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[flink] Introduce parallelism execution for lookup join (apache#2614)
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132 changes: 132 additions & 0 deletions
132
paimon-core/src/main/java/org/apache/paimon/io/SplitsParallelReadUtil.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,132 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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|
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| package org.apache.paimon.io; | ||
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| import org.apache.paimon.data.InternalRow; | ||
| import org.apache.paimon.data.serializer.InternalSerializers; | ||
| import org.apache.paimon.reader.RecordReader; | ||
| import org.apache.paimon.table.source.ReadBuilder; | ||
| import org.apache.paimon.table.source.Split; | ||
| import org.apache.paimon.types.RowType; | ||
| import org.apache.paimon.utils.Pair; | ||
| import org.apache.paimon.utils.ParallelExecution; | ||
| import org.apache.paimon.utils.ParallelExecution.ParallelBatch; | ||
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|
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| import javax.annotation.Nullable; | ||
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| import java.io.IOException; | ||
| import java.io.UncheckedIOException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.function.BiFunction; | ||
| import java.util.function.Function; | ||
| import java.util.function.Supplier; | ||
|
|
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| /** | ||
| * An util class to wrap {@link ParallelExecution} to parallel execution for {@link Split} reader. | ||
| */ | ||
| public class SplitsParallelReadUtil { | ||
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| public static RecordReader<InternalRow> parallelExecute( | ||
| RowType projectedType, | ||
| ReadBuilder readBuilder, | ||
| List<Split> splits, | ||
| int pageSize, | ||
| int parallelism) { | ||
| return parallelExecute( | ||
| projectedType, | ||
| readBuilder, | ||
| splits, | ||
| pageSize, | ||
| parallelism, | ||
| split -> null, | ||
| (row, unused) -> row); | ||
| } | ||
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| public static <EXTRA> RecordReader<InternalRow> parallelExecute( | ||
| RowType projectedType, | ||
| ReadBuilder readBuilder, | ||
| List<Split> splits, | ||
| int pageSize, | ||
| int parallelism, | ||
| Function<Split, EXTRA> extraFunction, | ||
| BiFunction<InternalRow, EXTRA, InternalRow> addExtraToRow) { | ||
| List<Supplier<Pair<RecordReader<InternalRow>, EXTRA>>> suppliers = new ArrayList<>(); | ||
| for (Split split : splits) { | ||
| suppliers.add( | ||
| () -> { | ||
| try { | ||
| RecordReader<InternalRow> reader = | ||
| readBuilder.newRead().createReader(split); | ||
| return Pair.of(reader, extraFunction.apply(split)); | ||
| } catch (IOException e) { | ||
| throw new UncheckedIOException(e); | ||
| } | ||
| }); | ||
| } | ||
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| ParallelExecution<InternalRow, EXTRA> execution = | ||
| new ParallelExecution<>( | ||
| InternalSerializers.create(projectedType), | ||
| pageSize, | ||
| parallelism, | ||
| suppliers); | ||
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| return new RecordReader<InternalRow>() { | ||
| @Nullable | ||
| @Override | ||
| public RecordIterator<InternalRow> readBatch() throws IOException { | ||
| ParallelBatch<InternalRow, EXTRA> batch; | ||
| try { | ||
| batch = execution.take(); | ||
| } catch (InterruptedException e) { | ||
| Thread.currentThread().interrupt(); | ||
| throw new RuntimeException(e); | ||
| } | ||
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| if (batch == null) { | ||
| return null; | ||
| } | ||
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| return new RecordIterator<InternalRow>() { | ||
| @Nullable | ||
| @Override | ||
| public InternalRow next() throws IOException { | ||
| InternalRow row = batch.next(); | ||
| if (row == null) { | ||
| return null; | ||
| } | ||
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| return addExtraToRow.apply(row, batch.extraMessage()); | ||
| } | ||
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| @Override | ||
| public void releaseBatch() { | ||
| batch.releaseBatch(); | ||
| } | ||
| }; | ||
| } | ||
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| @Override | ||
| public void close() throws IOException { | ||
| execution.close(); | ||
| } | ||
| }; | ||
| } | ||
| } |
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