示例#1
0
  public void inject(Path crawlDb, Path urlDir) throws IOException {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    long start = System.currentTimeMillis();
    if (LOG.isInfoEnabled()) {
      LOG.info("Injector: starting at " + sdf.format(start));
      LOG.info("Injector: crawlDb: " + crawlDb);
      LOG.info("Injector: urlDir: " + urlDir);
    }

    Path tempDir =
        new Path(
            getConf().get("mapred.temp.dir", ".")
                + "/inject-temp-"
                + Integer.toString(new Random().nextInt(Integer.MAX_VALUE)));

    // map text input file to a <url,CrawlDatum> file
    if (LOG.isInfoEnabled()) {
      LOG.info("Injector: Converting injected urls to crawl db entries.");
    }
    JobConf sortJob = new NutchJob(getConf());
    sortJob.setJobName("inject " + urlDir);
    FileInputFormat.addInputPath(sortJob, urlDir);
    sortJob.setMapperClass(InjectMapper.class);

    FileOutputFormat.setOutputPath(sortJob, tempDir);
    sortJob.setOutputFormat(SequenceFileOutputFormat.class);
    sortJob.setOutputKeyClass(Text.class);
    sortJob.setOutputValueClass(CrawlDatum.class);
    sortJob.setLong("injector.current.time", System.currentTimeMillis());
    RunningJob mapJob = JobClient.runJob(sortJob);

    long urlsInjected = mapJob.getCounters().findCounter("injector", "urls_injected").getValue();
    long urlsFiltered = mapJob.getCounters().findCounter("injector", "urls_filtered").getValue();
    LOG.info("Injector: total number of urls rejected by filters: " + urlsFiltered);
    LOG.info(
        "Injector: total number of urls injected after normalization and filtering: "
            + urlsInjected);

    // merge with existing crawl db
    if (LOG.isInfoEnabled()) {
      LOG.info("Injector: Merging injected urls into crawl db.");
    }
    JobConf mergeJob = CrawlDb.createJob(getConf(), crawlDb);
    FileInputFormat.addInputPath(mergeJob, tempDir);
    mergeJob.setReducerClass(InjectReducer.class);
    JobClient.runJob(mergeJob);
    CrawlDb.install(mergeJob, crawlDb);

    // clean up
    FileSystem fs = FileSystem.get(getConf());
    fs.delete(tempDir, true);

    long end = System.currentTimeMillis();
    LOG.info(
        "Injector: finished at "
            + sdf.format(end)
            + ", elapsed: "
            + TimingUtil.elapsedTime(start, end));
  }
  @Override
  public int run(String[] args) throws Exception {
    if (args.length != 2) {
      System.err.printf(
          "Usage: %s [generic options] <input> <output>\n", getClass().getSimpleName());
      ToolRunner.printGenericCommandUsage(System.err);
      return -1;
    }

    JobConf conf = new JobConf(getConf(), getClass());
    conf.setJobName("Max temperature");

    FileInputFormat.addInputPath(conf, new Path(args[0]));
    FileOutputFormat.setOutputPath(conf, new Path(args[1]));

    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(IntWritable.class);

    conf.setMapperClass(MaxTemperatureMapper.class);
    conf.setCombinerClass(MaxTemperatureReducer.class);
    conf.setReducerClass(MaxTemperatureReducer.class);

    // vv MaxTemperatureDriverV6
    conf.setProfileEnabled(true);
    conf.setProfileParams(
        "-agentlib:hprof=cpu=samples,heap=sites,depth=6," + "force=n,thread=y,verbose=n,file=%s");
    conf.setProfileTaskRange(true, "0-2");
    // ^^ MaxTemperatureDriverV6

    JobClient.runJob(conf);
    return 0;
  }
  @Override
  public int run(String[] args) throws Exception {
    JobConf conf = new JobConf(getConf(), getClass());
    conf.setJobName("UFO count");

    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    if (otherArgs.length != 2) {
      System.err.println("Usage: avro UFO counter <in> <out>");
      System.exit(2);
    }

    FileInputFormat.addInputPath(conf, new Path(otherArgs[0]));
    Path outputPath = new Path(otherArgs[1]);
    FileOutputFormat.setOutputPath(conf, outputPath);
    outputPath.getFileSystem(conf).delete(outputPath);
    Schema input_schema = Schema.parse(getClass().getResourceAsStream("ufo.avsc"));
    AvroJob.setInputSchema(conf, input_schema);
    AvroJob.setMapOutputSchema(
        conf,
        Pair.getPairSchema(Schema.create(Schema.Type.STRING), Schema.create(Schema.Type.LONG)));

    AvroJob.setOutputSchema(conf, OUTPUT_SCHEMA);
    AvroJob.setMapperClass(conf, AvroRecordMapper.class);
    AvroJob.setReducerClass(conf, AvroRecordReducer.class);
    conf.setInputFormat(AvroInputFormat.class);
    JobClient.runJob(conf);

    return 0;
  }
示例#4
0
  public int run(String[] args) throws Exception {
    Path tempDir = new Path("/user/akhfa/temp");

    Configuration conf = new Configuration();
    Job job = Job.getInstance(conf, "word count");
    job.setJarByClass(AuthorCounter.class);
    job.setMapperClass(TokenizerMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(LongWritable.class);
    job.setOutputFormatClass(SequenceFileOutputFormat.class);

    FileInputFormat.addInputPath(job, new Path(args[0]));
    FileOutputFormat.setOutputPath(job, tempDir);
    System.exit(job.waitForCompletion(true) ? 0 : 1);

    return 0;
  }