| /* |
| * Copyright 2016, Yahoo! Inc. |
| * Licensed under the terms of the Apache License 2.0. See LICENSE file at the project root for terms. |
| */ |
| package com.yahoo.sketches.pig.tuple; |
| |
| import java.util.Random; |
| |
| import org.apache.pig.Accumulator; |
| import org.apache.pig.EvalFunc; |
| import org.apache.pig.data.BagFactory; |
| import org.apache.pig.data.DataBag; |
| import org.apache.pig.data.DataByteArray; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.data.TupleFactory; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| import com.yahoo.memory.Memory; |
| import com.yahoo.sketches.tuple.Sketch; |
| import com.yahoo.sketches.tuple.SketchIterator; |
| import com.yahoo.sketches.tuple.Sketches; |
| import com.yahoo.sketches.tuple.UpdatableSketch; |
| import com.yahoo.sketches.tuple.UpdatableSketchBuilder; |
| import com.yahoo.sketches.tuple.adouble.DoubleSummary; |
| import com.yahoo.sketches.tuple.adouble.DoubleSummaryDeserializer; |
| import com.yahoo.sketches.tuple.adouble.DoubleSummaryFactory; |
| |
| public class UnionDoubleSummarySketchTest { |
| |
| @Test |
| public void execNullInput() throws Exception { |
| EvalFunc<Tuple> func = new UnionDoubleSummarySketch(); |
| Tuple resultTuple = func.exec(null); |
| Assert.assertNull(resultTuple); |
| } |
| |
| @Test |
| public void execEmptyInputTuple() throws Exception { |
| EvalFunc<Tuple> func = new UnionDoubleSummarySketch(); |
| Tuple resultTuple = func.exec(TupleFactory.getInstance().newTuple()); |
| Assert.assertNull(resultTuple); |
| } |
| |
| @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); |
| } |
| } |
| |
| @Test |
| public void execMaxMode() throws Exception { |
| EvalFunc<Tuple> func = new UnionDoubleSummarySketch("4096", "Max"); |
| 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, 3.0); |
| sketch.update(2, 3.0); |
| 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(), 3.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void accumulatorNullInput() throws Exception { |
| Accumulator<Tuple> func = new UnionDoubleSummarySketch("32"); |
| func.accumulate(null); |
| Tuple resultTuple = func.getValue(); |
| 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); |
| } |
| |
| @Test |
| public void accumulatorEmptyInputTuple() throws Exception { |
| Accumulator<Tuple> func = new UnionDoubleSummarySketch("32"); |
| func.accumulate(TupleFactory.getInstance().newTuple()); |
| Tuple resultTuple = func.getValue(); |
| 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); |
| } |
| |
| @Test |
| public void accumulatorNotABag() throws Exception { |
| Accumulator<Tuple> func = new UnionDoubleSummarySketch("32"); |
| func.accumulate(PigUtil.objectsToTuple((Object) null)); |
| Tuple resultTuple = func.getValue(); |
| 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); |
| } |
| |
| @Test |
| public void accumulatorEmptyBag() throws Exception { |
| Accumulator<Tuple> func = new UnionDoubleSummarySketch("32"); |
| func.accumulate(PigUtil.objectsToTuple(BagFactory.getInstance().newDefaultBag())); |
| Tuple resultTuple = func.getValue(); |
| 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); |
| } |
| |
| @Test |
| public void accumulatorEmptyInnerTuple() throws Exception { |
| Accumulator<Tuple> func = new UnionDoubleSummarySketch("32"); |
| func.accumulate(PigUtil.objectsToTuple(PigUtil.tuplesToBag(TupleFactory.getInstance().newTuple()))); |
| Tuple resultTuple = func.getValue(); |
| 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); |
| } |
| |
| @Test |
| public void accumulatorNullSketch() throws Exception { |
| Accumulator<Tuple> func = new UnionDoubleSummarySketch("32"); |
| func.accumulate(PigUtil.objectsToTuple(PigUtil.tuplesToBag(PigUtil.objectsToTuple((Object) null)))); |
| Tuple resultTuple = func.getValue(); |
| 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); |
| } |
| |
| @Test |
| public void accumulatorEmptySketch() throws Exception { |
| Accumulator<Tuple> func = new UnionDoubleSummarySketch("4096"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).build(); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| } |
| func.accumulate(PigUtil.objectsToTuple(bag)); |
| Tuple resultTuple = func.getValue(); |
| 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); |
| } |
| |
| @Test |
| public void accumulator() throws Exception { |
| Accumulator<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()))); |
| } |
| func.accumulate(PigUtil.objectsToTuple(bag)); |
| |
| 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()))); |
| } |
| func.accumulate(PigUtil.objectsToTuple(bag)); |
| |
| Tuple resultTuple = func.getValue(); |
| 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); |
| } |
| } |
| |
| @Test |
| public void algebraicInitial() throws Exception { |
| EvalFunc<Tuple> func = new UnionDoubleSummarySketch.Initial(null); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| bag.add(null); |
| bag.add(null); |
| bag.add(null); |
| |
| Tuple resultTuple = func.exec(PigUtil.objectsToTuple(bag)); |
| Assert.assertNotNull(resultTuple); |
| Assert.assertEquals(resultTuple.size(), 1); |
| DataBag resultBag = (DataBag) resultTuple.get(0); |
| Assert.assertEquals(resultBag.size(), 3); |
| } |
| |
| @Test |
| public void algebraicIntemediateFinalExactMinMode() throws Exception { |
| EvalFunc<Tuple> func = new UnionDoubleSummarySketch.IntermediateFinal("4096", "Min"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| |
| // this is to simulate the output from Initial |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).build(); |
| sketch.update(1, 1.0); |
| sketch.update(2, 1.0); |
| DataBag innerBag = PigUtil.tuplesToBag(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| bag.add(PigUtil.objectsToTuple(innerBag)); |
| } |
| |
| // this is to simulate the output from a prior call of IntermediateFinal |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).build(); |
| sketch.update(1, 3.0); |
| sketch.update(2, 3.0); |
| 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(), 1.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void algebraicIntemediateFinalEstimation() throws Exception { |
| EvalFunc<Tuple> func = new UnionDoubleSummarySketch.IntermediateFinal("16384"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| |
| long value = 1; |
| // this is to simulate the output from Initial |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 20000; i++) sketch.update(value++, 1.0); |
| DataBag innerBag = PigUtil.tuplesToBag(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| bag.add(PigUtil.objectsToTuple(innerBag)); |
| } |
| |
| // this is to simulate the output from a prior call of IntermediateFinal |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 20000; i++) sketch.update(value++, 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(), 40000.0, 40000.0 * 0.01); |
| SketchIterator<DoubleSummary> it = sketch.iterator(); |
| while (it.next()) { |
| Assert.assertEquals(it.getSummary().getValue(), 1.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void algebraicIntemediateFinalSingleCall() throws Exception { |
| EvalFunc<Tuple> func = new UnionDoubleSummarySketch.IntermediateFinal("1024"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| |
| long value = 1; |
| // this is to simulate the output from a prior call of IntermediateFinal |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(1024).build(); |
| for (int i = 0; i < 10000; i++) sketch.update(value++, 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(), 10000.0, 10000.0 * 0.02); |
| SketchIterator<DoubleSummary> it = sketch.iterator(); |
| while (it.next()) { |
| Assert.assertEquals(it.getSummary().getValue(), 1.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void algebraicIntemediateFinalRandomized() throws Exception { |
| EvalFunc<Tuple> func = new UnionDoubleSummarySketch.IntermediateFinal("16384"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| |
| long key = 1; |
| Random rnd = new Random(); |
| long uniques = 0; |
| long updates = 0; |
| // this is to simulate the output from a prior call of IntermediateFinal |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 40000; i++) sketch.update(key++, rnd.nextDouble() * 20); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 40000; |
| } |
| key -= 20000; // overlap |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 60000; i++) sketch.update(key++, rnd.nextDouble() * 20); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 60000; |
| } |
| key -= 20000; // overlap |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 60000; i++) sketch.update(key++, rnd.nextDouble() * 20); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 60000; |
| } |
| key -= 20000; // overlap |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 60000; i++) sketch.update(key++, rnd.nextDouble() * 20); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 60000; |
| } |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 40000; i++) sketch.update(key++, rnd.nextDouble() * 20); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 40000; |
| } |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 40000; i++) sketch.update(key++, rnd.nextDouble() * 20); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 40000; |
| } |
| key -= 20000; // overlap |
| { |
| UpdatableSketch<Double, DoubleSummary> sketch = new UpdatableSketchBuilder<Double, DoubleSummary>(new DoubleSummaryFactory()).setNominalEntries(16384).build(); |
| for (int i = 0; i < 60000; i++) sketch.update(key++, rnd.nextDouble() * 20); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 60000; |
| } |
| |
| 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(), uniques, uniques * 0.01); |
| double sum = 0; |
| SketchIterator<DoubleSummary> it = sketch.iterator(); |
| while (it.next()) { |
| sum += it.getSummary().getValue(); |
| } |
| // each update added 10 to the total on average |
| Assert.assertEquals(sum / sketch.getTheta(), updates * 10.0, updates * 10.0 * 0.02); // there is a slight chance of failing here |
| } |
| } |