예제 #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));
  }
예제 #2
0
  public static void main(String[] args) throws Exception {

    final String NAME_NODE = "hdfs://sandbox.hortonworks.com:8020";
    Configuration conf = new Configuration();
    Job job = Job.getInstance(conf);
    job.setJarByClass(WordCount.class);
    job.setMapOutputKeyClass(Text.class);
    job.setMapOutputValueClass(IntWritable.class);
    job.setOutputKeyClass(IntWritable.class);
    job.setOutputValueClass(NullWritable.class);
    if (args.length > 2) {
      job.setNumReduceTasks(Integer.parseInt(args[2]));
    }

    job.setMapperClass(CountMapper.class);
    job.setReducerClass(CountReducer.class);
    job.setJarByClass(WordCount.class);
    job.setNumReduceTasks(1);

    FileInputFormat.addInputPath(job, new Path(args[0] + "data/plot_summaries.txt"));
    FileSystem fs = FileSystem.get(conf);
    // handle (e.g. delete) existing output path
    Path outputDestination = new Path(args[0] + args[1]);
    if (fs.exists(outputDestination)) {
      fs.delete(outputDestination, true);
    }

    // set output path & start job1
    FileOutputFormat.setOutputPath(job, outputDestination);
    int jobCompletionStatus = job.waitForCompletion(true) ? 0 : 1;
  }
  void checkFormat(Job job) throws Exception {
    TaskAttemptContext attemptContext =
        new TaskAttemptContext(job.getConfiguration(), new TaskAttemptID("123", 0, false, 1, 2));

    MyClassMessagePackBase64LineInputFormat format = new MyClassMessagePackBase64LineInputFormat();
    FileInputFormat.setInputPaths(job, workDir);

    List<InputSplit> splits = format.getSplits(job);
    for (int j = 0; j < splits.size(); j++) {
      RecordReader<LongWritable, MyClassWritable> reader =
          format.createRecordReader(splits.get(j), attemptContext);
      reader.initialize(splits.get(j), attemptContext);

      int count = 0;
      try {
        while (reader.nextKeyValue()) {
          LongWritable key = reader.getCurrentKey();
          MyClassWritable val = reader.getCurrentValue();
          MyClass mc = val.get();
          assertEquals(mc.v, count);
          assertEquals(mc.s, Integer.toString(count));
          count++;
        }
      } finally {
        reader.close();
      }
    }
  }
예제 #4
0
  private static IntWritable deduceInputFile(JobConf job) {
    Path[] inputPaths = FileInputFormat.getInputPaths(job);
    Path inputFile = new Path(job.get("map.input.file"));

    // value == one for sort-input; value == two for sort-output
    return (inputFile.getParent().equals(inputPaths[0])) ? sortInput : sortOutput;
  }
예제 #5
0
  public int run(String[] args) throws Exception {
    JobConf conf = new JobConf(getConf(), XiangLi1_exercise3.class);
    conf.setJobName("xiangli1_exercise3");
    conf.setNumReduceTasks(0);
    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(Text.class);

    conf.setMapperClass(Map.class);
    // conf.setCombinerClass(Reduce.class);
    // conf.setReducerClass(Reduce.class);

    conf.setInputFormat(TextInputFormat.class);
    conf.setOutputFormat(TextOutputFormat.class);

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

    JobClient.runJob(conf);
    return 0;
  }
예제 #6
0
  @Override
  public int run(String[] args) throws Exception {
    Configuration conf = getConf();
    FileSystem fs = FileSystem.get(conf);
    JobConf job = new JobConf(conf);
    job.setJarByClass(Jacobi.class);

    fs.delete(new Path("curX"), true);
    job.setInputFormat(TextInputFormat.class);
    job.setOutputFormat(TextOutputFormat.class);
    job.setMapperClass(Map.class);
    job.setReducerClass(Reduce.class);
    job.setOutputKeyClass(IntWritable.class);
    job.setOutputValueClass(DoubleWritable.class);

    FileInputFormat.setInputPaths(job, new Path("preX"));
    FileOutputFormat.setOutputPath(job, new Path("curX"));

    JobClient.runJob(job);
    return 1;
  }
  public void testFormat() throws Exception {
    JobConf job = new JobConf(conf);
    FileSystem fs = FileSystem.getLocal(conf);
    Path dir = new Path(System.getProperty("test.build.data", ".") + "/mapred");
    Path file = new Path(dir, "test.seq");

    Reporter reporter = Reporter.NULL;

    int seed = new Random().nextInt();
    // LOG.info("seed = "+seed);
    Random random = new Random(seed);

    fs.delete(dir, true);

    FileInputFormat.setInputPaths(job, dir);

    // for a variety of lengths
    for (int length = 0; length < MAX_LENGTH; length += random.nextInt(MAX_LENGTH / 10) + 1) {

      // LOG.info("creating; entries = " + length);

      // create a file with length entries
      SequenceFile.Writer writer =
          SequenceFile.createWriter(fs, conf, file, IntWritable.class, BytesWritable.class);
      try {
        for (int i = 0; i < length; i++) {
          IntWritable key = new IntWritable(i);
          byte[] data = new byte[random.nextInt(10)];
          random.nextBytes(data);
          BytesWritable value = new BytesWritable(data);
          writer.append(key, value);
        }
      } finally {
        writer.close();
      }

      // try splitting the file in a variety of sizes
      InputFormat<IntWritable, BytesWritable> format =
          new SequenceFileInputFormat<IntWritable, BytesWritable>();
      IntWritable key = new IntWritable();
      BytesWritable value = new BytesWritable();
      for (int i = 0; i < 3; i++) {
        int numSplits = random.nextInt(MAX_LENGTH / (SequenceFile.SYNC_INTERVAL / 20)) + 1;
        // LOG.info("splitting: requesting = " + numSplits);
        InputSplit[] splits = format.getSplits(job, numSplits);
        // LOG.info("splitting: got =        " + splits.length);

        // check each split
        BitSet bits = new BitSet(length);
        for (int j = 0; j < splits.length; j++) {
          RecordReader<IntWritable, BytesWritable> reader =
              format.getRecordReader(splits[j], job, reporter);
          try {
            int count = 0;
            while (reader.next(key, value)) {
              // if (bits.get(key.get())) {
              // LOG.info("splits["+j+"]="+splits[j]+" : " +
              // key.get());
              // LOG.info("@"+reader.getPos());
              // }
              assertFalse("Key in multiple partitions.", bits.get(key.get()));
              bits.set(key.get());
              count++;
            }
            // LOG.info("splits["+j+"]="+splits[j]+" count=" +
            // count);
          } finally {
            reader.close();
          }
        }
        assertEquals("Some keys in no partition.", length, bits.cardinality());
      }
    }
  }
예제 #8
0
    static void checkRecords(
        Configuration defaults, int noMaps, int noReduces, Path sortInput, Path sortOutput)
        throws IOException {
      JobConf jobConf = new JobConf(defaults, RecordChecker.class);
      jobConf.setJobName("sortvalidate-record-checker");

      jobConf.setInputFormat(SequenceFileInputFormat.class);
      jobConf.setOutputFormat(SequenceFileOutputFormat.class);

      jobConf.setOutputKeyClass(BytesWritable.class);
      jobConf.setOutputValueClass(IntWritable.class);

      jobConf.setMapperClass(Map.class);
      jobConf.setReducerClass(Reduce.class);

      JobClient client = new JobClient(jobConf);
      ClusterStatus cluster = client.getClusterStatus();
      if (noMaps == -1) {
        noMaps = cluster.getTaskTrackers() * jobConf.getInt("test.sortvalidate.maps_per_host", 10);
      }
      if (noReduces == -1) {
        noReduces = (int) (cluster.getMaxReduceTasks() * 0.9);
        String sortReduces = jobConf.get("test.sortvalidate.reduces_per_host");
        if (sortReduces != null) {
          noReduces = cluster.getTaskTrackers() * Integer.parseInt(sortReduces);
        }
      }
      jobConf.setNumMapTasks(noMaps);
      jobConf.setNumReduceTasks(noReduces);

      FileInputFormat.setInputPaths(jobConf, sortInput);
      FileInputFormat.addInputPath(jobConf, sortOutput);
      Path outputPath = new Path("/tmp/sortvalidate/recordchecker");
      FileSystem fs = FileSystem.get(defaults);
      if (fs.exists(outputPath)) {
        fs.delete(outputPath, true);
      }
      FileOutputFormat.setOutputPath(jobConf, outputPath);

      // Uncomment to run locally in a single process
      // job_conf.set("mapred.job.tracker", "local");
      Path[] inputPaths = FileInputFormat.getInputPaths(jobConf);
      System.out.println(
          "\nSortValidator.RecordChecker: Running on "
              + cluster.getTaskTrackers()
              + " nodes to validate sort from "
              + inputPaths[0]
              + ", "
              + inputPaths[1]
              + " into "
              + FileOutputFormat.getOutputPath(jobConf)
              + " with "
              + noReduces
              + " reduces.");
      Date startTime = new Date();
      System.out.println("Job started: " + startTime);
      JobClient.runJob(jobConf);
      Date end_time = new Date();
      System.out.println("Job ended: " + end_time);
      System.out.println(
          "The job took " + (end_time.getTime() - startTime.getTime()) / 1000 + " seconds.");
    }
예제 #9
0
    static void checkRecords(Configuration defaults, Path sortInput, Path sortOutput)
        throws IOException {
      FileSystem inputfs = sortInput.getFileSystem(defaults);
      FileSystem outputfs = sortOutput.getFileSystem(defaults);
      FileSystem defaultfs = FileSystem.get(defaults);
      JobConf jobConf = new JobConf(defaults, RecordStatsChecker.class);
      jobConf.setJobName("sortvalidate-recordstats-checker");

      int noSortReduceTasks = outputfs.listStatus(sortOutput, sortPathsFilter).length;
      jobConf.setInt("sortvalidate.sort.reduce.tasks", noSortReduceTasks);
      int noSortInputpaths = inputfs.listStatus(sortInput).length;

      jobConf.setInputFormat(NonSplitableSequenceFileInputFormat.class);
      jobConf.setOutputFormat(SequenceFileOutputFormat.class);

      jobConf.setOutputKeyClass(IntWritable.class);
      jobConf.setOutputValueClass(RecordStatsChecker.RecordStatsWritable.class);

      jobConf.setMapperClass(Map.class);
      jobConf.setCombinerClass(Reduce.class);
      jobConf.setReducerClass(Reduce.class);

      jobConf.setNumMapTasks(noSortReduceTasks);
      jobConf.setNumReduceTasks(1);

      FileInputFormat.setInputPaths(jobConf, sortInput);
      FileInputFormat.addInputPath(jobConf, sortOutput);
      Path outputPath = new Path("/tmp/sortvalidate/recordstatschecker");
      if (defaultfs.exists(outputPath)) {
        defaultfs.delete(outputPath, true);
      }
      FileOutputFormat.setOutputPath(jobConf, outputPath);

      // Uncomment to run locally in a single process
      // job_conf.set("mapred.job.tracker", "local");
      Path[] inputPaths = FileInputFormat.getInputPaths(jobConf);
      System.out.println(
          "\nSortValidator.RecordStatsChecker: Validate sort "
              + "from "
              + inputPaths[0]
              + " ("
              + noSortInputpaths
              + " files), "
              + inputPaths[1]
              + " ("
              + noSortReduceTasks
              + " files) into "
              + FileOutputFormat.getOutputPath(jobConf)
              + " with 1 reducer.");
      Date startTime = new Date();
      System.out.println("Job started: " + startTime);
      JobClient.runJob(jobConf);
      Date end_time = new Date();
      System.out.println("Job ended: " + end_time);
      System.out.println(
          "The job took " + (end_time.getTime() - startTime.getTime()) / 1000 + " seconds.");

      // Check to ensure that the statistics of the
      // framework's sort-input and sort-output match
      SequenceFile.Reader stats =
          new SequenceFile.Reader(defaultfs, new Path(outputPath, "part-00000"), defaults);
      IntWritable k1 = new IntWritable();
      IntWritable k2 = new IntWritable();
      RecordStatsWritable v1 = new RecordStatsWritable();
      RecordStatsWritable v2 = new RecordStatsWritable();
      if (!stats.next(k1, v1)) {
        throw new IOException("Failed to read record #1 from reduce's output");
      }
      if (!stats.next(k2, v2)) {
        throw new IOException("Failed to read record #2 from reduce's output");
      }

      if ((v1.getBytes() != v2.getBytes())
          || (v1.getRecords() != v2.getRecords())
          || v1.getChecksum() != v2.getChecksum()) {
        throw new IOException(
            "("
                + v1.getBytes()
                + ", "
                + v1.getRecords()
                + ", "
                + v1.getChecksum()
                + ") v/s ("
                + v2.getBytes()
                + ", "
                + v2.getRecords()
                + ", "
                + v2.getChecksum()
                + ")");
      }
    }