Exemplo n.º 1
0
    protected void setup(Context context) throws IOException, InterruptedException {
      super.setup(context);

      Path pt = new Path("/user/yao/query/query");
      FileSystem fs = FileSystem.get(new Configuration());
      BufferedReader br = new BufferedReader(new InputStreamReader(fs.open(pt)));
      String line = br.readLine();
      String[] keywords = line.split(",");
      k0 = keywords[0];
      k1 = keywords[1];
      k2 = keywords[2];
      br.close();
    }
Exemplo n.º 2
0
 public static List<String> readConfig(Path path, Configuration conf) throws IOException {
   final FileSystem fs = FileSystem.get(conf);
   final BufferedReader reader = new BufferedReader(new InputStreamReader(fs.open(path)));
   try {
     final ArrayList<String> addrs = new ArrayList<String>();
     String line;
     while ((line = reader.readLine()) != null) {
       addrs.add(line);
     }
     return addrs;
   } finally {
     reader.close();
   }
 }
    /* called once at the beginning of the task */
    public void setup(Context context) throws IOException, InterruptedException {
      BufferedReader br = null;
      Path[] files = DistributedCache.getLocalCacheFiles(context.getConfiguration());
      if (files != null && files.length > 0)
        br = new BufferedReader(new FileReader(files[0].toString()));
      String line = null;

      /* reads the cached file into a hashmap */
      try {
        while ((line = br.readLine()) != null) {
          String input[] = line.split(",");
          vector.put(Long.valueOf(input[0]), Double.valueOf(input[1]));
        }
      } finally {
        br.close();
      }
    }
Exemplo n.º 4
0
  public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.get(conf);

    Path matFile = new Path(args[0]);
    FSDataInputStream matData = fs.open(matFile);
    BufferedReader br = new BufferedReader(new InputStreamReader(matData));

    int i = 0;
    String line;
    while ((line = br.readLine()) != null) {
      StringTokenizer tokenizer = new StringTokenizer(line);
      String iRow = tokenizer.nextToken();
      String iCol = tokenizer.nextToken();
      if (Integer.parseInt(iRow) == Integer.parseInt(iCol)) {
        i++;
      }
    }
    br.close();
    int dimention = i;

    conf.setInt("DIMENTION", dimention);
    Path xFile = new Path("preX/Result");
    FSDataOutputStream xData = fs.create(xFile);
    BufferedWriter iniX = new BufferedWriter(new OutputStreamWriter(xData));
    for (int j = 0; j < dimention; j++) {
      iniX.write(String.valueOf(j) + " 0");
      iniX.newLine();
    }
    iniX.close();

    URI matVec = new URI(args[0]);
    DistributedCache.addCacheFile(matVec, conf);

    int iteration = 0;
    do {
      ToolRunner.run(conf, new Jacobi(), args);
    } while (iteration++ < max_iter && (!stopIteration(conf)));
  }
Exemplo n.º 5
0
 public synchronized void close() throws IOException {
   if (m_Input != null) {
     m_Input.close();
   }
 }