pvary commented on code in PR #10179: URL: https://github.com/apache/iceberg/pull/10179#discussion_r1587945650
########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/committer/SinkCommitter.java: ########## @@ -0,0 +1,444 @@ +/* + * 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. + */ +package org.apache.iceberg.flink.sink.committer; + +import java.io.IOException; +import java.io.Serializable; +import java.util.Arrays; +import java.util.Collection; +import java.util.Comparator; +import java.util.List; +import java.util.Map; +import java.util.NavigableMap; +import java.util.SortedMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.TimeUnit; +import org.apache.flink.api.common.state.ListStateDescriptor; +import org.apache.flink.api.common.typeinfo.BasicTypeInfo; +import org.apache.flink.api.common.typeinfo.PrimitiveArrayTypeInfo; +import org.apache.flink.api.connector.sink2.Committer; +import org.apache.flink.core.io.SimpleVersionedSerialization; +import org.apache.flink.table.runtime.typeutils.SortedMapTypeInfo; +import org.apache.iceberg.AppendFiles; +import org.apache.iceberg.ManifestFile; +import org.apache.iceberg.ReplacePartitions; +import org.apache.iceberg.RowDelta; +import org.apache.iceberg.Snapshot; +import org.apache.iceberg.SnapshotUpdate; +import org.apache.iceberg.Table; +import org.apache.iceberg.flink.TableLoader; +import org.apache.iceberg.flink.sink.CommitSummary; +import org.apache.iceberg.flink.sink.DeltaManifests; +import org.apache.iceberg.flink.sink.DeltaManifestsSerializer; +import org.apache.iceberg.flink.sink.IcebergFilesCommitterMetrics; +import org.apache.iceberg.io.WriteResult; +import org.apache.iceberg.relocated.com.google.common.annotations.VisibleForTesting; +import org.apache.iceberg.relocated.com.google.common.base.MoreObjects; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.iceberg.types.Comparators; +import org.apache.iceberg.types.Types; +import org.apache.iceberg.util.PropertyUtil; +import org.apache.iceberg.util.ThreadPools; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * This class implements the Flink SinkV2 {@link Committer} interface to implement the Iceberg + * commits. The implementation builds on the following assumptions: + * + * <ul> + * <li>There is a single {@link SinkCommittable} for every checkpoint + * <li>There is no late checkpoint - if checkpoint 'x' has received in one call, then after a + * successful run only checkpoints > x will arrive + * <li>There is no other writer which would generate another commit to the same branch with the + * same jobId-operatorId-checkpointId triplet + * </ul> + * + * <p>Missing features from the Flink Sink V2 API: + * + * <ul> + * <li>No metrics access - The SinkV2 implementation will not emit committer metrics for now + * <li>Committer parallelism could not be set - There will be running instances of the Committer + * which does not receive any events + * </ul> + */ +public class SinkCommitter implements Committer<SinkCommittable>, Serializable { + private static final long serialVersionUID = 1L; + private static final Logger LOG = LoggerFactory.getLogger(SinkCommitter.class); + private static final byte[] EMPTY_MANIFEST_DATA = new byte[0]; + public static final long INITIAL_CHECKPOINT_ID = -1L; + public static final String FLINK_JOB_ID = "flink.job-id"; + public static final String OPERATOR_ID = "flink.operator-id"; + private static final String MAX_COMMITTED_CHECKPOINT_ID = "flink.max-committed-checkpoint-id"; + + @VisibleForTesting + static final String MAX_CONTINUOUS_EMPTY_COMMITS = "flink.max-continuous-empty-commits"; + + private final TableLoader tableLoader; + private final String branch; + private final Map<String, String> snapshotProperties; + private final boolean replacePartitions; + private final int workerPoolSize; + private final String prefix; + private transient IcebergFilesCommitterMetrics committerMetrics; + private transient Table table; + private transient int maxContinuousEmptyCommits; + private transient ExecutorService workerPool; + private transient IcebergManifestOutputFileFactory icebergManifestOutputFileFactory; + private transient int continuousEmptyCheckpoints = 0; + private transient boolean initialized = false; + + public SinkCommitter( + TableLoader tableLoader, + String branch, + Map<String, String> snapshotProperties, + boolean replacePartitions, + int workerPoolSize, + String prefix) { + this.tableLoader = tableLoader; + this.branch = branch; + this.snapshotProperties = snapshotProperties; + this.replacePartitions = replacePartitions; + this.workerPoolSize = workerPoolSize; + this.prefix = prefix; + } + + @Override + public void commit(Collection<CommitRequest<SinkCommittable>> commitRequests) + throws IOException, InterruptedException { + if (commitRequests.isEmpty()) { + LOG.info("Noting to commit"); + return; + } + + if (!initialized) { + if (!tableLoader.isOpen()) { + tableLoader.open(); + } Review Comment: nit:newline -- This is an automated message from the Apache Git Service. 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