org.apache.hadoop.mapred.lib.LongSumReducer源码实例Demo-ICode联盟

类org.apache.hadoop.mapred.lib.LongSumReducer源码实例Demo

下面列出了怎么用org.apache.hadoop.mapred.lib.LongSumReducer的API类实例代码及写法，或者点击链接到github查看源代码。

源代码1 项目： hadoop 文件： TestFileSystem.java

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);
}

源代码2 项目： hadoop 文件： TestFileSystem.java

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);
}

源代码3 项目： hadoop 文件： TestFileSystem.java

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);
}

源代码4 项目： big-c 文件： TestFileSystem.java

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);
}

源代码5 项目： big-c 文件： TestFileSystem.java

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);
}

源代码6 项目： big-c 文件： TestFileSystem.java

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);
}

源代码7 项目： RDFS 文件： TestFileSystem.java

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);
}

源代码8 项目： RDFS 文件： TestFileSystem.java

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);
}

源代码9 项目： RDFS 文件： TestFileSystem.java

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);
}

源代码10 项目： hadoop-gpu 文件： TestFileSystem.java

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);
}

源代码11 项目： hadoop-gpu 文件： TestFileSystem.java

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);
}

源代码12 项目： hadoop-gpu 文件： TestFileSystem.java

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);
}

源代码13 项目： RDFS 文件： MultiFileWordCount.java

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;
  }

源代码14 项目： hadoop-book 文件： MultiFileWordCount.java

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;
    }

源代码15 项目： hadoop-gpu 文件： MultiFileWordCount.java

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;
  }

源代码16 项目： RDFS 文件： DBCountPageView.java

@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;
}

源代码17 项目： hadoop-book 文件： DBCountPageView.java

@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;
}

源代码18 项目： hadoop-book 文件： Grep.java

@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;
}

源代码19 项目： hadoop-gpu 文件： DBCountPageView.java

@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;
}

类所在包

org.apache.hadoop.mapred

类方法

org.apache.hadoop.mapred.lib.db.DBConfiguration

同包方法

org.apache.hadoop.mapred.JobConf

org.apache.hadoop.mapred.Reporter

org.apache.hadoop.mapred.InputSplit

org.apache.hadoop.mapred.RecordReader

org.apache.hadoop.mapred.FileInputFormat

org.apache.hadoop.mapred.FileSplit

org.apache.hadoop.mapred.JobClient