName = DRIVER_CLASS;
  String url = DB_URL;
  
  if(args.length > 1) {
    driverClassName = args[0];
    url = args[1];
  }
  
  initialize(driverClassName, url);

  JobConf job = new JobConf(getConf(), DBCountPageView.class);
      
  job.setJobName("Count Pageviews of URLs");

  job.setMapperClass(PageviewMapper.class);
  job.setCombinerClass(LongSumReducer.class);
  job.setReducerClass(PageviewReducer.class);

  DBConfiguration.configureDB(job, driverClassName, url);
  
  DBInputFormat.setInput(job, AccessRecord.class, "Access"
      , null, "url", AccessFieldNames);

  DBOutputFormat.setOutput(job, "Pageview", PageviewFieldNames);
  
  job.setMapOutputKeyClass(Text.class);
  job.setMapOutputValueClass(LongWritable.class);

  job.setOutputKeyClass(PageviewRecord.class);
  job.setOutputValueClass(NullWritable.class);

  try {
    JobClient.runJob(job);
    
    boolean correct = verify();
    if(!correct) {
      throw new RuntimeException("Evaluation was not correct!");
    }
  } finally {
    shutdown();    
  }
  return 0;
}
Example #17
Source File: DBCountPageView.java    From hadoop-book with Apache License 2.0 4 votes vote down vote up 
@Override
//Usage DBCountPageView [driverClass dburl]
public int run(String[] args) throws Exception {

    String driverClassName = DRIVER_CLASS;
    String url = DB_URL;

    if (args.length > 1) {
        driverClassName = args[0];
        url = args[1];
    }

    initialize(driverClassName, url);

    JobConf job = new JobConf(getConf(), DBCountPageView.class);

    job.setJobName("Count Pageviews of URLs");

    job.setMapperClass(PageviewMapper.class);
    job.setCombinerClass(LongSumReducer.class);
    job.setReducerClass(PageviewReducer.class);

    DBConfiguration.configureDB(job, driverClassName, url);

    DBInputFormat.setInput(job, AccessRecord.class, "Access", null, "url", AccessFieldNames);

    DBOutputFormat.setOutput(job, "Pageview", PageviewFieldNames);

    job.setMapOutputKeyClass(Text.class);
    job.setMapOutputValueClass(LongWritable.class);

    job.setOutputKeyClass(PageviewRecord.class);
    job.setOutputValueClass(NullWritable.class);

    try {
        JobClient.runJob(job);

        boolean correct = verify();
        if (!correct) {
            throw new RuntimeException("Evaluation was not correct!");
        }
    } finally {
        shutdown();
    }
    return 0;
}
Example #18
Source File: Grep.java    From hadoop-book with Apache License 2.0 4 votes vote down vote up 
@Override
public int run(String[] args) throws Exception {
    if (args.length < 3) {
        System.out.println("Grep <inDir> <outDir> <regex> [<group>]");
        ToolRunner.printGenericCommandUsage(System.out);
        return -1;
    }

    Path tempDir =
            new Path("grep-temp-"
            + Integer.toString(new Random().nextInt(Integer.MAX_VALUE)));

    JobConf grepJob = new JobConf(getConf(), Grep.class);

    try {

        grepJob.setJobName("grep-search");

        FileInputFormat.setInputPaths(grepJob, args[0]);

        grepJob.setMapperClass(RegexMapper.class);
        grepJob.set("mapred.mapper.regex", args[2]);
        if (args.length == 4) {
            grepJob.set("mapred.mapper.regex.group", args[3]);
        }

        grepJob.setCombinerClass(LongSumReducer.class);
        grepJob.setReducerClass(LongSumReducer.class);

        FileOutputFormat.setOutputPath(grepJob, tempDir);
        grepJob.setOutputFormat(SequenceFileOutputFormat.class);
        grepJob.setOutputKeyClass(Text.class);
        grepJob.setOutputValueClass(LongWritable.class);

        JobClient.runJob(grepJob);

        JobConf sortJob = new JobConf(getConf(), Grep.class);
        sortJob.setJobName("grep-sort");

        FileInputFormat.setInputPaths(sortJob, tempDir);
        sortJob.setInputFormat(SequenceFileInputFormat.class);

        sortJob.setMapperClass(InverseMapper.class);

        sortJob.setNumReduceTasks(1);                 // write a single file
        FileOutputFormat.setOutputPath(sortJob, new Path(args[1]));
        sortJob.setOutputKeyComparatorClass // sort by decreasing freq
                (LongWritable.DecreasingComparator.class);

        JobClient.runJob(sortJob);
    } finally {
        FileSystem.get(grepJob).delete(tempDir, true);
    }
    return 0;
}
Example #19
Source File: DBCountPageView.java    From hadoop-gpu with Apache License 2.0 4 votes vote down vote up 
@Override
//Usage DBCountPageView [driverClass dburl]
public int run(String[] args) throws Exception {
  
  String driverClassName = DRIVER_CLASS;
  String url = DB_URL;
  
  if(args.length > 1) {
    driverClassName = args[0];
    url = args[1];
  }
  
  initialize(driverClassName, url);

  JobConf job = new JobConf(getConf(), DBCountPageView.class);
      
  job.setJobName("Count Pageviews of URLs");

  job.setMapperClass(PageviewMapper.class);
  job.setCombinerClass(LongSumReducer.class);
  job.setReducerClass(PageviewReducer.class);

  DBConfiguration.configureDB(job, driverClassName, url);
  
  DBInputFormat.setInput(job, AccessRecord.class, "Access"
      , null, "url", AccessFieldNames);

  DBOutputFormat.setOutput(job, "Pageview", PageviewFieldNames);
  
  job.setMapOutputKeyClass(Text.class);
  job.setMapOutputValueClass(LongWritable.class);

  job.setOutputKeyClass(PageviewRecord.class);
  job.setOutputValueClass(NullWritable.class);

  try {
    JobClient.runJob(job);
    
    boolean correct = verify();
    if(!correct) {
      throw new RuntimeException("Evaluation was not correct!");
    }
  } finally {
    shutdown();    
  }
  return 0;
}