Package org.apache.giraph.utils

Examples of org.apache.giraph.utils.UnsafeByteArrayOutputStream

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   *
   * @return ExtendedDataOutput object
   */
  public ExtendedDataOutput createExtendedDataOutput() {
    if (useUnsafeSerialization) {
      return new UnsafeByteArrayOutputStream();
    } else {
      return new ExtendedByteArrayDataOutput();
    }
  }
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   * @param expectedSize Expected size
   * @return ExtendedDataOutput object
   */
  public ExtendedDataOutput createExtendedDataOutput(int expectedSize) {
    if (useUnsafeSerialization) {
      return new UnsafeByteArrayOutputStream(expectedSize);
    } else {
      return new ExtendedByteArrayDataOutput(expectedSize);
    }
  }
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   * @return ExtendedDataOutput object
   */
  public ExtendedDataOutput createExtendedDataOutput(byte[] buf,
                                                     int pos) {
    if (useUnsafeSerialization) {
      return new UnsafeByteArrayOutputStream(buf, pos);
    } else {
      return new ExtendedByteArrayDataOutput(buf, pos);
    }
  }
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        IntWritable> partition =
        createPartition(conf, 3, v1, v2, v3, v4, v5, v6, v7);
    assertEquals(3, partition.getId());
    assertEquals(0, partition.getEdgeCount());
    assertEquals(7, partition.getVertexCount());
    UnsafeByteArrayOutputStream outputStream = new
        UnsafeByteArrayOutputStream();
    partition.write(outputStream);
    UnsafeByteArrayInputStream inputStream = new UnsafeByteArrayInputStream(
        outputStream.getByteArray(), 0, outputStream.getPos());
    Partition<IntWritable, IntWritable, NullWritable,
        IntWritable> deserializatedPartition = conf.createPartition(-1,
        context);
    deserializatedPartition.readFields(inputStream);
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    Vertex<LongWritable, FloatWritable, DoubleWritable, LongWritable> vertex =
        buildVertex(edgesClass);

    long serializeNanosStart;
    long serializeNanos = 0;
    UnsafeByteArrayOutputStream outputStream = null;
    for (int i = 0; i <
        REPS; ++i) {
      serializeNanosStart = SystemTime.get().getNanoseconds();
      outputStream =
          new UnsafeByteArrayOutputStream(32);
      WritableUtils.writeVertexToDataOutput(outputStream, vertex, vertex.getConf());
      serializeNanos += Times.getNanosecondsSince(SystemTime.get(),
          serializeNanosStart);
    }
    serializeNanos /= REPS;
    System.out.println("testUnsafeSerializeOutEdgesClass: " +
        "Serializing took " +
        serializeNanos +
        " ns for " + outputStream.getPos()
        + " bytes " +
        (outputStream.getPos() * 1f *
            Time.NS_PER_SECOND / serializeNanos) +
        " bytes / sec for " + edgesClass.getName());

    Vertex<LongWritable, FloatWritable, DoubleWritable, LongWritable>
        readVertex = buildVertex(edgesClass);

    long deserializeNanosStart;
    long deserializeNanos = 0;
    for (int i = 0; i < REPS; ++i) {
      deserializeNanosStart = SystemTime.get().getNanoseconds();
      UnsafeByteArrayInputStream inputStream = new
          UnsafeByteArrayInputStream(
          outputStream.getByteArray(), 0, outputStream.getPos());
      WritableUtils.reinitializeVertexFromDataInput(
          inputStream, readVertex, readVertex.getConf());
      deserializeNanos += Times.getNanosecondsSince(SystemTime.get(),
          deserializeNanosStart);
    }
    deserializeNanos /= REPS;
    System.out.println("testUnsafeSerializeOutEdgesClass: " +
        "Deserializing took " +
        deserializeNanos +
        " ns for " + outputStream.getPos() +
        " bytes " +
        (outputStream.getPos() * 1f *
            Time.NS_PER_SECOND / deserializeNanos) +
        " bytes / sec for " + edgesClass.getName());

    assertEquals(vertex.getId(), readVertex.getId());
    assertEquals(vertex.getValue(), readVertex.getValue());
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  /**
   * Serializes the value to bytes, stored in field valueBytes
   * @param value new vertex value
   */
  private void setSerializedValue(V value) {
    UnsafeByteArrayOutputStream bos = new UnsafeByteArrayOutputStream();
    try {
      value.write(bos);
      bos.close();
    } catch (IOException ioe) {
      throw new RuntimeException("Could not serialize vertex value", ioe);
    }
    this.valueBytes = bos.toByteArray();
    cachedValue = null;
  }
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    */
    public ThreadLocalWorkerGlobalCommUsage() {
      threadReducerMap = Maps.newHashMapWithExpectedSize(
          WorkerAggregatorHandler.this.reducerMap.size());

      UnsafeByteArrayOutputStream out = new UnsafeByteArrayOutputStream();
      UnsafeReusableByteArrayInput in = new UnsafeReusableByteArrayInput();

      for (Entry<String, Reducer<Object, Writable>> entry :
          reducerMap.entrySet()) {
        ReduceOperation<Object, Writable> globalReduceOp =
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    Partition<IntWritable, IntWritable, NullWritable> partition =
        createPartition(conf, 3, v1, v2, v3, v4, v5, v6, v7);
    assertEquals(3, partition.getId());
    assertEquals(0, partition.getEdgeCount());
    assertEquals(7, partition.getVertexCount());
    UnsafeByteArrayOutputStream outputStream = new
        UnsafeByteArrayOutputStream();
    partition.write(outputStream);
    UnsafeByteArrayInputStream inputStream = new UnsafeByteArrayInputStream(
        outputStream.getByteArray(), 0, outputStream.getPos());
    Partition<IntWritable, IntWritable, NullWritable> deserializatedPartition =
        conf.createPartition(-1, context);
    deserializatedPartition.readFields(inputStream);

    assertEquals(3, deserializatedPartition.getId());
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    Vertex<LongWritable, FloatWritable, DoubleWritable> vertex =
        buildVertex(edgesClass);

    long serializeNanosStart;
    long serializeNanos = 0;
    UnsafeByteArrayOutputStream outputStream = null;
    for (int i = 0; i <
        REPS; ++i) {
      serializeNanosStart = SystemTime.get().getNanoseconds();
      outputStream =
          new UnsafeByteArrayOutputStream(32);
      WritableUtils.writeVertexToDataOutput(outputStream, vertex, vertex.getConf());
      serializeNanos += Times.getNanosecondsSince(SystemTime.get(),
          serializeNanosStart);
    }
    serializeNanos /= REPS;
    System.out.println("testUnsafeSerializeOutEdgesClass: " +
        "Serializing took " +
        serializeNanos +
        " ns for " + outputStream.getPos()
        + " bytes " +
        (outputStream.getPos() * 1f *
            Time.NS_PER_SECOND / serializeNanos) +
        " bytes / sec for " + edgesClass.getName());

    Vertex<LongWritable, FloatWritable, DoubleWritable>
        readVertex = buildVertex(edgesClass);

    long deserializeNanosStart;
    long deserializeNanos = 0;
    for (int i = 0; i < REPS; ++i) {
      deserializeNanosStart = SystemTime.get().getNanoseconds();
      UnsafeByteArrayInputStream inputStream = new
          UnsafeByteArrayInputStream(
          outputStream.getByteArray(), 0, outputStream.getPos());
      WritableUtils.reinitializeVertexFromDataInput(
          inputStream, readVertex, readVertex.getConf());
      deserializeNanos += Times.getNanosecondsSince(SystemTime.get(),
          deserializeNanosStart);
    }
    deserializeNanos /= REPS;
    System.out.println("testUnsafeSerializeOutEdgesClass: " +
        "Deserializing took " +
        deserializeNanos +
        " ns for " + outputStream.getPos() +
        " bytes " +
        (outputStream.getPos() * 1f *
            Time.NS_PER_SECOND / deserializeNanos) +
        " bytes / sec for " + edgesClass.getName());

    assertEquals(vertex.getId(), readVertex.getId());
    assertEquals(vertex.getValue(), readVertex.getValue());
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   *
   * @return ExtendedDataOutput object
   */
  public ExtendedDataOutput createExtendedDataOutput() {
    if (useUnsafeSerialization) {
      return new UnsafeByteArrayOutputStream();
    } else {
      return new ExtendedByteArrayDataOutput();
    }
  }
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Related Classes of org.apache.giraph.utils.UnsafeByteArrayOutputStream

  • org.apache.giraph.comm.requests.SendAggregatorsToOwnerRequest
  • org.apache.giraph.conf.ImmutableClassesGiraphConfiguration
  • org.apache.giraph.graph.ByteValueVertex
  • org.apache.giraph.graph.TestVertexAndEdges
  • org.apache.giraph.partition.TestPartitionStores
  • org.apache.giraph.worker.WorkerAggregatorHandler$ThreadLocalWorkerGlobalCommUsage
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