/*
* 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.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.ArrayBlock;
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.block.DictionaryBlock;
import com.facebook.presto.spi.block.InterleavedBlock;
import com.facebook.presto.spi.block.SliceArrayBlock;
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.MapType;
import com.google.common.collect.ImmutableList;
import io.airlift.slice.Slice;
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.util.List;
import java.util.Optional;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.TimeUnit;
import static com.facebook.presto.spi.type.DoubleType.DOUBLE;
import static com.facebook.presto.spi.type.VarcharType.createUnboundedVarcharType;
import static com.facebook.presto.sql.relational.Expressions.field;
import static com.facebook.presto.testing.TestingConnectorSession.SESSION;
import static com.facebook.presto.util.StructuralTestUtil.mapType;
import static io.airlift.slice.Slices.utf8Slice;
@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 BenchmarkMapConcat
{
private static final int POSITIONS = 10_000;
@Benchmark
@OperationsPerInvocation(POSITIONS)
public List<Page> mapConcat(BenchmarkData data)
throws Throwable
{
return ImmutableList.copyOf(data.getPageProcessor().process(SESSION, data.getPage()));
}
@SuppressWarnings("FieldMayBeFinal")
@State(Scope.Thread)
public static class BenchmarkData
{
private String name = "map_concat";
@Param({"left_empty", "right_empty", "both_empty", "non_empty"})
private String mapConfig = "left_empty";
private Page page;
private PageProcessor pageProcessor;
@Setup
public void setup()
{
MetadataManager metadata = MetadataManager.createTestMetadataManager();
ExpressionCompiler compiler = new ExpressionCompiler(metadata);
List<String> leftKeys;
List<String> rightKeys;
switch (mapConfig) {
case "left_empty":
leftKeys = ImmutableList.of();
rightKeys = ImmutableList.of("a", "b", "c");
break;
case "right_empty":
leftKeys = ImmutableList.of("a", "b", "c");
rightKeys = ImmutableList.of();
break;
case "both_empty":
leftKeys = ImmutableList.of();
rightKeys = ImmutableList.of();
break;
case "non_empty":
leftKeys = ImmutableList.of("a", "b", "c");
rightKeys = ImmutableList.of("d", "b", "c");
break;
default:
throw new UnsupportedOperationException();
}
MapType mapType = mapType(createUnboundedVarcharType(), DOUBLE);
Block leftKeyBlock = createKeyBlock(POSITIONS, leftKeys);
Block leftValueBlock = createValueBlock(POSITIONS, leftKeys.size());
Block leftBlock = createMapBlock(POSITIONS, leftKeyBlock, leftValueBlock);
Block rightKeyBlock = createKeyBlock(POSITIONS, rightKeys);
Block rightValueBlock = createValueBlock(POSITIONS, rightKeys.size());
Block rightBlock = createMapBlock(POSITIONS, rightKeyBlock, rightValueBlock);
ImmutableList.Builder<RowExpression> projectionsBuilder = ImmutableList.builder();
Signature signature = new Signature(
name,
FunctionKind.SCALAR,
mapType.getTypeSignature(),
mapType.getTypeSignature(),
mapType.getTypeSignature());
projectionsBuilder.add(new CallExpression(
signature,
mapType,
ImmutableList.of(field(0, mapType), field(1, mapType))));
ImmutableList<RowExpression> projections = projectionsBuilder.build();
pageProcessor = compiler.compilePageProcessor(Optional.empty(), projections).get();
page = new Page(leftBlock, rightBlock);
}
public PageProcessor getPageProcessor()
{
return pageProcessor;
}
public Page getPage()
{
return page;
}
private static Block createMapBlock(int positionCount, Block keyBlock, Block valueBlock)
{
InterleavedBlock interleavedBlock = new InterleavedBlock(new Block[]{keyBlock, valueBlock});
int[] offsets = new int[positionCount + 1];
int mapSize = keyBlock.getPositionCount() / positionCount;
for (int i = 0; i < offsets.length; i++) {
offsets[i] = mapSize * 2 * i;
}
return new ArrayBlock(positionCount, new boolean[positionCount], offsets, interleavedBlock);
}
private static Block createKeyBlock(int positionCount, List<String> keys)
{
Block keyDictionaryBlock = createSliceArrayBlock(keys);
int[] keyIds = new int[positionCount * keys.size()];
for (int i = 0; i < keyIds.length; i++) {
keyIds[i] = i % keys.size();
}
return new DictionaryBlock(positionCount * keys.size(), keyDictionaryBlock, keyIds);
}
private static Block createValueBlock(int positionCount, int mapSize)
{
BlockBuilder valueBlockBuilder = DOUBLE.createBlockBuilder(new BlockBuilderStatus(), positionCount * mapSize);
for (int i = 0; i < positionCount * mapSize; i++) {
DOUBLE.writeDouble(valueBlockBuilder, ThreadLocalRandom.current().nextDouble());
}
return valueBlockBuilder.build();
}
private static Block createSliceArrayBlock(List<String> keys)
{
// last position is reserved for null
Slice[] sliceArray = new Slice[keys.size() + 1];
for (int i = 0; i < keys.size(); i++) {
sliceArray[i] = utf8Slice(keys.get(i));
}
return new SliceArrayBlock(sliceArray.length, sliceArray);
}
}
public static void main(String[] args)
throws Throwable
{
// assure the benchmarks are valid before running
BenchmarkData data = new BenchmarkData();
data.setup();
new BenchmarkMapConcat().mapConcat(data);
Options options = new OptionsBuilder()
.verbosity(VerboseMode.NORMAL)
.warmupMode(WarmupMode.INDI)
.include(".*" + BenchmarkMapConcat.class.getSimpleName() + ".*")
.build();
new Runner(options).run();
}
}