Examples with DoubleSummary com.yahoo.sketches.tuple.DoubleSummary used on opensource projects

Example 1 with DoubleSummary

use of com.yahoo.sketches.tuple.DoubleSummary in project sketches-pig by DataSketches.

the class DataToDoubleSummarySketchTest method execAllInputTypes.

@Test
public void execAllInputTypes() throws Exception {
    EvalFunc<Tuple> func = new DataToDoubleSummarySketch();
    DataBag bag = BagFactory.getInstance().newDefaultBag();
    bag.add(PigUtil.objectsToTuple("a", 1.0));
    bag.add(PigUtil.objectsToTuple("b", 1.0));
    bag.add(PigUtil.objectsToTuple("a", 2.0));
    bag.add(PigUtil.objectsToTuple("b", 2.0));
    bag.add(PigUtil.objectsToTuple(1, 3.0));
    bag.add(PigUtil.objectsToTuple(2L, 3.0));
    bag.add(PigUtil.objectsToTuple(1f, 3.0));
    bag.add(PigUtil.objectsToTuple(2.0, 3.0));
    bag.add(PigUtil.objectsToTuple((byte) 3, 3.0));
    bag.add(PigUtil.objectsToTuple(new DataByteArray("c".getBytes()), 3.0));
    Tuple inputTuple = PigUtil.objectsToTuple(bag);
    Tuple resultTuple = func.exec(inputTuple);
    Assert.assertNotNull(resultTuple);
    Assert.assertEquals(resultTuple.size(), 1);
    DataByteArray bytes = (DataByteArray) resultTuple.get(0);
    Assert.assertTrue(bytes.size() > 0);
    Sketch<DoubleSummary> sketch = Sketches.heapifySketch(Memory.wrap(bytes.get()), new DoubleSummaryDeserializer());
    Assert.assertEquals(sketch.getEstimate(), 8.0, 0.0);
    SketchIterator<DoubleSummary> it = sketch.iterator();
    while (it.next()) {
        Assert.assertEquals(it.getSummary().getValue(), 3.0);
    }
}

Example 2 with DoubleSummary

use of com.yahoo.sketches.tuple.DoubleSummary in project sketches-pig by DataSketches.

the class DataToDoubleSummarySketchTest method execEmptyBag.

@Test
public void execEmptyBag() throws Exception {
    EvalFunc<Tuple> func = new DataToDoubleSummarySketch();
    Tuple inputTuple = PigUtil.objectsToTuple(BagFactory.getInstance().newDefaultBag());
    Tuple resultTuple = func.exec(inputTuple);
    Assert.assertNotNull(resultTuple);
    Assert.assertEquals(resultTuple.size(), 1);
    DataByteArray bytes = (DataByteArray) resultTuple.get(0);
    Assert.assertTrue(bytes.size() > 0);
    Sketch<DoubleSummary> sketch = Sketches.heapifySketch(Memory.wrap(bytes.get()), new DoubleSummaryDeserializer());
    Assert.assertEquals(sketch.getEstimate(), 0.0);
}

Example 3 with DoubleSummary

use of com.yahoo.sketches.tuple.DoubleSummary in project sketches-pig by DataSketches.

the class DoubleSummarySketchToEstimatesTest method normalCase.

@Test
public void normalCase() throws Exception {
    EvalFunc<Tuple> func = new DoubleSummarySketchToEstimates();
    UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).build();
    int iterations = 100000;
    for (int i = 0; i < iterations; i++) sketch.update(i, 1.0);
    for (int i = 0; i < iterations; i++) sketch.update(i, 1.0);
    Tuple inputTuple = PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()));
    Tuple resultTuple = func.exec(inputTuple);
    Assert.assertNotNull(resultTuple);
    Assert.assertEquals(resultTuple.size(), 2);
    Assert.assertEquals((double) resultTuple.get(0), iterations, iterations * 0.03);
    Assert.assertEquals((double) resultTuple.get(1), 2 * iterations, 2 * iterations * 0.03);
}

Example 4 with DoubleSummary

use of com.yahoo.sketches.tuple.DoubleSummary in project sketches-pig by DataSketches.

the class DoubleSummarySketchToPercentileTest method emptySketch.

@Test
public void emptySketch() throws Exception {
    EvalFunc<Double> func = new DoubleSummarySketchToPercentile();
    UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).build();
    Tuple inputTuple = TupleFactory.getInstance().newTuple(Arrays.asList(new DataByteArray(sketch.compact().toByteArray()), 0.0));
    double result = func.exec(inputTuple);
    Assert.assertEquals(result, Double.NaN);
}

Example 5 with DoubleSummary

use of com.yahoo.sketches.tuple.DoubleSummary in project sketches-pig by DataSketches.

the class UnionDoubleSummarySketchTest method exec.

@Test
public void exec() throws Exception {
    EvalFunc<Tuple> func = new UnionDoubleSummarySketch("4096");
    DataBag bag = BagFactory.getInstance().newDefaultBag();
    {
        UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).build();
        sketch.update(1, 1.0);
        sketch.update(2, 1.0);
        bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray())));
    }
    {
        UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).build();
        sketch.update(1, 1.0);
        sketch.update(2, 1.0);
        bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray())));
    }
    Tuple resultTuple = func.exec(PigUtil.objectsToTuple(bag));
    Assert.assertNotNull(resultTuple);
    Assert.assertEquals(resultTuple.size(), 1);
    DataByteArray bytes = (DataByteArray) resultTuple.get(0);
    Assert.assertTrue(bytes.size() > 0);
    Sketch<DoubleSummary> sketch = Sketches.heapifySketch(Memory.wrap(bytes.get()), new DoubleSummaryDeserializer());
    Assert.assertEquals(sketch.getEstimate(), 2.0, 0.0);
    SketchIterator<DoubleSummary> it = sketch.iterator();
    while (it.next()) {
        Assert.assertEquals(it.getSummary().getValue(), 2.0, 0.0);
    }
}