コード例 #1
0
 /** Check whether the name-node can be started. */
 private boolean canStartNameNode(Configuration conf) throws IOException {
   NameNode nn2 = null;
   try {
     nn2 = NameNode.createNameNode(new String[] {}, conf);
   } catch (IOException e) {
     if (e instanceof java.net.BindException) return false;
     throw e;
   }
   stopNameNode(nn2);
   return true;
 }
コード例 #2
0
  /** Start the name-node. */
  public NameNode startNameNode() throws IOException {
    String dataDir = System.getProperty("test.build.data");
    hdfsDir = new File(dataDir, "dfs");
    if (hdfsDir.exists() && !FileUtil.fullyDelete(hdfsDir)) {
      throw new IOException("Could not delete hdfs directory '" + hdfsDir + "'");
    }
    config = new Configuration();
    config.set("dfs.name.dir", new File(hdfsDir, "name1").getPath());
    FileSystem.setDefaultUri(config, "hdfs://" + NAME_NODE_HOST + "0");
    config.set("dfs.http.address", NAME_NODE_HTTP_HOST + "0");
    NameNode.format(config);

    String[] args = new String[] {};
    // NameNode will modify config with the ports it bound to
    return NameNode.createNameNode(args, config);
  }
コード例 #3
0
  NNThroughputBenchmark(Configuration conf) throws IOException, LoginException {
    config = conf;

    // We do not need many handlers, since each thread simulates a handler
    // by calling name-node methods directly
    config.setInt("dfs.namenode.handler.count", 1);
    // set exclude file
    config.set("dfs.hosts.exclude", "${hadoop.tmp.dir}/dfs/hosts/exclude");
    File excludeFile = new File(config.get("dfs.hosts.exclude", "exclude"));
    if (!excludeFile.exists()) {
      if (!excludeFile.getParentFile().mkdirs())
        throw new IOException("NNThroughputBenchmark: cannot mkdir " + excludeFile);
    }
    new FileOutputStream(excludeFile).close();
    // Start the NameNode
    String[] argv = new String[] {};
    nameNode = NameNode.createNameNode(argv, config);
  }