Examples of org.apache.hama.graph.GraphJob

      InterruptedException, ClassNotFoundException {
    if (args.length < 2)
      printUsage();


    HamaConfiguration conf = new HamaConfiguration(new Configuration());
    GraphJob pageJob = createJob(args, conf);


    long startTime = System.currentTimeMillis();
    if (pageJob.waitForCompletion(true)) {
      System.out.println("Job Finished in "
          + (System.currentTimeMillis() - startTime) / 1000.0 + " seconds");
    }
  }

  }


  @SuppressWarnings("unchecked")
  public static GraphJob createJob(String[] args, HamaConfiguration conf)
      throws IOException {
    GraphJob pageJob = new GraphJob(conf, PageRank.class);
    pageJob.setJobName("Pagerank");


    pageJob.setVertexClass(PageRankVertex.class);
    pageJob.setInputPath(new Path(args[0]));
    pageJob.setOutputPath(new Path(args[1]));


    // set the defaults
    pageJob.setMaxIteration(30);
    pageJob.set("hama.pagerank.alpha", "0.85");


    if (args.length == 6)
      pageJob.setNumBspTask(Integer.parseInt(args[5]));
    if (args.length >= 5)
      pageJob.setMaxIteration(Integer.parseInt(args[4]));
    if (args.length >= 4)
      pageJob.set("hama.graph.max.convergence.error", args[3]);
    if (args.length >= 3)
      pageJob.set("hama.pagerank.alpha", args[2]);


    // error, dangling node probability sum
    pageJob.setAggregatorClass(AverageAggregator.class,
        DanglingNodeAggregator.class);


    pageJob.setVertexIDClass(Text.class);
    pageJob.setVertexValueClass(DoubleWritable.class);
    pageJob.setEdgeValueClass(NullWritable.class);


    pageJob.setInputKeyClass(LongWritable.class);
    pageJob.setInputValueClass(Text.class);
    pageJob.setInputFormat(TextInputFormat.class);
    pageJob.setVertexInputReaderClass(PagerankTextReader.class);
    pageJob.setPartitioner(HashPartitioner.class);
    pageJob.setOutputFormat(TextOutputFormat.class);
    pageJob.setOutputKeyClass(Text.class);
    pageJob.setOutputValueClass(DoubleWritable.class);
    return pageJob;
  }

Examples of org.apache.hama.graph.GraphJob

Related Classes of org.apache.hama.graph.GraphJob