Examples of NetworkTopology

eu.stratosphere.nephele.topology.NetworkTopology
org.apache.hadoop.net.NetworkTopology
The class represents a cluster of computer with a tree hierarchical network topology. For example, a cluster may be consists of many data centers filled with racks of computers. In a network topology, leaves represent data nodes (computers) and inner nodes represent switches/routers that manage traffic in/out of data centers or racks. @author hairong

Examples of org.apache.hadoop.net.NetworkTopology

   * FSNamesystem constructor.
   */
  FSNamesystem(NameNode nn, Configuration conf) throws IOException {
    super(conf);
    try {
      clusterMap = new NetworkTopology(conf);
      initialize(nn, getConf());
      pathValidator = new PathValidator(conf);
    } catch (IOException e) {
      LOG.error(getClass().getSimpleName() + " initialization failed.", e);
      close();

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Examples of org.apache.hadoop.net.NetworkTopology

   * dirs is a list of directories where the filesystem directory state
   * is stored
   */
  FSNamesystem(FSImage fsImage, Configuration conf) throws IOException {
    super(conf);
    this.clusterMap = new NetworkTopology(conf);
    this.fsLock = new ReentrantReadWriteLock();
    setConfigurationParameters(conf);
    this.dir = new FSDirectory(fsImage, this, conf);
  }

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Examples of org.apache.hadoop.net.NetworkTopology

    return goodBlock;
  }


  /* reset all fields in a balancer preparing for the next iteration */
  private void resetData() {
    this.cluster = new NetworkTopology();
    this.overUtilizedDatanodes.clear();
    this.aboveAvgUtilizedDatanodes.clear();
    this.belowAvgUtilizedDatanodes.clear();
    this.underUtilizedDatanodes.clear();
    this.datanodes.clear();

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Examples of org.apache.hadoop.net.NetworkTopology

      long fileLen = blockSize * NUM_BLOCKS;
      DFSTestUtil.createFile(dfs, path, fileLen, REPL_FACTOR, 1);
      
      // Create an under-replicated file
      NameNode namenode = cluster.getNameNode();
      NetworkTopology nettop = cluster.getNamesystem().getBlockManager()
          .getDatanodeManager().getNetworkTopology();
      Map<String,String[]> pmap = new HashMap<String, String[]>();
      Writer result = new StringWriter();
      PrintWriter out = new PrintWriter(result, true);
      InetAddress remoteAddress = InetAddress.getLocalHost();

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Examples of org.apache.hadoop.net.NetworkTopology

    long minSize = Math.max(job.getLong(org.apache.hadoop.mapreduce.lib.input.
      FileInputFormat.SPLIT_MINSIZE, 1), minSplitSize);


    // generate splits
    ArrayList<FileSplit> splits = new ArrayList<FileSplit>(numSplits);
    NetworkTopology clusterMap = new NetworkTopology();
    for (FileStatus file: files) {
      Path path = file.getPath();
      long length = file.getLen();
      if (length != 0) {
        FileSystem fs = path.getFileSystem(job);

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Examples of org.apache.hadoop.net.NetworkTopology

      if (reached >= 0) {
        NameNode.stateChangeLog.info("STATE* Safe mode is OFF"); 
      }
      reached = -1;
      safeMode = null;
      final NetworkTopology nt = blockManager.getDatanodeManager().getNetworkTopology();
      NameNode.stateChangeLog.info("STATE* Network topology has "
          + nt.getNumOfRacks() + " racks and "
          + nt.getNumOfLeaves() + " datanodes");
      NameNode.stateChangeLog.info("STATE* UnderReplicatedBlocks has "
          + blockManager.numOfUnderReplicatedBlocks() + " blocks");


      startSecretManagerIfNecessary();

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Examples of org.apache.hadoop.net.NetworkTopology

    long goalSize = totalSize / (numSplits == 0 ? 1 : numSplits);
    long minSize = Math.max(job.getConf().getLong("bsp.min.split.size", 1),
        minSplitSize);


    // generate splits
    NetworkTopology clusterMap = new NetworkTopology();
    for (FileStatus file : files) {
      if (file != null) {
        Path path = file.getPath();
        FileSystem fs = path.getFileSystem(job.getConf());
        long length = file.getLen();

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Examples of org.apache.hadoop.net.NetworkTopology

      if (reached >= 0) {
        NameNode.stateChangeLog.info("STATE* Safe mode is OFF."); 
      }
      reached = -1;
      safeMode = null;
      final NetworkTopology nt = blockManager.getDatanodeManager().getNetworkTopology();
      NameNode.stateChangeLog.info("STATE* Network topology has "
          + nt.getNumOfRacks() + " racks and "
          + nt.getNumOfLeaves() + " datanodes");
      NameNode.stateChangeLog.info("STATE* UnderReplicatedBlocks has "
          + blockManager.numOfUnderReplicatedBlocks() + " blocks");
    }

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Examples of org.apache.hadoop.net.NetworkTopology

    rackA = nodes.subList(0, 3);
    rackB = nodes.subList(3, 6);
  }
  
  private void addNodes(Iterable<DatanodeDescriptor> nodesToAdd) {
    NetworkTopology cluster = bm.getDatanodeManager().getNetworkTopology();
    // construct network topology
    for (DatanodeDescriptor dn : nodesToAdd) {
      cluster.add(dn);
      dn.updateHeartbeat(
          2*HdfsConstants.MIN_BLOCKS_FOR_WRITE*BLOCK_SIZE, 0L,
          2*HdfsConstants.MIN_BLOCKS_FOR_WRITE*BLOCK_SIZE, 0L, 0, 0);
      bm.getDatanodeManager().checkIfClusterIsNowMultiRack(dn);
    }

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Examples of org.apache.hadoop.net.NetworkTopology

      bm.getDatanodeManager().checkIfClusterIsNowMultiRack(dn);
    }
  }


  private void removeNode(DatanodeDescriptor deadNode) {
    NetworkTopology cluster = bm.getDatanodeManager().getNetworkTopology();
    cluster.remove(deadNode);
    bm.removeBlocksAssociatedTo(deadNode);
  }

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