| /******************************************************************************* |
| * Copyright 2015, 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.hive.theta; |
| |
| import static com.yahoo.sketches.Util.DEFAULT_NOMINAL_ENTRIES; |
| import static com.yahoo.sketches.Util.DEFAULT_UPDATE_SEED; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.apache.hadoop.hive.ql.exec.UDFArgumentException; |
| import org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException; |
| import org.apache.hadoop.hive.ql.parse.SemanticException; |
| 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.io.DoubleWritable; |
| 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.hive.serde2.typeinfo.TypeInfoFactory; |
| import org.apache.hadoop.io.BytesWritable; |
| import org.apache.hadoop.io.FloatWritable; |
| import org.apache.hadoop.io.IntWritable; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| import com.yahoo.memory.Memory; |
| import com.yahoo.sketches.theta.SetOperation; |
| import com.yahoo.sketches.theta.Sketch; |
| import com.yahoo.sketches.theta.Sketches; |
| import com.yahoo.sketches.theta.Union; |
| import com.yahoo.sketches.theta.UpdateSketch; |
| |
| /** |
| * Unit tests for DataToSketch UDF |
| */ |
| public class DataToSketchUDAFTest { |
| |
| static final ObjectInspector intInspector = |
| PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.INT); |
| |
| static final ObjectInspector doubleInspector = |
| PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.DOUBLE); |
| |
| static final ObjectInspector stringInspector = |
| PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.STRING); |
| |
| static final ObjectInspector intConstantInspector = |
| PrimitiveObjectInspectorFactory.getPrimitiveWritableConstantObjectInspector(TypeInfoFactory.intTypeInfo, null); |
| |
| static final ObjectInspector floatConstantInspector = |
| PrimitiveObjectInspectorFactory.getPrimitiveWritableConstantObjectInspector(TypeInfoFactory.floatTypeInfo, null); |
| |
| static final ObjectInspector longConstantInspector = |
| PrimitiveObjectInspectorFactory.getPrimitiveWritableConstantObjectInspector(TypeInfoFactory.longTypeInfo, null); |
| |
| static final ObjectInspector binaryInspector = |
| PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(PrimitiveCategory.BINARY); |
| |
| static final ObjectInspector structInspector = ObjectInspectorFactory.getStandardStructObjectInspector( |
| Arrays.asList("nominalEntries", "seed", "sketch"), |
| Arrays.asList(intConstantInspector, longConstantInspector, binaryInspector) |
| ); |
| |
| @Test(expectedExceptions = { UDFArgumentException.class }) |
| public void initTooFewArguments() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo(new ObjectInspector[] {}, false, false, false); |
| |
| udf.getEvaluator(params); |
| } |
| |
| @Test(expectedExceptions = { UDFArgumentException.class }) |
| public void initTooManyArguments() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo(new ObjectInspector[] { |
| intInspector, intConstantInspector, floatConstantInspector, longConstantInspector, longConstantInspector |
| }, false, false, false); |
| udf.getEvaluator(params); |
| } |
| |
| @Test(expectedExceptions = { UDFArgumentTypeException.class }) |
| public void initInvalidCategoryArg1() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo( |
| new ObjectInspector[] { structInspector }, false, false, false); |
| udf.getEvaluator(params); |
| } |
| |
| @Test(expectedExceptions = { UDFArgumentTypeException.class }) |
| public void initInvalidCategoryArg2() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo( |
| new ObjectInspector[] { intInspector, structInspector }, false, false, false); |
| udf.getEvaluator(params); |
| } |
| |
| @Test(expectedExceptions = { UDFArgumentTypeException.class }) |
| public void initInvalidTypeArg2() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo( |
| new ObjectInspector[] { intInspector, floatConstantInspector }, false, false, false); |
| udf.getEvaluator(params); |
| } |
| |
| @Test(expectedExceptions = { UDFArgumentTypeException.class }) |
| public void initInvalidCategoryArg3() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo( |
| new ObjectInspector[] { stringInspector, intConstantInspector, structInspector }, false, false, false); |
| udf.getEvaluator(params); |
| } |
| |
| @Test(expectedExceptions = { UDFArgumentTypeException.class }) |
| public void initInvalidTypeArg3() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo( |
| new ObjectInspector[] { stringInspector, intConstantInspector, intConstantInspector }, false, false, false); |
| udf.getEvaluator(params); |
| } |
| |
| @Test(expectedExceptions = { UDFArgumentTypeException.class }) |
| public void initInvalidCategoryArg4() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo( |
| new ObjectInspector[] { stringInspector, intConstantInspector, floatConstantInspector, structInspector }, false, false, false); |
| udf.getEvaluator(params); |
| } |
| |
| @Test(expectedExceptions = { UDFArgumentTypeException.class }) |
| public void initInvalidTypeArg4() throws SemanticException { |
| DataToSketchUDAF udf = new DataToSketchUDAF(); |
| GenericUDAFParameterInfo params = new SimpleGenericUDAFParameterInfo( |
| new ObjectInspector[] { stringInspector, intConstantInspector, floatConstantInspector, floatConstantInspector }, false, false, false); |
| udf.getEvaluator(params); |
| } |
| |
| // PARTIAL1 mode (Map phase in Map-Reduce): iterate + terminatePartial |
| @Test |
| public void partial1ModeIntValuesDefaultParams() throws Exception { |
| ObjectInspector[] inspectors = new ObjectInspector[] { intInspector }; |
| GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false); |
| try (GenericUDAFEvaluator eval = new DataToSketchUDAF().getEvaluator(info)) { |
| ObjectInspector resultInspector = eval.init(Mode.PARTIAL1, inspectors); |
| checkIntermediateResultInspector(resultInspector); |
| |
| UnionState state = (UnionState) eval.getNewAggregationBuffer(); |
| eval.iterate(state, new Object[] {new IntWritable(1)}); |
| eval.iterate(state, new Object[] {new IntWritable(2)}); |
| |
| Object result = eval.terminatePartial(state); |
| Assert.assertNotNull(result); |
| Assert.assertTrue(result instanceof List); |
| List<?> r = (List<?>) result; |
| Assert.assertEquals(r.size(), 3); |
| Assert.assertEquals(((IntWritable) (r.get(0))).get(), DEFAULT_NOMINAL_ENTRIES); |
| Assert.assertEquals(((LongWritable) (r.get(1))).get(), DEFAULT_UPDATE_SEED); |
| Sketch resultSketch = Sketches.wrapSketch(Memory.wrap(((BytesWritable) (r.get(2))).getBytes())); |
| Assert.assertFalse(resultSketch.isEstimationMode()); |
| Assert.assertEquals(resultSketch.getEstimate(), 2.0); |
| } |
| } |
| |
| @Test |
| public void partial1ModeStringValuesExplicitParameters() throws Exception { |
| ObjectInspector[] inspectors = new ObjectInspector[] { stringInspector, intConstantInspector, floatConstantInspector, longConstantInspector }; |
| GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false); |
| try (GenericUDAFEvaluator eval = new DataToSketchUDAF().getEvaluator(info)) { |
| ObjectInspector resultInspector = eval.init(Mode.PARTIAL1, inspectors); |
| checkIntermediateResultInspector(resultInspector); |
| |
| final long seed = 1; |
| UnionState state = (UnionState) eval.getNewAggregationBuffer(); |
| eval.iterate(state, new Object[] {new Text("a"), new IntWritable(16), new FloatWritable(0.99f), new LongWritable(seed)}); |
| eval.iterate(state, new Object[] {new Text("b"), new IntWritable(16), new FloatWritable(0.99f), new LongWritable(seed)}); |
| |
| Object result = eval.terminatePartial(state); |
| Assert.assertNotNull(result); |
| Assert.assertTrue(result instanceof List); |
| List<?> r = (List<?>) result; |
| Assert.assertEquals(r.size(), 3); |
| Assert.assertEquals(((IntWritable) (r.get(0))).get(), 16); |
| Assert.assertEquals(((LongWritable) (r.get(1))).get(), seed); |
| Sketch resultSketch = Sketches.wrapSketch(Memory.wrap(((BytesWritable) (r.get(2))).getBytes()), seed); |
| // because of sampling probability < 1 |
| Assert.assertTrue(resultSketch.isEstimationMode()); |
| Assert.assertEquals(resultSketch.getEstimate(), 2.0, 0.05); |
| |
| // check if seed is correct in the result |
| Union union = SetOperation.builder().setSeed(seed).buildUnion(); |
| // this must fail if the seed is incompatible |
| union.update(resultSketch); |
| } |
| } |
| |
| // PARTIAL2 mode (Combine phase in Map-Reduce): merge + terminatePartial |
| @Test |
| public void partial2Mode() throws Exception { |
| ObjectInspector[] inspectors = new ObjectInspector[] { intInspector }; |
| GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false); |
| try (GenericUDAFEvaluator eval = new DataToSketchUDAF().getEvaluator(info)) { |
| ObjectInspector resultInspector = eval.init(Mode.PARTIAL2, new ObjectInspector[] {structInspector}); |
| checkIntermediateResultInspector(resultInspector); |
| |
| UnionState state = (UnionState) eval.getNewAggregationBuffer(); |
| |
| UpdateSketch sketch1 = UpdateSketch.builder().build(); |
| sketch1.update(1); |
| eval.merge(state, Arrays.asList( |
| new IntWritable(DEFAULT_NOMINAL_ENTRIES), |
| new LongWritable(DEFAULT_UPDATE_SEED), |
| new BytesWritable(sketch1.compact().toByteArray())) |
| ); |
| |
| UpdateSketch sketch2 = UpdateSketch.builder().build(); |
| sketch2.update(2); |
| eval.merge(state, Arrays.asList( |
| new IntWritable(DEFAULT_NOMINAL_ENTRIES), |
| 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(), 3); |
| Assert.assertEquals(((IntWritable) (r.get(0))).get(), DEFAULT_NOMINAL_ENTRIES); |
| Assert.assertEquals(((LongWritable) (r.get(1))).get(), DEFAULT_UPDATE_SEED); |
| Sketch resultSketch = Sketches.wrapSketch(Memory.wrap(((BytesWritable) (r.get(2))).getBytes())); |
| 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[] { intInspector }; |
| GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false); |
| try (GenericUDAFEvaluator eval = new DataToSketchUDAF().getEvaluator(info)) { |
| ObjectInspector resultInspector = eval.init(Mode.FINAL, new ObjectInspector[] {structInspector}); |
| checkFinalResultInspector(resultInspector); |
| |
| UnionState state = (UnionState) eval.getNewAggregationBuffer(); |
| |
| UpdateSketch sketch1 = UpdateSketch.builder().build(); |
| sketch1.update(1); |
| eval.merge(state, Arrays.asList( |
| new IntWritable(DEFAULT_NOMINAL_ENTRIES), |
| new LongWritable(DEFAULT_UPDATE_SEED), |
| new BytesWritable(sketch1.compact().toByteArray())) |
| ); |
| |
| UpdateSketch sketch2 = UpdateSketch.builder().build(); |
| sketch2.update(2); |
| eval.merge(state, Arrays.asList( |
| new IntWritable(DEFAULT_NOMINAL_ENTRIES), |
| new LongWritable(DEFAULT_UPDATE_SEED), |
| new BytesWritable(sketch2.compact().toByteArray())) |
| ); |
| |
| Object result = eval.terminate(state); |
| Assert.assertNotNull(result); |
| Assert.assertTrue(result instanceof BytesWritable); |
| Sketch resultSketch = Sketches.wrapSketch(Memory.wrap(((BytesWritable) result).getBytes())); |
| Assert.assertEquals(resultSketch.getEstimate(), 2.0); |
| } |
| } |
| |
| // COMPLETE mode (single mode, alternative to MapReduce): iterate + terminate |
| @Test |
| public void completeModeIntValuesDefaultParams() throws Exception { |
| ObjectInspector[] inspectors = new ObjectInspector[] { intInspector }; |
| GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false); |
| try (GenericUDAFEvaluator eval = new DataToSketchUDAF().getEvaluator(info)) { |
| ObjectInspector resultInspector = eval.init(Mode.COMPLETE, inspectors); |
| checkFinalResultInspector(resultInspector); |
| |
| UnionState state = (UnionState) eval.getNewAggregationBuffer(); |
| eval.iterate(state, new Object[] {new IntWritable(1)}); |
| eval.iterate(state, new Object[] {new IntWritable(2)}); |
| |
| Object result = eval.terminate(state); |
| Assert.assertNotNull(result); |
| Assert.assertTrue(result instanceof BytesWritable); |
| Sketch resultSketch = Sketches.wrapSketch(Memory.wrap(((BytesWritable) result).getBytes())); |
| Assert.assertEquals(resultSketch.getEstimate(), 2.0); |
| |
| eval.reset(state); |
| result = eval.terminate(state); |
| Assert.assertNull(result); |
| } |
| } |
| |
| @Test |
| public void completeModeDoubleValuesExplicitParameters() throws Exception { |
| ObjectInspector[] inspectors = new ObjectInspector[] { doubleInspector, intConstantInspector, floatConstantInspector, longConstantInspector }; |
| GenericUDAFParameterInfo info = new SimpleGenericUDAFParameterInfo(inspectors, false, false, false); |
| try (GenericUDAFEvaluator eval = new DataToSketchUDAF().getEvaluator(info)) { |
| ObjectInspector resultInspector = eval.init(Mode.COMPLETE, inspectors); |
| checkFinalResultInspector(resultInspector); |
| |
| final long seed = 2; |
| UnionState state = (UnionState) eval.getNewAggregationBuffer(); |
| eval.iterate(state, new Object[] {new DoubleWritable(1), new IntWritable(16), new FloatWritable(0.99f), new LongWritable(seed)}); |
| eval.iterate(state, new Object[] {new DoubleWritable(2), new IntWritable(16), new FloatWritable(0.99f), new LongWritable(seed)}); |
| |
| Object result = eval.terminate(state); |
| Assert.assertNotNull(result); |
| Assert.assertTrue(result instanceof BytesWritable); |
| Sketch resultSketch = Sketches.wrapSketch(Memory.wrap(((BytesWritable) result).getBytes()), seed); |
| // because of sampling probability < 1 |
| Assert.assertTrue(resultSketch.isEstimationMode()); |
| Assert.assertEquals(resultSketch.getEstimate(), 2.0, 0.05); |
| } |
| } |
| |
| 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(), 3); |
| |
| ObjectInspector inspector1 = ((StructField) fields.get(0)).getFieldObjectInspector(); |
| Assert.assertEquals(inspector1.getCategory(), ObjectInspector.Category.PRIMITIVE); |
| PrimitiveObjectInspector primitiveInspector1 = (PrimitiveObjectInspector) inspector1; |
| Assert.assertEquals(primitiveInspector1.getPrimitiveCategory(), PrimitiveCategory.INT); |
| |
| ObjectInspector inspector2 = ((StructField) fields.get(1)).getFieldObjectInspector(); |
| Assert.assertEquals(inspector2.getCategory(), ObjectInspector.Category.PRIMITIVE); |
| PrimitiveObjectInspector primitiveInspector2 = (PrimitiveObjectInspector) inspector2; |
| Assert.assertEquals(primitiveInspector2.getPrimitiveCategory(), PrimitiveCategory.LONG); |
| |
| ObjectInspector inspector3 = ((StructField) fields.get(2)).getFieldObjectInspector(); |
| Assert.assertEquals(inspector3.getCategory(), ObjectInspector.Category.PRIMITIVE); |
| PrimitiveObjectInspector primitiveInspector3 = (PrimitiveObjectInspector) inspector3; |
| Assert.assertEquals(primitiveInspector3.getPrimitiveCategory(), PrimitiveCategory.BINARY); |
| } |
| |
| static void checkFinalResultInspector(ObjectInspector resultInspector) { |
| Assert.assertNotNull(resultInspector); |
| Assert.assertEquals(resultInspector.getCategory(), ObjectInspector.Category.PRIMITIVE); |
| Assert.assertEquals( |
| ((PrimitiveObjectInspector) resultInspector).getPrimitiveCategory(), |
| PrimitiveObjectInspector.PrimitiveCategory.BINARY |
| ); |
| } |
| |
| } |