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[flink] add coordinate and worker operator for small changelog files …
…compaction
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177 changes: 177 additions & 0 deletions
177
...in/java/org/apache/paimon/flink/compact/changelog/ChangelogCompactCoordinateOperator.java
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| /* | ||
| * 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.flink.compact.changelog; | ||
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| import org.apache.paimon.append.UnawareAppendTableCompactionCoordinator; | ||
| import org.apache.paimon.data.BinaryRow; | ||
| import org.apache.paimon.flink.sink.Committable; | ||
| import org.apache.paimon.io.CompactIncrement; | ||
| import org.apache.paimon.io.DataFileMeta; | ||
| import org.apache.paimon.io.DataIncrement; | ||
| import org.apache.paimon.table.FileStoreTable; | ||
| import org.apache.paimon.table.sink.CommitMessageImpl; | ||
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|
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| import org.apache.flink.streaming.api.operators.AbstractStreamOperator; | ||
| import org.apache.flink.streaming.api.operators.BoundedOneInput; | ||
| import org.apache.flink.streaming.api.operators.OneInputStreamOperator; | ||
| import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; | ||
| import org.apache.flink.types.Either; | ||
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| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| /** | ||
| * Coordinator operator for compacting changelog files. | ||
| * | ||
| * <p>{@link UnawareAppendTableCompactionCoordinator} calculates the file size of changelog files | ||
| * contained in all buckets within each partition from {@link Committable} message emitted from | ||
| * writer operator. And emit {@link ChangelogCompactTask} to {@link ChangelogCompactWorkerOperator}. | ||
| */ | ||
| public class ChangelogCompactCoordinateOperator | ||
| extends AbstractStreamOperator<Either<Committable, ChangelogCompactTask>> | ||
| implements OneInputStreamOperator<Committable, Either<Committable, ChangelogCompactTask>>, | ||
| BoundedOneInput { | ||
| private final FileStoreTable table; | ||
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| private transient long checkpointId; | ||
| private transient Map<BinaryRow, PartitionChangelog> partitionChangelogs; | ||
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| public ChangelogCompactCoordinateOperator(FileStoreTable table) { | ||
| this.table = table; | ||
| } | ||
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| @Override | ||
| public void open() throws Exception { | ||
| super.open(); | ||
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| checkpointId = Long.MIN_VALUE; | ||
| partitionChangelogs = new HashMap<>(); | ||
| } | ||
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| public void processElement(StreamRecord<Committable> record) { | ||
| Committable committable = record.getValue(); | ||
| checkpointId = Math.max(checkpointId, committable.checkpointId()); | ||
| if (committable.kind() != Committable.Kind.FILE) { | ||
| output.collect(new StreamRecord<>(Either.Left(record.getValue()))); | ||
| return; | ||
| } | ||
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| CommitMessageImpl message = (CommitMessageImpl) committable.wrappedCommittable(); | ||
| if (message.newFilesIncrement().changelogFiles().isEmpty() | ||
| && message.compactIncrement().changelogFiles().isEmpty()) { | ||
| output.collect(new StreamRecord<>(Either.Left(record.getValue()))); | ||
| return; | ||
| } | ||
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| BinaryRow partition = message.partition(); | ||
| Integer bucket = message.bucket(); | ||
| for (DataFileMeta meta : message.newFilesIncrement().changelogFiles()) { | ||
| partitionChangelogs | ||
| .computeIfAbsent(partition, k -> new PartitionChangelog()) | ||
| .addNewChangelogFile(bucket, meta); | ||
| PartitionChangelog partitionChangelog = partitionChangelogs.get(partition); | ||
| if (partitionChangelog.totalFileSize >= table.coreOptions().targetFileSize(false)) { | ||
| emitPartitionChanglogCompactTask(partition); | ||
| } | ||
| } | ||
| for (DataFileMeta meta : message.compactIncrement().changelogFiles()) { | ||
| partitionChangelogs | ||
| .computeIfAbsent(partition, k -> new PartitionChangelog()) | ||
| .addCompactChangelogFile(bucket, meta); | ||
| PartitionChangelog partitionChangelog = partitionChangelogs.get(partition); | ||
| if (partitionChangelog.totalFileSize >= table.coreOptions().targetFileSize(false)) { | ||
| emitPartitionChanglogCompactTask(partition); | ||
| } | ||
| } | ||
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| CommitMessageImpl newMessage = | ||
| new CommitMessageImpl( | ||
| message.partition(), | ||
| message.bucket(), | ||
| new DataIncrement( | ||
| message.newFilesIncrement().newFiles(), | ||
| message.newFilesIncrement().deletedFiles(), | ||
| Collections.emptyList()), | ||
| new CompactIncrement( | ||
| message.compactIncrement().compactBefore(), | ||
| message.compactIncrement().compactAfter(), | ||
| Collections.emptyList()), | ||
| message.indexIncrement()); | ||
| Committable newCommittable = | ||
| new Committable(committable.checkpointId(), Committable.Kind.FILE, newMessage); | ||
| output.collect(new StreamRecord<>(Either.Left(newCommittable))); | ||
| } | ||
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| public void prepareSnapshotPreBarrier(long checkpointId) { | ||
| emitAllPartitionsChanglogCompactTask(); | ||
| } | ||
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| public void endInput() { | ||
| emitAllPartitionsChanglogCompactTask(); | ||
| } | ||
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| private void emitPartitionChanglogCompactTask(BinaryRow partition) { | ||
| PartitionChangelog partitionChangelog = partitionChangelogs.get(partition); | ||
| output.collect( | ||
| new StreamRecord<>( | ||
| Either.Right( | ||
| new ChangelogCompactTask( | ||
| checkpointId, | ||
| partition, | ||
| partitionChangelog.newFileChangelogFiles, | ||
| partitionChangelog.compactChangelogFiles)))); | ||
| partitionChangelogs.remove(partition); | ||
| } | ||
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| private void emitAllPartitionsChanglogCompactTask() { | ||
| List<BinaryRow> partitions = new ArrayList<>(partitionChangelogs.keySet()); | ||
| for (BinaryRow partition : partitions) { | ||
| emitPartitionChanglogCompactTask(partition); | ||
| } | ||
| } | ||
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| private static class PartitionChangelog { | ||
| private long totalFileSize; | ||
| private final Map<Integer, List<DataFileMeta>> newFileChangelogFiles; | ||
| private final Map<Integer, List<DataFileMeta>> compactChangelogFiles; | ||
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| public long totalFileSize() { | ||
| return totalFileSize; | ||
| } | ||
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| public PartitionChangelog() { | ||
| totalFileSize = 0; | ||
| newFileChangelogFiles = new HashMap<>(); | ||
| compactChangelogFiles = new HashMap<>(); | ||
| } | ||
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| public void addNewChangelogFile(Integer bucket, DataFileMeta file) { | ||
| totalFileSize += file.fileSize(); | ||
| newFileChangelogFiles.computeIfAbsent(bucket, k -> new ArrayList<>()).add(file); | ||
| } | ||
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| public void addCompactChangelogFile(Integer bucket, DataFileMeta file) { | ||
| totalFileSize += file.fileSize(); | ||
| compactChangelogFiles.computeIfAbsent(bucket, k -> new ArrayList<>()).add(file); | ||
| } | ||
| } | ||
| } |
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