/*
* Licensed 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 com.facebook.presto.operator.scalar;
import com.facebook.presto.metadata.FunctionKind;
import com.facebook.presto.metadata.FunctionListBuilder;
import com.facebook.presto.metadata.FunctionRegistry;
import com.facebook.presto.metadata.MetadataManager;
import com.facebook.presto.metadata.Signature;
import com.facebook.presto.operator.project.PageProcessor;
import com.facebook.presto.spi.Page;
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.spi.block.BlockBuilder;
import com.facebook.presto.spi.block.BlockBuilderStatus;
import com.facebook.presto.spi.function.Description;
import com.facebook.presto.spi.function.OperatorDependency;
import com.facebook.presto.spi.function.ScalarFunction;
import com.facebook.presto.spi.function.SqlType;
import com.facebook.presto.spi.function.TypeParameter;
import com.facebook.presto.spi.type.StandardTypes;
import com.facebook.presto.spi.type.Type;
import com.facebook.presto.sql.gen.ExpressionCompiler;
import com.facebook.presto.sql.relational.CallExpression;
import com.facebook.presto.sql.relational.RowExpression;
import com.facebook.presto.type.ArrayType;
import com.google.common.collect.ImmutableList;
import io.airlift.slice.Slices;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OperationsPerInvocation;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import org.openjdk.jmh.runner.options.VerboseMode;
import org.openjdk.jmh.runner.options.WarmupMode;
import java.lang.invoke.MethodHandle;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.TimeUnit;
import static com.facebook.presto.operator.scalar.CombineHashFunction.getHash;
import static com.facebook.presto.spi.function.OperatorType.HASH_CODE;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.spi.type.BooleanType.BOOLEAN;
import static com.facebook.presto.spi.type.DoubleType.DOUBLE;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
import static com.facebook.presto.sql.relational.Expressions.field;
import static com.facebook.presto.testing.TestingConnectorSession.SESSION;
import static com.facebook.presto.type.ArrayType.ARRAY_NULL_ELEMENT_MSG;
import static com.facebook.presto.type.TypeUtils.checkElementNotNull;
import static com.facebook.presto.type.TypeUtils.hashPosition;
@SuppressWarnings("MethodMayBeStatic")
@State(Scope.Thread)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Fork(2)
@Warmup(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
@BenchmarkMode(Mode.AverageTime)
public class BenchmarkArrayHashCodeOperator
{
private static final int POSITIONS = 100_000;
private static final int ARRAY_SIZE = 100;
private static final int NUM_TYPES = 4;
@Benchmark
@OperationsPerInvocation(POSITIONS * ARRAY_SIZE * NUM_TYPES)
public List<Page> arrayHashCode(BenchmarkData data)
throws Throwable
{
return ImmutableList.copyOf(data.getPageProcessor().process(SESSION, data.getPage()));
}
@SuppressWarnings("FieldMayBeFinal")
@State(Scope.Thread)
public static class BenchmarkData
{
@Param({"$operator$hash_code", "old_hash", "another_hash"})
private String name = FunctionRegistry.mangleOperatorName(HASH_CODE);
@Param({"BIGINT", "VARCHAR", "DOUBLE", "BOOLEAN"})
private String type = "BIGINT";
private Page page;
private PageProcessor pageProcessor;
@Setup
public void setup()
{
MetadataManager metadata = MetadataManager.createTestMetadataManager();
metadata.addFunctions(new FunctionListBuilder().scalar(BenchmarkOldArrayHash.class).getFunctions());
metadata.addFunctions(new FunctionListBuilder().scalar(BenchmarkAnotherArrayHash.class).getFunctions());
ExpressionCompiler compiler = new ExpressionCompiler(metadata);
ImmutableList.Builder<RowExpression> projectionsBuilder = ImmutableList.builder();
Block[] blocks = new Block[1];
Type elementType;
switch (type) {
case "BIGINT":
elementType = BIGINT;
break;
case "VARCHAR":
elementType = VARCHAR;
break;
case "DOUBLE":
elementType = DOUBLE;
break;
case "BOOLEAN":
elementType = BOOLEAN;
break;
default:
throw new UnsupportedOperationException();
}
ArrayType arrayType = new ArrayType(elementType);
Signature signature = new Signature(name, FunctionKind.SCALAR, BIGINT.getTypeSignature(), arrayType.getTypeSignature());
projectionsBuilder.add(new CallExpression(signature, BIGINT, ImmutableList.of(field(0, arrayType))));
blocks[0] = createChannel(POSITIONS, ARRAY_SIZE, arrayType);
ImmutableList<RowExpression> projections = projectionsBuilder.build();
pageProcessor = compiler.compilePageProcessor(Optional.empty(), projections).get();
page = new Page(blocks);
}
private static Block createChannel(int positionCount, int arraySize, ArrayType arrayType)
{
BlockBuilder blockBuilder = arrayType.createBlockBuilder(new BlockBuilderStatus(), positionCount);
for (int position = 0; position < positionCount; position++) {
BlockBuilder entryBuilder = blockBuilder.beginBlockEntry();
for (int i = 0; i < arraySize; i++) {
if (arrayType.getElementType().getJavaType() == long.class) {
arrayType.getElementType().writeLong(entryBuilder, ThreadLocalRandom.current().nextLong());
}
else if (arrayType.getElementType().getJavaType() == double.class) {
arrayType.getElementType().writeDouble(entryBuilder, ThreadLocalRandom.current().nextDouble());
}
else if (arrayType.getElementType().getJavaType() == boolean.class) {
arrayType.getElementType().writeBoolean(entryBuilder, ThreadLocalRandom.current().nextBoolean());
}
else if (arrayType.getElementType().equals(VARCHAR)) {
arrayType.getElementType().writeSlice(entryBuilder, Slices.utf8Slice("test_string"));
}
else {
throw new UnsupportedOperationException();
}
}
blockBuilder.closeEntry();
}
return blockBuilder.build();
}
public PageProcessor getPageProcessor()
{
return pageProcessor;
}
public Page getPage()
{
return page;
}
}
public static void main(String[] args)
throws Throwable
{
// assure the benchmarks are valid before running
BenchmarkData data = new BenchmarkData();
data.setup();
new BenchmarkArrayHashCodeOperator().arrayHashCode(data);
Options options = new OptionsBuilder()
.verbosity(VerboseMode.NORMAL)
.warmupMode(WarmupMode.BULK)
.include(".*" + BenchmarkArrayHashCodeOperator.class.getSimpleName() + ".*")
.build();
new Runner(options).run();
}
@ScalarFunction("old_hash")
@Description("Only for benchmark array hash code operator")
public static final class BenchmarkOldArrayHash
{
private BenchmarkOldArrayHash() {}
@TypeParameter("T")
@SqlType(StandardTypes.BIGINT)
public static long oldHash(
@OperatorDependency(operator = HASH_CODE, returnType = StandardTypes.BIGINT, argumentTypes = "T") MethodHandle hashFunction,
@TypeParameter("T") Type type,
@SqlType("array(T)") Block block)
{
int hash = 0;
for (int i = 0; i < block.getPositionCount(); i++) {
checkElementNotNull(block.isNull(i), ARRAY_NULL_ELEMENT_MSG);
hash = (int) getHash(hash, type.hash(block, i));
}
return hash;
}
}
@ScalarFunction("another_hash")
@Description("Only for benchmark array hash code operator")
public static final class BenchmarkAnotherArrayHash
{
private BenchmarkAnotherArrayHash() {}
@TypeParameter("T")
@SqlType(StandardTypes.BIGINT)
public static long anotherHash(
@OperatorDependency(operator = HASH_CODE, returnType = StandardTypes.BIGINT, argumentTypes = "T") MethodHandle hashFunction,
@TypeParameter("T") Type type,
@SqlType("array(T)") Block block)
{
int hash = 0;
for (int i = 0; i < block.getPositionCount(); i++) {
checkElementNotNull(block.isNull(i), ARRAY_NULL_ELEMENT_MSG);
hash = (int) getHash(hash, hashPosition(hashFunction, type, block, i));
}
return hash;
}
}
}