Exemplo n.º 1
0
  @Test
  public void testRecordReader() throws Exception {
    int n = 1;
    int maxNumSplits = 100;
    int maxNbTrees = 1000;

    Random rng = RandomUtils.getRandom();

    for (int nloop = 0; nloop < n; nloop++) {
      int numSplits = rng.nextInt(maxNumSplits) + 1;
      int nbTrees = rng.nextInt(maxNbTrees) + 1;

      Configuration conf = getConfiguration();
      Builder.setNbTrees(conf, nbTrees);

      InMemInputFormat inputFormat = new InMemInputFormat();
      List<InputSplit> splits = inputFormat.getSplits(conf, numSplits);

      for (int index = 0; index < numSplits; index++) {
        InMemInputSplit split = (InMemInputSplit) splits.get(index);
        InMemRecordReader reader = new InMemRecordReader(split);

        reader.initialize(split, null);

        for (int tree = 0; tree < split.getNbTrees(); tree++) {
          // reader.next() should return true until there is no tree left
          assertEquals(tree < split.getNbTrees(), reader.nextKeyValue());
          assertEquals(split.getFirstId() + tree, reader.getCurrentKey().get());
        }
      }
    }
  }
  @Override
  protected DecisionForest parseOutput(Job job) throws IOException {
    Configuration conf = job.getConfiguration();

    int numTrees = Builder.getNbTrees(conf);

    Path outputPath = getOutputPath(conf);

    TreeID[] keys = new TreeID[numTrees];
    Node[] trees = new Node[numTrees];

    int[] npos = new int[Builder.getNumMaps(conf)];
    int[] nneg = new int[Builder.getNumMaps(conf)];

    processOutput(job, outputPath, keys, trees, nneg, npos);

    return new DecisionForest(Arrays.asList(trees), nneg, npos);
  }
Exemplo n.º 3
0
  @Test
  public void testSplits() throws Exception {
    int n = 1;
    int maxNumSplits = 100;
    int maxNbTrees = 1000;

    Random rng = RandomUtils.getRandom();

    for (int nloop = 0; nloop < n; nloop++) {
      int numSplits = rng.nextInt(maxNumSplits) + 1;
      int nbTrees = rng.nextInt(maxNbTrees) + 1;

      Configuration conf = getConfiguration();
      Builder.setNbTrees(conf, nbTrees);

      InMemInputFormat inputFormat = new InMemInputFormat();
      List<InputSplit> splits = inputFormat.getSplits(conf, numSplits);

      assertEquals(numSplits, splits.size());

      int nbTreesPerSplit = nbTrees / numSplits;
      int totalTrees = 0;
      int expectedId = 0;

      for (int index = 0; index < numSplits; index++) {
        assertTrue(splits.get(index) instanceof InMemInputSplit);

        InMemInputSplit split = (InMemInputSplit) splits.get(index);

        assertEquals(expectedId, split.getFirstId());

        if (index < numSplits - 1) {
          assertEquals(nbTreesPerSplit, split.getNbTrees());
        } else {
          assertEquals(nbTrees - totalTrees, split.getNbTrees());
        }

        totalTrees += split.getNbTrees();
        expectedId += split.getNbTrees();
      }
    }
  }