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[core] Introduce cross-partition-upsert.bootstrap-parallelism
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55 changes: 55 additions & 0 deletions
55
paimon-common/src/main/java/org/apache/paimon/memory/ArraySegmentPool.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| /* | ||
| * 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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| package org.apache.paimon.memory; | ||
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| import java.util.LinkedList; | ||
| import java.util.List; | ||
| import java.util.Queue; | ||
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| /** A {@link MemorySegmentPool} for allocated segments. */ | ||
| public class ArraySegmentPool implements MemorySegmentPool { | ||
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| private final Queue<MemorySegment> segments; | ||
| private final int pageSize; | ||
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| public ArraySegmentPool(List<MemorySegment> segments) { | ||
| this.segments = new LinkedList<>(segments); | ||
| this.pageSize = segments.get(0).size(); | ||
| } | ||
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| @Override | ||
| public int pageSize() { | ||
| return pageSize; | ||
| } | ||
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| @Override | ||
| public void returnAll(List<MemorySegment> memory) { | ||
| segments.addAll(memory); | ||
| } | ||
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| @Override | ||
| public int freePages() { | ||
| return segments.size(); | ||
| } | ||
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| @Override | ||
| public MemorySegment nextSegment() { | ||
| return segments.poll(); | ||
| } | ||
| } |
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paimon-common/src/main/java/org/apache/paimon/utils/ParallelExecution.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,202 @@ | ||
| /* | ||
| * 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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| package org.apache.paimon.utils; | ||
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| import org.apache.paimon.data.RandomAccessInputView; | ||
| import org.apache.paimon.data.SimpleCollectingOutputView; | ||
| import org.apache.paimon.data.serializer.Serializer; | ||
| import org.apache.paimon.memory.ArraySegmentPool; | ||
| import org.apache.paimon.memory.MemorySegment; | ||
| import org.apache.paimon.reader.RecordReader; | ||
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| import javax.annotation.Nullable; | ||
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| import java.io.Closeable; | ||
| import java.io.EOFException; | ||
| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.concurrent.ArrayBlockingQueue; | ||
| import java.util.concurrent.BlockingQueue; | ||
| import java.util.concurrent.CountDownLatch; | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.LinkedBlockingQueue; | ||
| import java.util.concurrent.ThreadPoolExecutor; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.atomic.AtomicReference; | ||
| import java.util.function.Supplier; | ||
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| /** | ||
| * A class to help parallel execution. | ||
| * | ||
| * @param <T> Record Type. | ||
| * @param <E> Extra message of one {@link RecordReader}. | ||
| */ | ||
| public class ParallelExecution<T, E> implements Closeable { | ||
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| private final Serializer<T> serializer; | ||
| private final BlockingQueue<MemorySegment> idlePages; | ||
| private final BlockingQueue<ParallelBatch<T, E>> results; | ||
| private final ExecutorService executorService; | ||
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| private final AtomicReference<Throwable> exception; | ||
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| private final CountDownLatch latch; | ||
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| public ParallelExecution( | ||
| Serializer<T> serializer, | ||
| int pageSize, | ||
| int parallelism, | ||
| List<Supplier<Pair<RecordReader<T>, E>>> readers) { | ||
| this.serializer = serializer; | ||
| int totalPages = parallelism * 2; | ||
| this.idlePages = new ArrayBlockingQueue<>(totalPages); | ||
| for (int i = 0; i < totalPages; i++) { | ||
| idlePages.add(MemorySegment.allocateHeapMemory(pageSize)); | ||
| } | ||
| this.executorService = | ||
| new ThreadPoolExecutor( | ||
| parallelism, | ||
| parallelism, | ||
| 1, | ||
| TimeUnit.SECONDS, | ||
| new LinkedBlockingQueue<>(), | ||
| new ExecutorThreadFactory(Thread.currentThread().getName() + "-parallel")); | ||
| this.results = new LinkedBlockingQueue<>(); | ||
| this.exception = new AtomicReference<>(); | ||
| this.latch = new CountDownLatch(readers.size()); | ||
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| for (Supplier<Pair<RecordReader<T>, E>> readerSupplier : readers) { | ||
| Serializer<T> duplicate = this.serializer.duplicate(); | ||
| executorService.submit(() -> asyncRead(readerSupplier, duplicate)); | ||
| } | ||
| } | ||
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| @Nullable | ||
| public ParallelBatch<T, E> take() throws InterruptedException, IOException { | ||
| ParallelBatch<T, E> element; | ||
| do { | ||
| if (latch.getCount() == 0 && results.isEmpty()) { | ||
| return null; | ||
| } | ||
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| element = results.poll(2, TimeUnit.SECONDS); | ||
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| if (exception.get() != null) { | ||
| throw new IOException(exception.get()); | ||
| } | ||
| } while (element == null); | ||
| return element; | ||
| } | ||
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| private void asyncRead( | ||
| Supplier<Pair<RecordReader<T>, E>> readerSupplier, Serializer<T> serializer) { | ||
| Pair<RecordReader<T>, E> pair = readerSupplier.get(); | ||
| try (CloseableIterator<T> iterator = pair.getLeft().toCloseableIterator()) { | ||
| int count = 0; | ||
| SimpleCollectingOutputView outputView = null; | ||
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| while (iterator.hasNext()) { | ||
| T next = iterator.next(); | ||
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| while (true) { | ||
| if (outputView == null) { | ||
| outputView = newOutputView(); | ||
| count = 0; | ||
| } | ||
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| try { | ||
| serializer.serialize(next, outputView); | ||
| count++; | ||
| break; | ||
| } catch (EOFException e) { | ||
| sendToResults(outputView, count, pair.getRight()); | ||
| outputView = null; | ||
| } | ||
| } | ||
| } | ||
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| if (outputView != null) { | ||
| sendToResults(outputView, count, pair.getRight()); | ||
| } | ||
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| latch.countDown(); | ||
| } catch (Throwable e) { | ||
| this.exception.set(e); | ||
| } | ||
| } | ||
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| private SimpleCollectingOutputView newOutputView() throws InterruptedException { | ||
| MemorySegment page = idlePages.take(); | ||
| return new SimpleCollectingOutputView( | ||
| new ArraySegmentPool(Collections.singletonList(page)), page.size()); | ||
| } | ||
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| private void sendToResults(SimpleCollectingOutputView outputView, int count, E extraMessage) { | ||
| results.add(iterator(outputView.getCurrentSegment(), count, extraMessage)); | ||
| } | ||
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| @Override | ||
| public void close() throws IOException { | ||
| this.executorService.shutdownNow(); | ||
| } | ||
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| private ParallelBatch<T, E> iterator(MemorySegment page, int numRecords, E extraMessage) { | ||
| RandomAccessInputView inputView = | ||
| new RandomAccessInputView( | ||
| new ArrayList<>(Collections.singletonList(page)), page.size()); | ||
| return new ParallelBatch<T, E>() { | ||
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| int numReturn = 0; | ||
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| @Nullable | ||
| @Override | ||
| public T next() throws IOException { | ||
| if (numReturn >= numRecords) { | ||
| return null; | ||
| } | ||
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| numReturn++; | ||
| return serializer.deserialize(inputView); | ||
| } | ||
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| @Override | ||
| public void releaseBatch() { | ||
| idlePages.add(page); | ||
| } | ||
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| @Override | ||
| public E extraMesage() { | ||
| return extraMessage; | ||
| } | ||
| }; | ||
| } | ||
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| /** A batch provides next and extra message. */ | ||
| public interface ParallelBatch<T, E> { | ||
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| @Nullable | ||
| T next() throws IOException; | ||
|
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| void releaseBatch(); | ||
|
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| E extraMesage(); | ||
| } | ||
| } |
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