| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.datasketches.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 org.apache.datasketches.memory.Memory; |
| import org.apache.datasketches.tuple.ArrayOfDoublesSketch; |
| import org.apache.datasketches.tuple.ArrayOfDoublesSketches; |
| import org.apache.datasketches.tuple.ArrayOfDoublesUpdatableSketch; |
| import org.apache.datasketches.tuple.ArrayOfDoublesUpdatableSketchBuilder; |
| |
| @SuppressWarnings("javadoc") |
| public class UnionArrayOfDoublesSketchTest { |
| |
| @Test |
| public void execNullInput() throws Exception { |
| EvalFunc<Tuple> func = new UnionArrayOfDoublesSketch("32", "1"); |
| Tuple resultTuple = func.exec(null); |
| Assert.assertNull(resultTuple); |
| } |
| |
| @Test |
| public void execEmptyInputTuple() throws Exception { |
| EvalFunc<Tuple> func = new UnionArrayOfDoublesSketch("32", "1"); |
| Tuple resultTuple = func.exec(TupleFactory.getInstance().newTuple()); |
| Assert.assertNull(resultTuple); |
| } |
| |
| @Test |
| public void exec() throws Exception { |
| EvalFunc<Tuple> func = new UnionArrayOfDoublesSketch("4096", "1"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| sketch.update(1, new double[] {1.0}); |
| sketch.update(2, new double[] {1.0}); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| } |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| sketch.update(1, new double[] {1.0}); |
| sketch.update(2, new double[] {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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 2.0, 0.0); |
| for (double[] values: sketch.getValues()) { |
| Assert.assertEquals(values[0], 2.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void accumulatorNullInput() throws Exception { |
| Accumulator<Tuple> func = new UnionArrayOfDoublesSketch(); |
| 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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 0.0); |
| } |
| |
| @Test |
| public void accumulatorEmptyInputTuple() throws Exception { |
| Accumulator<Tuple> func = new UnionArrayOfDoublesSketch(); |
| 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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 0.0); |
| } |
| |
| @Test |
| public void accumulatorNotABag() throws Exception { |
| Accumulator<Tuple> func = new UnionArrayOfDoublesSketch(); |
| 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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 0.0); |
| } |
| |
| @Test |
| public void accumulatorEmptyBag() throws Exception { |
| Accumulator<Tuple> func = new UnionArrayOfDoublesSketch(); |
| 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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 0.0); |
| } |
| |
| @Test |
| public void accumulatorEmptyInnerTuple() throws Exception { |
| Accumulator<Tuple> func = new UnionArrayOfDoublesSketch(); |
| 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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 0.0); |
| } |
| |
| @Test |
| public void accumulatorNullSketch() throws Exception { |
| Accumulator<Tuple> func = new UnionArrayOfDoublesSketch(); |
| 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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 0.0); |
| } |
| |
| @Test |
| public void accumulatorEmptySketch() throws Exception { |
| Accumulator<Tuple> func = new UnionArrayOfDoublesSketch("1"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 0.0); |
| } |
| |
| @Test |
| public void accumulator() throws Exception { |
| Accumulator<Tuple> func = new UnionArrayOfDoublesSketch("4096", "1"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| sketch.update(1, new double[] {1.0}); |
| sketch.update(2, new double[] {1.0}); |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| } |
| func.accumulate(PigUtil.objectsToTuple(bag)); |
| |
| bag = BagFactory.getInstance().newDefaultBag(); |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| sketch.update(1, new double[] {1.0}); |
| sketch.update(2, new double[] {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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 2.0, 0.0); |
| for (double[] values: sketch.getValues()) { |
| Assert.assertEquals(values[0], 2.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void algebraicInitial() throws Exception { |
| EvalFunc<Tuple> func = new UnionArrayOfDoublesSketch.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 algebraicIntemediateFinalExact() throws Exception { |
| EvalFunc<Tuple> func = new UnionArrayOfDoublesSketch.IntermediateFinal("1"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| |
| // this is to simulate the output from Initial |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| sketch.update(1, new double[] {1.0}); |
| sketch.update(2, new double[] {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 |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| sketch.update(1, new double[] {1.0}); |
| sketch.update(2, new double[] {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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 2.0, 0.0); |
| for (double[] values: sketch.getValues()) { |
| Assert.assertEquals(values[0], 2.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void algebraicIntemediateFinalEstimation() throws Exception { |
| EvalFunc<Tuple> func = new UnionArrayOfDoublesSketch.IntermediateFinal("16384", "1"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| |
| long value = 1; |
| // this is to simulate the output from Initial |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 20000; i++) { |
| sketch.update(value++, new double[] {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 |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 20000; i++) { |
| sketch.update(value++, new double[] {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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 40000.0, 40000.0 * 0.01); |
| for (double[] values: sketch.getValues()) { |
| Assert.assertEquals(values[0], 1.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void algebraicIntemediateFinalSingleCall() throws Exception { |
| EvalFunc<Tuple> func = new UnionArrayOfDoublesSketch.IntermediateFinal("1024", "1"); |
| DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| |
| long value = 1; |
| // this is to simulate the output from a prior call of IntermediateFinal |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(1024).build(); |
| for (int i = 0; i < 10000; i++) { |
| sketch.update(value++, new double[] {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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), 10000.0, 10000.0 * 0.02); |
| for (double[] values: sketch.getValues()) { |
| Assert.assertEquals(values[0], 1.0, 0.0); |
| } |
| } |
| |
| @Test |
| public void algebraicIntemediateFinalRandomized() throws Exception { |
| EvalFunc<Tuple> func = new UnionArrayOfDoublesSketch.IntermediateFinal("16384", "1"); |
| 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 |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 40000; i++) { |
| sketch.update(key++, new double[] {rnd.nextDouble() * 20}); |
| } |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 40000; |
| } |
| key -= 20000; // overlap |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 60000; i++) { |
| sketch.update(key++, new double[] {rnd.nextDouble() * 20}); |
| } |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 60000; |
| } |
| key -= 20000; // overlap |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 60000; i++) { |
| sketch.update(key++, new double[] {rnd.nextDouble() * 20}); |
| } |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 60000; |
| } |
| key -= 20000; // overlap |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 60000; i++) { |
| sketch.update(key++, new double[] {rnd.nextDouble() * 20}); |
| } |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 60000; |
| } |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 40000; i++) { |
| sketch.update(key++, new double[] {rnd.nextDouble() * 20}); |
| } |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 40000; |
| } |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 40000; i++) { |
| sketch.update(key++, new double[] {rnd.nextDouble() * 20}); |
| } |
| bag.add(PigUtil.objectsToTuple(new DataByteArray(sketch.compact().toByteArray()))); |
| uniques += 40000; |
| updates += 40000; |
| } |
| key -= 20000; // overlap |
| { |
| ArrayOfDoublesUpdatableSketch sketch = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(16384).build(); |
| for (int i = 0; i < 60000; i++) { |
| sketch.update(key++, new double[] {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); |
| ArrayOfDoublesSketch sketch = ArrayOfDoublesSketches.heapifySketch(Memory.wrap(bytes.get())); |
| Assert.assertEquals(sketch.getEstimate(), uniques, uniques * 0.01); |
| double sum = 0; |
| for (double[] values: sketch.getValues()) { |
| sum += values[0]; |
| } |
| // 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 |
| } |
| } |