Example usage for org.apache.hadoop.io FloatWritable FloatWritable

Introduction

In this page you can find the example usage for org.apache.hadoop.io FloatWritable FloatWritable.

Prototype

public FloatWritable(float value)

Source Link

Usage

From source file:org.apache.giraph.aggregators.FloatMinAggregator.java

License:Apache License

@Override
public FloatWritable createInitialValue() {
    return new FloatWritable(Float.MAX_VALUE);
}

From source file:org.apache.giraph.aggregators.FloatOverwriteAggregator.java

License:Apache License

@Override
public FloatWritable createInitialValue() {
    return new FloatWritable(0);
}

From source file:org.apache.giraph.aggregators.FloatProductAggregator.java

License:Apache License

@Override
public FloatWritable createInitialValue() {
    return new FloatWritable(1);
}

From source file:org.apache.giraph.aggregators.TestFloatAggregators.java

License:Apache License

@Test
public void testMaxAggregator() {
    FloatMaxAggregator max = new FloatMaxAggregator();
    max.aggregate(new FloatWritable(2.0f));
    max.aggregate(new FloatWritable(3.0f));
    assertEquals(3.0f, max.getAggregatedValue().get(), 0f);
    max.setAggregatedValue(new FloatWritable(1.0f));
    assertEquals(1.0f, max.getAggregatedValue().get(), 0f);
    FloatWritable fw = max.createInitialValue();
    assertNotNull(fw);/* w w  w.  j a va 2 s .  com*/
}

From source file:org.apache.giraph.aggregators.TestFloatAggregators.java

License:Apache License

@Test
public void testMinAggregator() {
    FloatMinAggregator min = new FloatMinAggregator();
    min.aggregate(new FloatWritable(3.0f));
    min.aggregate(new FloatWritable(2.0f));
    assertEquals(2.0f, min.getAggregatedValue().get(), 0f);
    min.setAggregatedValue(new FloatWritable(3.0f));
    assertEquals(3.0f, min.getAggregatedValue().get(), 0f);
    FloatWritable fw = min.createInitialValue();
    assertNotNull(fw);//from w  w w .  jav a  2 s .  c  o m
}

From source file:org.apache.giraph.aggregators.TestFloatAggregators.java

License:Apache License

@Test
public void testOverwriteAggregator() {
    FloatOverwriteAggregator overwrite = new FloatOverwriteAggregator();
    overwrite.aggregate(new FloatWritable(1.0f));
    assertEquals(1.0f, overwrite.getAggregatedValue().get(), 0f);
    overwrite.aggregate(new FloatWritable(2.0f));
    assertEquals(2.0f, overwrite.getAggregatedValue().get(), 0f);
    overwrite.setAggregatedValue(new FloatWritable(3.0f));
    assertEquals(3.0f, overwrite.getAggregatedValue().get(), 0f);
    FloatWritable fw = overwrite.createInitialValue();
    assertNotNull(fw);/*from   ww  w  . j a  va  2 s.  c  om*/
}

From source file:org.apache.giraph.aggregators.TestFloatAggregators.java

License:Apache License

@Test
public void testProductAggregator() {
    FloatProductAggregator product = new FloatProductAggregator();
    product.aggregate(new FloatWritable(6.0f));
    product.aggregate(new FloatWritable(7.0f));
    assertEquals(42.0f, product.getAggregatedValue().get(), 0f);
    product.setAggregatedValue(new FloatWritable(1.0f));
    assertEquals(1.0f, product.getAggregatedValue().get(), 0f);
    FloatWritable fw = product.createInitialValue();
    assertNotNull(fw);/* w w w  .  j a va2 s  .  co  m*/
}

From source file:org.apache.giraph.aggregators.TestFloatAggregators.java

License:Apache License

@Test
public void testSumAggregator() {
    FloatSumAggregator sum = new FloatSumAggregator();
    sum.aggregate(new FloatWritable(1.0f));
    sum.aggregate(new FloatWritable(2.0f));
    assertEquals(3.0f, sum.getAggregatedValue().get(), 0f);
    sum.setAggregatedValue(new FloatWritable(4.0f));
    assertEquals(4.0f, sum.getAggregatedValue().get(), 0f);
    FloatWritable fw = sum.createInitialValue();
    assertNotNull(fw);// ww w.ja va  2s .  com
}

From source file:org.apache.giraph.benchmark.PageRankComputation.java

License:Apache License

@Override
public void compute(Vertex<IntWritable, FloatWritable, NullWritable> vertex, Iterable<FloatWritable> messages)
        throws IOException {
    if (getSuperstep() >= 1) {
        float sum = 0;
        for (FloatWritable message : messages) {
            sum += message.get();//from ww  w. ja v a2s.co m
        }
        vertex.getValue().set((0.15f / getTotalNumVertices()) + 0.85f * sum);
    }

    if (getSuperstep() < getConf().getInt(SUPERSTEP_COUNT, 0)) {
        sendMessageToAllEdges(vertex, new FloatWritable(vertex.getValue().get() / vertex.getNumEdges()));
    } else {
        vertex.voteToHalt();
    }
}

From source file:org.apache.giraph.benchmark.PageRankVertex.java

License:Apache License

@Override
public void compute(Iterable<FloatWritable> messages) throws IOException {
    if (getSuperstep() >= 1) {
        float sum = 0;
        for (FloatWritable message : messages) {
            sum += message.get();/*  ww  w.j  av  a 2s . c om*/
        }
        getValue().set((0.15f / getTotalNumVertices()) + 0.85f * sum);
    }

    if (getSuperstep() < getConf().getInt(SUPERSTEP_COUNT, 0)) {
        sendMessageToAllEdges(new FloatWritable(getValue().get() / getNumEdges()));
    } else {
        voteToHalt();
    }
}