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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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package org.apache.datasketches.hive.theta;
import static org.apache.datasketches.Util.DEFAULT_UPDATE_SEED;
import java.util.Arrays;
import java.util.List;
import org.apache.datasketches.hive.common.BytesWritableHelper;
import org.apache.datasketches.theta.Sketch;
import org.apache.datasketches.theta.Sketches;
import org.apache.datasketches.theta.UpdateSketch;
import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
import org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.Mode;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFParameterInfo;
import org.apache.hadoop.hive.ql.udf.generic.SimpleGenericUDAFParameterInfo;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector.PrimitiveCategory;
import org.apache.hadoop.hive.serde2.objectinspector.StructField;
import org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.LongWritable;
import org.testng.Assert;
import org.testng.annotations.Test;
@SuppressWarnings({"javadoc","resource"})
public class IntersectSketchUDAFTest {
static final ObjectInspector longInspector =
PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.LONG);
static final ObjectInspector binaryInspector =
PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.BINARY);
static final ObjectInspector structInspector = ObjectInspectorFactory.getStandardStructObjectInspector(
Arrays.asList("seed", "sketch"),
Arrays.asList(longInspector, binaryInspector)
);
@Test(expectedExceptions = UDFArgumentException.class)
public void getEvaluatorTooFewInspectors() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
new IntersectSketchUDAF().getEvaluator(info);
}
@Test(expectedExceptions = UDFArgumentException.class)
public void getEvaluatorTooManyInspectors() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { binaryInspector, longInspector, longInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
new IntersectSketchUDAF().getEvaluator(info);
}
@Test(expectedExceptions = UDFArgumentTypeException.class)
public void getEvaluatorWrongCategoryArg1() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { structInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
new IntersectSketchUDAF().getEvaluator(info);
}
@Test(expectedExceptions = UDFArgumentTypeException.class)
public void getEvaluatorWrongTypeArg1() throws Exception {
ObjectInspector intInspector =
PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.INT);
ObjectInspector[] inspectors = new ObjectInspector[] { intInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
new IntersectSketchUDAF().getEvaluator(info);
}
@Test(expectedExceptions = UDFArgumentException.class)
public void getEvaluatorWrongCategoryArg2() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { binaryInspector, structInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
new IntersectSketchUDAF().getEvaluator(info);
}
@Test(expectedExceptions = UDFArgumentException.class)
public void getEvaluatorWrongTypeArg2() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { binaryInspector, binaryInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
new IntersectSketchUDAF().getEvaluator(info);
}
// PARTIAL1 mode (Map phase in Map-Reduce): iterate + terminatePartial
@Test
public void partia1lDefaultSeed() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { binaryInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
try (GenericUDAFEvaluator eval = new IntersectSketchUDAF().getEvaluator(info)) {
ObjectInspector resultInspector = eval.init(Mode.PARTIAL1, inspectors);
checkIntermediateResultInspector(resultInspector);
IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState state =
(IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState) eval.getNewAggregationBuffer();
UpdateSketch sketch1 = UpdateSketch.builder().build();
sketch1.update(1);
sketch1.update(2);
sketch1.update(3);
eval.iterate(state, new Object[] { new BytesWritable(sketch1.toByteArray()) });
UpdateSketch sketch2 = UpdateSketch.builder().build();
sketch2.update(2);
sketch2.update(3);
sketch2.update(4);
eval.iterate(state, new Object[] { new BytesWritable(sketch2.toByteArray()) });
Object result = eval.terminatePartial(state);
Assert.assertNotNull(result);
Assert.assertTrue(result instanceof List);
List<?> r = (List<?>) result;
Assert.assertEquals(r.size(), 2);
Assert.assertEquals(((LongWritable) r.get(0)).get(), DEFAULT_UPDATE_SEED);
Sketch resultSketch = Sketches.wrapSketch(BytesWritableHelper.wrapAsMemory((BytesWritable) r.get(1)));
Assert.assertEquals(resultSketch.getRetainedEntries(true), 2);
Assert.assertEquals(resultSketch.getEstimate(), 2.0);
}
}
@Test
public void partial1ModeExplicitSeed() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { binaryInspector, longInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
try (GenericUDAFEvaluator eval = new IntersectSketchUDAF().getEvaluator(info)) {
ObjectInspector resultInspector = eval.init(Mode.PARTIAL1, inspectors);
checkIntermediateResultInspector(resultInspector);
final long seed = 1;
IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState state =
(IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState) eval.getNewAggregationBuffer();
UpdateSketch sketch1 = UpdateSketch.builder().setSeed(seed).build();
sketch1.update(1);
sketch1.update(2);
sketch1.update(3);
eval.iterate(state, new Object[] {new BytesWritable(sketch1.toByteArray()), new LongWritable(seed)});
UpdateSketch sketch2 = UpdateSketch.builder().setSeed(seed).build();
sketch2.update(2);
sketch2.update(3);
sketch2.update(4);
eval.iterate(state, new Object[] {new BytesWritable(sketch2.toByteArray()), new LongWritable(seed) });
Object result = eval.terminatePartial(state);
Assert.assertNotNull(result);
Assert.assertTrue(result instanceof List);
List<?> r = (List<?>) result;
Assert.assertEquals(r.size(), 2);
Assert.assertEquals(((LongWritable) r.get(0)).get(), seed);
Sketch resultSketch = Sketches.wrapSketch(BytesWritableHelper.wrapAsMemory((BytesWritable) r.get(1)), seed);
Assert.assertEquals(resultSketch.getRetainedEntries(true), 2);
Assert.assertEquals(resultSketch.getEstimate(), 2.0);
}
}
// PARTIAL2 mode (Combine phase in Map-Reduce): merge + terminatePartial
@Test
public void partial2Mode() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { binaryInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
try (GenericUDAFEvaluator eval = new IntersectSketchUDAF().getEvaluator(info)) {
ObjectInspector resultInspector = eval.init(Mode.PARTIAL2, new ObjectInspector[] {structInspector});
checkIntermediateResultInspector(resultInspector);
IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState state =
(IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState) eval.getNewAggregationBuffer();
UpdateSketch sketch1 = UpdateSketch.builder().build();
sketch1.update(1);
sketch1.update(2);
sketch1.update(3);
eval.merge(state, Arrays.asList(
new LongWritable(DEFAULT_UPDATE_SEED),
new BytesWritable(sketch1.compact().toByteArray()))
);
UpdateSketch sketch2 = UpdateSketch.builder().build();
sketch2.update(2);
sketch2.update(3);
sketch2.update(4);
eval.merge(state, Arrays.asList(
new LongWritable(DEFAULT_UPDATE_SEED),
new BytesWritable(sketch2.compact().toByteArray()))
);
Object result = eval.terminatePartial(state);
Assert.assertNotNull(result);
Assert.assertTrue(result instanceof List);
List<?> r = (List<?>) result;
Assert.assertEquals(r.size(), 2);
Assert.assertEquals(((LongWritable) r.get(0)).get(), DEFAULT_UPDATE_SEED);
Sketch resultSketch = Sketches.wrapSketch(BytesWritableHelper.wrapAsMemory((BytesWritable) r.get(1)));
Assert.assertEquals(resultSketch.getEstimate(), 2.0);
}
}
// FINAL mode (Reduce phase in Map-Reduce): merge + terminate
@Test
public void finalMode() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { binaryInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
try (GenericUDAFEvaluator eval = new IntersectSketchUDAF().getEvaluator(info)) {
ObjectInspector resultInspector = eval.init(Mode.FINAL, new ObjectInspector[] {structInspector});
DataToSketchUDAFTest.checkFinalResultInspector(resultInspector);
IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState state =
(IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState) eval.getNewAggregationBuffer();
UpdateSketch sketch1 = UpdateSketch.builder().build();
sketch1.update(1);
sketch1.update(2);
sketch1.update(3);
eval.merge(state, Arrays.asList(
new LongWritable(DEFAULT_UPDATE_SEED),
new BytesWritable(sketch1.compact().toByteArray())
));
UpdateSketch sketch2 = UpdateSketch.builder().build();
sketch2.update(2);
sketch2.update(3);
sketch2.update(4);
eval.merge(state, Arrays.asList(
new LongWritable(DEFAULT_UPDATE_SEED),
new BytesWritable(sketch2.compact().toByteArray())
));
BytesWritable bytes = (BytesWritable) eval.terminate(state);
Sketch resultSketch = Sketches.wrapSketch(BytesWritableHelper.wrapAsMemory(bytes));
Assert.assertEquals(resultSketch.getRetainedEntries(true), 2);
Assert.assertEquals(resultSketch.getEstimate(), 2.0);
}
}
// COMPLETE mode (single mode, alternative to MapReduce): iterate + terminate
@Test
public void completeModeDefaultSeed() throws Exception {
ObjectInspector[] inspectors = new ObjectInspector[] { binaryInspector };
GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false);
try (GenericUDAFEvaluator eval = new IntersectSketchUDAF().getEvaluator(info)) {
ObjectInspector resultInspector = eval.init(Mode.COMPLETE, inspectors);
DataToSketchUDAFTest.checkFinalResultInspector(resultInspector);
IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState state =
(IntersectSketchUDAF.IntersectSketchUDAFEvaluator.IntersectionState) eval.getNewAggregationBuffer();
UpdateSketch sketch1 = UpdateSketch.builder().build();
sketch1.update(1);
sketch1.update(2);
sketch1.update(3);
eval.iterate(state, new Object[] {new BytesWritable(sketch1.compact().toByteArray())});
UpdateSketch sketch2 = UpdateSketch.builder().build();
sketch2.update(2);
sketch2.update(3);
sketch2.update(4);
eval.iterate(state, new Object[] {new BytesWritable(sketch2.compact().toByteArray())});
Object result = eval.terminate(state);
Assert.assertNotNull(result);
Assert.assertTrue(result instanceof BytesWritable);
Sketch resultSketch = Sketches.wrapSketch(BytesWritableHelper.wrapAsMemory((BytesWritable) result));
Assert.assertEquals(resultSketch.getEstimate(), 2.0);
eval.reset(state);
result = eval.terminate(state);
Assert.assertNull(result);
}
}
private static void checkIntermediateResultInspector(ObjectInspector resultInspector) {
Assert.assertNotNull(resultInspector);
Assert.assertEquals(resultInspector.getCategory(), ObjectInspector.Category.STRUCT);
StructObjectInspector structResultInspector = (StructObjectInspector) resultInspector;
List<?> fields = structResultInspector.getAllStructFieldRefs();
Assert.assertEquals(fields.size(), 2);
ObjectInspector inspector1 = ((StructField) fields.get(0)).getFieldObjectInspector();
Assert.assertEquals(inspector1.getCategory(), ObjectInspector.Category.PRIMITIVE);
PrimitiveObjectInspector primitiveInspector1 = (PrimitiveObjectInspector) inspector1;
Assert.assertEquals(primitiveInspector1.getPrimitiveCategory(), PrimitiveCategory.LONG);
ObjectInspector inspector2 = ((StructField) fields.get(1)).getFieldObjectInspector();
Assert.assertEquals(inspector2.getCategory(), ObjectInspector.Category.PRIMITIVE);
PrimitiveObjectInspector primitiveInspector2 = (PrimitiveObjectInspector) inspector2;
Assert.assertEquals(primitiveInspector2.getPrimitiveCategory(), PrimitiveCategory.BINARY);
}
}
