stevenzwu commented on code in PR #10179: URL: https://github.com/apache/iceberg/pull/10179#discussion_r1690515381
########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergSinkWriter.java: ########## @@ -0,0 +1,116 @@ +/* + * 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; + +import java.io.IOException; +import java.util.Collection; +import java.util.concurrent.TimeUnit; +import org.apache.flink.api.connector.sink2.CommittingSinkWriter; +import org.apache.flink.api.connector.sink2.SinkWriter; +import org.apache.flink.table.data.RowData; +import org.apache.iceberg.Table; +import org.apache.iceberg.io.TaskWriter; +import org.apache.iceberg.io.WriteResult; +import org.apache.iceberg.relocated.com.google.common.base.MoreObjects; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.util.SerializableSupplier; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Iceberg writer implementation for the {@link SinkWriter} interface. Used by the {@link + * org.apache.iceberg.flink.sink.IcebergSink} (SinkV2). Writes out the data to the final place, and + * emits a single {@link WriteResult} at every checkpoint for every data/delete file created by this + * writer. + */ +class IcebergSinkWriter implements CommittingSinkWriter<RowData, WriteResult> { + private static final Logger LOG = LoggerFactory.getLogger(IcebergSinkWriter.class); + + private final String fullTableName; + private final TaskWriterFactory<RowData> taskWriterFactory; + private final IcebergStreamWriterMetrics metrics; + private TaskWriter<RowData> writer; + private final int subTaskId; + private final int attemptId; + + IcebergSinkWriter( + SerializableSupplier<Table> tableSupplier, + TaskWriterFactory<RowData> taskWriterFactory, + IcebergStreamWriterMetrics metrics, + int subTaskId, + int attemptId) { + this.fullTableName = tableSupplier.get().name(); + this.taskWriterFactory = taskWriterFactory; + // Initialize the task writer factory. + taskWriterFactory.initialize(subTaskId, attemptId); + // Initialize the task writer. + this.writer = taskWriterFactory.create(); + this.metrics = metrics; + this.subTaskId = subTaskId; + this.attemptId = attemptId; + + LOG.debug( + "StreamWriter created for table {} subtask {} parallelSubtasks {}", Review Comment: `parallelSubtasks` is not correct here. ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/committer/IcebergCommitter.java: ########## @@ -0,0 +1,350 @@ +/* + * 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.List; +import java.util.Map; +import java.util.NavigableMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.TimeUnit; +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.connector.sink2.Committer; +import org.apache.flink.core.io.SimpleVersionedSerialization; +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.FlinkManifestUtil; +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.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.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 IcebergCommittable} 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> + */ +@Internal +public class IcebergCommitter implements Committer<IcebergCommittable>, Serializable { + private static final long serialVersionUID = 1L; + private static final String MAX_COMMITTED_CHECKPOINT_ID = "flink.max-committed-checkpoint-id"; + private static final Logger LOG = LoggerFactory.getLogger(IcebergCommitter.class); + private static final byte[] EMPTY_MANIFEST_DATA = new byte[0]; + public static final WriteResult EMPTY_WRITE_RESULT = + WriteResult.builder() + .addDataFiles(Lists.newArrayList()) + .addDeleteFiles(Lists.newArrayList()) + .build(); + + private static final long INITIAL_CHECKPOINT_ID = -1L; + + @VisibleForTesting + static final String MAX_CONTINUOUS_EMPTY_COMMITS = "flink.max-continuous-empty-commits"; + + public static final String FLINK_JOB_ID = "flink.job-id"; + public static final String OPERATOR_ID = "flink.operator-id"; + private final String branch; + private final Map<String, String> snapshotProperties; + private final boolean replacePartitions; + private transient IcebergFilesCommitterMetrics committerMetrics; + private transient Table table; + private transient int maxContinuousEmptyCommits; + private transient ExecutorService workerPool; + private transient int continuousEmptyCheckpoints = 0; + + public IcebergCommitter( + TableLoader tableLoader, + String branch, + Map<String, String> snapshotProperties, + boolean replacePartitions, + int workerPoolSize, + String sinkId, + IcebergFilesCommitterMetrics committerMetrics) { + this.branch = branch; + this.snapshotProperties = snapshotProperties; + this.replacePartitions = replacePartitions; + this.committerMetrics = committerMetrics; + + if (!tableLoader.isOpen()) { + tableLoader.open(); + } + + this.table = tableLoader.loadTable(); + this.maxContinuousEmptyCommits = + PropertyUtil.propertyAsInt(table.properties(), MAX_CONTINUOUS_EMPTY_COMMITS, 10); + Preconditions.checkArgument( + maxContinuousEmptyCommits > 0, MAX_CONTINUOUS_EMPTY_COMMITS + " must be positive"); + this.workerPool = + ThreadPools.newWorkerPool("iceberg-committer-pool-" + table + "-" + sinkId, workerPoolSize); + this.continuousEmptyCheckpoints = 0; + } + + @Override + public void commit(Collection<CommitRequest<IcebergCommittable>> commitRequests) + throws IOException, InterruptedException { + if (commitRequests.isEmpty()) { + return; + } + + NavigableMap<Long, CommitRequest<IcebergCommittable>> commitRequestMap = Maps.newTreeMap(); + + for (CommitRequest<IcebergCommittable> request : commitRequests) { + commitRequestMap.put(request.getCommittable().checkpointId(), request); + } + + IcebergCommittable last = commitRequestMap.lastEntry().getValue().getCommittable(); + Review Comment: nit: unnecessary empty line. applicable to line 140 and line 146 below too ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/committer/IcebergCommitter.java: ########## @@ -0,0 +1,350 @@ +/* + * 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.List; +import java.util.Map; +import java.util.NavigableMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.TimeUnit; +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.connector.sink2.Committer; +import org.apache.flink.core.io.SimpleVersionedSerialization; +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.FlinkManifestUtil; +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.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.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 IcebergCommittable} 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> + */ +@Internal +public class IcebergCommitter implements Committer<IcebergCommittable>, Serializable { + private static final long serialVersionUID = 1L; + private static final String MAX_COMMITTED_CHECKPOINT_ID = "flink.max-committed-checkpoint-id"; + private static final Logger LOG = LoggerFactory.getLogger(IcebergCommitter.class); + private static final byte[] EMPTY_MANIFEST_DATA = new byte[0]; + public static final WriteResult EMPTY_WRITE_RESULT = + WriteResult.builder() + .addDataFiles(Lists.newArrayList()) + .addDeleteFiles(Lists.newArrayList()) + .build(); + + private static final long INITIAL_CHECKPOINT_ID = -1L; + + @VisibleForTesting + static final String MAX_CONTINUOUS_EMPTY_COMMITS = "flink.max-continuous-empty-commits"; + + public static final String FLINK_JOB_ID = "flink.job-id"; + public static final String OPERATOR_ID = "flink.operator-id"; + private final String branch; + private final Map<String, String> snapshotProperties; + private final boolean replacePartitions; + private transient IcebergFilesCommitterMetrics committerMetrics; + private transient Table table; + private transient int maxContinuousEmptyCommits; + private transient ExecutorService workerPool; + private transient int continuousEmptyCheckpoints = 0; + + public IcebergCommitter( + TableLoader tableLoader, + String branch, + Map<String, String> snapshotProperties, + boolean replacePartitions, + int workerPoolSize, + String sinkId, + IcebergFilesCommitterMetrics committerMetrics) { + this.branch = branch; + this.snapshotProperties = snapshotProperties; + this.replacePartitions = replacePartitions; + this.committerMetrics = committerMetrics; + + if (!tableLoader.isOpen()) { + tableLoader.open(); + } + + this.table = tableLoader.loadTable(); + this.maxContinuousEmptyCommits = + PropertyUtil.propertyAsInt(table.properties(), MAX_CONTINUOUS_EMPTY_COMMITS, 10); + Preconditions.checkArgument( + maxContinuousEmptyCommits > 0, MAX_CONTINUOUS_EMPTY_COMMITS + " must be positive"); + this.workerPool = + ThreadPools.newWorkerPool("iceberg-committer-pool-" + table + "-" + sinkId, workerPoolSize); + this.continuousEmptyCheckpoints = 0; + } + + @Override + public void commit(Collection<CommitRequest<IcebergCommittable>> commitRequests) + throws IOException, InterruptedException { + if (commitRequests.isEmpty()) { + return; + } + + NavigableMap<Long, CommitRequest<IcebergCommittable>> commitRequestMap = Maps.newTreeMap(); + Review Comment: nit: unnecessary empty line. ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/committer/IcebergWriteAggregator.java: ########## @@ -0,0 +1,130 @@ +/* + * 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.util.Collection; +import org.apache.flink.annotation.Internal; +import org.apache.flink.core.io.SimpleVersionedSerialization; +import org.apache.flink.streaming.api.connector.sink2.CommittableMessage; +import org.apache.flink.streaming.api.connector.sink2.CommittableSummary; +import org.apache.flink.streaming.api.connector.sink2.CommittableWithLineage; +import org.apache.flink.streaming.api.operators.AbstractStreamOperator; +import org.apache.flink.streaming.api.operators.OneInputStreamOperator; +import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; +import org.apache.iceberg.Table; +import org.apache.iceberg.flink.TableLoader; +import org.apache.iceberg.flink.sink.DeltaManifests; +import org.apache.iceberg.flink.sink.DeltaManifestsSerializer; +import org.apache.iceberg.flink.sink.FlinkManifestUtil; +import org.apache.iceberg.flink.sink.ManifestOutputFileFactory; +import org.apache.iceberg.io.WriteResult; +import org.apache.iceberg.relocated.com.google.common.collect.Sets; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Operator which aggregates the individual {@link WriteResult} objects) to a single {@link + * IcebergCommittable} per checkpoint (storing the serialized {@link DeltaManifests}, jobId, + * operatorId, checkpointId) + */ +@Internal +public class IcebergWriteAggregator + extends AbstractStreamOperator<CommittableMessage<IcebergCommittable>> + implements OneInputStreamOperator< + CommittableMessage<WriteResult>, CommittableMessage<IcebergCommittable>> { + private static final Logger LOG = LoggerFactory.getLogger(IcebergWriteAggregator.class); + private static final byte[] EMPTY_MANIFEST_DATA = new byte[0]; + private final Collection<WriteResult> results; + private transient ManifestOutputFileFactory icebergManifestOutputFileFactory; + private transient Table table; + private final TableLoader tableLoader; + private static final int FORMAT_V2 = 2; + private static final Long DUMMY_SNAPSHOT_ID = 0L; + + public IcebergWriteAggregator(TableLoader tableLoader) { + this.results = Sets.newHashSet(); + this.tableLoader = tableLoader; + } + + @Override + public void open() throws Exception { + if (!tableLoader.isOpen()) { + tableLoader.open(); + } + String flinkJobId = getContainingTask().getEnvironment().getJobID().toString(); + String operatorId = getOperatorID().toString(); + this.table = tableLoader.loadTable(); + + this.icebergManifestOutputFileFactory = + FlinkManifestUtil.createOutputFileFactory( + () -> table, table.properties(), flinkJobId, operatorId); + } + + @Override + public void finish() throws IOException { + prepareSnapshotPreBarrier(Long.MAX_VALUE); + } + + @Override + public void prepareSnapshotPreBarrier(long checkpointId) throws IOException { + IcebergCommittable committable = + new IcebergCommittable( + writeToManifest(results, checkpointId), + getContainingTask().getEnvironment().getJobID().toString(), + getRuntimeContext().getOperatorUniqueID(), + checkpointId); + CommittableMessage<IcebergCommittable> message = + new CommittableWithLineage<>(committable, checkpointId, 0); + CommittableMessage<IcebergCommittable> summary = + new CommittableSummary<>(0, 1, checkpointId, 1, 1, 0); + output.collect(new StreamRecord<>(summary)); + output.collect(new StreamRecord<>(message)); + LOG.info("Aggregated commit message emitted {}", message); Review Comment: `message` doesn't implement `toString` nit: `Emitted commit message to downstream committer operator` ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/committer/IcebergCommitter.java: ########## @@ -0,0 +1,350 @@ +/* + * 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.List; +import java.util.Map; +import java.util.NavigableMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.TimeUnit; +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.connector.sink2.Committer; +import org.apache.flink.core.io.SimpleVersionedSerialization; +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.FlinkManifestUtil; +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.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.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 IcebergCommittable} 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> + */ +@Internal +public class IcebergCommitter implements Committer<IcebergCommittable>, Serializable { + private static final long serialVersionUID = 1L; + private static final String MAX_COMMITTED_CHECKPOINT_ID = "flink.max-committed-checkpoint-id"; + private static final Logger LOG = LoggerFactory.getLogger(IcebergCommitter.class); + private static final byte[] EMPTY_MANIFEST_DATA = new byte[0]; + public static final WriteResult EMPTY_WRITE_RESULT = + WriteResult.builder() + .addDataFiles(Lists.newArrayList()) + .addDeleteFiles(Lists.newArrayList()) + .build(); + + private static final long INITIAL_CHECKPOINT_ID = -1L; + + @VisibleForTesting + static final String MAX_CONTINUOUS_EMPTY_COMMITS = "flink.max-continuous-empty-commits"; + + public static final String FLINK_JOB_ID = "flink.job-id"; + public static final String OPERATOR_ID = "flink.operator-id"; + private final String branch; + private final Map<String, String> snapshotProperties; + private final boolean replacePartitions; + private transient IcebergFilesCommitterMetrics committerMetrics; + private transient Table table; + private transient int maxContinuousEmptyCommits; + private transient ExecutorService workerPool; + private transient int continuousEmptyCheckpoints = 0; + + public IcebergCommitter( + TableLoader tableLoader, + String branch, + Map<String, String> snapshotProperties, + boolean replacePartitions, + int workerPoolSize, + String sinkId, + IcebergFilesCommitterMetrics committerMetrics) { + this.branch = branch; + this.snapshotProperties = snapshotProperties; + this.replacePartitions = replacePartitions; + this.committerMetrics = committerMetrics; + + if (!tableLoader.isOpen()) { + tableLoader.open(); + } + + this.table = tableLoader.loadTable(); + this.maxContinuousEmptyCommits = + PropertyUtil.propertyAsInt(table.properties(), MAX_CONTINUOUS_EMPTY_COMMITS, 10); + Preconditions.checkArgument( + maxContinuousEmptyCommits > 0, MAX_CONTINUOUS_EMPTY_COMMITS + " must be positive"); + this.workerPool = + ThreadPools.newWorkerPool("iceberg-committer-pool-" + table + "-" + sinkId, workerPoolSize); + this.continuousEmptyCheckpoints = 0; + } + + @Override + public void commit(Collection<CommitRequest<IcebergCommittable>> commitRequests) + throws IOException, InterruptedException { + if (commitRequests.isEmpty()) { + return; + } + + NavigableMap<Long, CommitRequest<IcebergCommittable>> commitRequestMap = Maps.newTreeMap(); + + for (CommitRequest<IcebergCommittable> request : commitRequests) { + commitRequestMap.put(request.getCommittable().checkpointId(), request); + } + + IcebergCommittable last = commitRequestMap.lastEntry().getValue().getCommittable(); + + long maxCommittedCheckpointId = + getMaxCommittedCheckpointId(table, last.jobId(), last.operatorId(), branch); + + // Mark the already committed FilesCommittable(s) as finished + commitRequestMap + .headMap(maxCommittedCheckpointId, true) + .values() + .forEach(CommitRequest::signalAlreadyCommitted); + + NavigableMap<Long, CommitRequest<IcebergCommittable>> uncommitted = + commitRequestMap.tailMap(maxCommittedCheckpointId, false); + if (!uncommitted.isEmpty()) { + commitPendingRequests(uncommitted, last.jobId(), last.operatorId()); + } + } + + public static long getMaxCommittedCheckpointId( + Table table, String flinkJobId, String operatorId, String branch) { + Snapshot snapshot = table.snapshot(branch); + long lastCommittedCheckpointId = INITIAL_CHECKPOINT_ID; + + while (snapshot != null) { + Map<String, String> summary = snapshot.summary(); + String snapshotFlinkJobId = summary.get(FLINK_JOB_ID); + String snapshotOperatorId = summary.get(OPERATOR_ID); + if (flinkJobId.equals(snapshotFlinkJobId) + && (snapshotOperatorId == null || snapshotOperatorId.equals(operatorId))) { + String value = summary.get(MAX_COMMITTED_CHECKPOINT_ID); + if (value != null) { + lastCommittedCheckpointId = Long.parseLong(value); + break; + } + } + Long parentSnapshotId = snapshot.parentId(); + snapshot = parentSnapshotId != null ? table.snapshot(parentSnapshotId) : null; + } + + return lastCommittedCheckpointId; + } + + /** + * Commits the data to the Iceberg table by reading the file data from the {@link DeltaManifests} + * ordered by the checkpointId, and writing the new snapshot to the Iceberg table. The {@link + * org.apache.iceberg.SnapshotSummary} will contain the jobId, snapshotId, checkpointId so in case + * of job restart we can identify which changes are committed, and which are still waiting for the + * commit. + * + * @param commitRequestMap The checkpointId to {@link CommitRequest} map of the changes to commit + * @param newFlinkJobId The jobId to store in the {@link org.apache.iceberg.SnapshotSummary} + * @param operatorId The operatorId to store in the {@link org.apache.iceberg.SnapshotSummary} + * @throws IOException On commit failure + */ + private void commitPendingRequests( + NavigableMap<Long, CommitRequest<IcebergCommittable>> commitRequestMap, + String newFlinkJobId, + String operatorId) + throws IOException { + long checkpointId = commitRequestMap.lastKey(); + List<ManifestFile> manifests = Lists.newArrayList(); + NavigableMap<Long, WriteResult> pendingResults = Maps.newTreeMap(); + for (Map.Entry<Long, CommitRequest<IcebergCommittable>> e : commitRequestMap.entrySet()) { + if (Arrays.equals(EMPTY_MANIFEST_DATA, e.getValue().getCommittable().manifest())) { + pendingResults.put(e.getKey(), EMPTY_WRITE_RESULT); + } else { + DeltaManifests deltaManifests = + SimpleVersionedSerialization.readVersionAndDeSerialize( + DeltaManifestsSerializer.INSTANCE, e.getValue().getCommittable().manifest()); + pendingResults.put( + e.getKey(), + FlinkManifestUtil.readCompletedFiles(deltaManifests, table.io(), table.specs())); + manifests.addAll(deltaManifests.manifests()); + } + } + + CommitSummary summary = new CommitSummary(pendingResults); + commitPendingResult(pendingResults, summary, newFlinkJobId, operatorId); + if (committerMetrics != null) { + committerMetrics.updateCommitSummary(summary); + } + + FlinkManifestUtil.deleteCommittedManifests(table, manifests, newFlinkJobId, checkpointId); + } + + private void commitPendingResult( + NavigableMap<Long, WriteResult> pendingResults, + CommitSummary summary, + String newFlinkJobId, + String operatorId) { + long totalFiles = summary.dataFilesCount() + summary.deleteFilesCount(); + continuousEmptyCheckpoints = totalFiles == 0 ? continuousEmptyCheckpoints + 1 : 0; + if (totalFiles != 0 || continuousEmptyCheckpoints % maxContinuousEmptyCommits == 0) { + if (replacePartitions) { + replacePartitions(pendingResults, summary, newFlinkJobId, operatorId); + } else { + commitDeltaTxn(pendingResults, summary, newFlinkJobId, operatorId); + } + continuousEmptyCheckpoints = 0; + } else { + long checkpointId = pendingResults.lastKey(); + LOG.info("Skip commit for checkpoint {} due to no data files or delete files.", checkpointId); + } + } + + private void replacePartitions( + NavigableMap<Long, WriteResult> pendingResults, + CommitSummary summary, + String newFlinkJobId, + String operatorId) { + long checkpointId = pendingResults.lastKey(); + Preconditions.checkState( + summary.deleteFilesCount() == 0, "Cannot overwrite partitions with delete files."); + // Commit the overwrite transaction. + ReplacePartitions dynamicOverwrite = table.newReplacePartitions().scanManifestsWith(workerPool); + for (WriteResult result : pendingResults.values()) { + Preconditions.checkState( + result.referencedDataFiles().length == 0, "Should have no referenced data files."); + Arrays.stream(result.dataFiles()).forEach(dynamicOverwrite::addFile); + } + + commitOperation( + dynamicOverwrite, + summary, + "dynamic partition overwrite", + newFlinkJobId, + operatorId, + checkpointId); + } + + private void commitDeltaTxn( + NavigableMap<Long, WriteResult> pendingResults, + CommitSummary summary, + String newFlinkJobId, + String operatorId) { + long checkpointId = pendingResults.lastKey(); + if (summary.deleteFilesCount() == 0) { + // To be compatible with iceberg format V1. + AppendFiles appendFiles = table.newAppend().scanManifestsWith(workerPool); + for (WriteResult result : pendingResults.values()) { + Preconditions.checkState( + result.referencedDataFiles().length == 0, + "Should have no referenced data files for append."); + Arrays.stream(result.dataFiles()).forEach(appendFiles::appendFile); + } + // fail all commits as really its only one + commitOperation(appendFiles, summary, "append", newFlinkJobId, operatorId, checkpointId); + } else { + // To be compatible with iceberg format V2. + for (Map.Entry<Long, WriteResult> e : pendingResults.entrySet()) { + // We don't commit the merged result into a single transaction because for the sequential + // transaction txn1 and txn2, the equality-delete files of txn2 are required to be applied + // to data files from txn1. Committing the merged one will lead to the incorrect delete + // semantic. + WriteResult result = e.getValue(); + + // Row delta validations are not needed for streaming changes that write equality deletes. + // Equality deletes are applied to data in all previous sequence numbers, so retries may + // push deletes further in the future, but do not affect correctness. Position deletes + // committed to the table in this path are used only to delete rows from data files that are + // being added in this commit. There is no way for data files added along with the delete + // files to be concurrently removed, so there is no need to validate the files referenced by + // the position delete files that are being committed. + RowDelta rowDelta = table.newRowDelta().scanManifestsWith(workerPool); + + Arrays.stream(result.dataFiles()).forEach(rowDelta::addRows); + Arrays.stream(result.deleteFiles()).forEach(rowDelta::addDeletes); + commitOperation(rowDelta, summary, "rowDelta", newFlinkJobId, operatorId, e.getKey()); + } + } + } + + private void commitOperation( + SnapshotUpdate<?> operation, + CommitSummary summary, + String description, + String newFlinkJobId, + String operatorId, + long checkpointId) { + + LOG.info( + "Committing {} for checkpoint {} to table {} branch {} with summary: {}", + description, + checkpointId, + table.name(), + branch, + summary); + snapshotProperties.forEach(operation::set); + // custom snapshot metadata properties will be overridden if they conflict with internal ones + // used by the sink. + operation.set(MAX_COMMITTED_CHECKPOINT_ID, Long.toString(checkpointId)); + operation.set(FLINK_JOB_ID, newFlinkJobId); + operation.set(OPERATOR_ID, operatorId); + operation.toBranch(branch); + + long startNano = System.nanoTime(); + operation.commit(); // abort is automatically called if this fails. + long durationMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNano); + LOG.info( + "Committed {} to table: {}, branch: {}, checkpointId {} in {} ms", + description, + table.name(), + branch, + checkpointId, + durationMs); + if (committerMetrics != null) { + committerMetrics.commitDuration(durationMs); + } + } + + @Override + public void close() { + // Nothing to do Review Comment: tableLoader is not closed after usage. we can either close it here or right after the usage. also noticed that table was reloaded after each commit in PR #8555 in `IcebergFilesCommitter`. Don't know if that is really needed. @bryanck any comment? ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/committer/IcebergWriteAggregator.java: ########## @@ -0,0 +1,130 @@ +/* + * 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.util.Collection; +import org.apache.flink.annotation.Internal; +import org.apache.flink.core.io.SimpleVersionedSerialization; +import org.apache.flink.streaming.api.connector.sink2.CommittableMessage; +import org.apache.flink.streaming.api.connector.sink2.CommittableSummary; +import org.apache.flink.streaming.api.connector.sink2.CommittableWithLineage; +import org.apache.flink.streaming.api.operators.AbstractStreamOperator; +import org.apache.flink.streaming.api.operators.OneInputStreamOperator; +import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; +import org.apache.iceberg.Table; +import org.apache.iceberg.flink.TableLoader; +import org.apache.iceberg.flink.sink.DeltaManifests; +import org.apache.iceberg.flink.sink.DeltaManifestsSerializer; +import org.apache.iceberg.flink.sink.FlinkManifestUtil; +import org.apache.iceberg.flink.sink.ManifestOutputFileFactory; +import org.apache.iceberg.io.WriteResult; +import org.apache.iceberg.relocated.com.google.common.collect.Sets; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Operator which aggregates the individual {@link WriteResult} objects) to a single {@link + * IcebergCommittable} per checkpoint (storing the serialized {@link DeltaManifests}, jobId, + * operatorId, checkpointId) + */ +@Internal +public class IcebergWriteAggregator + extends AbstractStreamOperator<CommittableMessage<IcebergCommittable>> + implements OneInputStreamOperator< + CommittableMessage<WriteResult>, CommittableMessage<IcebergCommittable>> { + private static final Logger LOG = LoggerFactory.getLogger(IcebergWriteAggregator.class); + private static final byte[] EMPTY_MANIFEST_DATA = new byte[0]; + private final Collection<WriteResult> results; + private transient ManifestOutputFileFactory icebergManifestOutputFileFactory; + private transient Table table; + private final TableLoader tableLoader; + private static final int FORMAT_V2 = 2; + private static final Long DUMMY_SNAPSHOT_ID = 0L; + + public IcebergWriteAggregator(TableLoader tableLoader) { + this.results = Sets.newHashSet(); + this.tableLoader = tableLoader; + } + + @Override + public void open() throws Exception { + if (!tableLoader.isOpen()) { + tableLoader.open(); + } + String flinkJobId = getContainingTask().getEnvironment().getJobID().toString(); + String operatorId = getOperatorID().toString(); + this.table = tableLoader.loadTable(); + + this.icebergManifestOutputFileFactory = + FlinkManifestUtil.createOutputFileFactory( + () -> table, table.properties(), flinkJobId, operatorId); + } + + @Override + public void finish() throws IOException { + prepareSnapshotPreBarrier(Long.MAX_VALUE); + } + + @Override + public void prepareSnapshotPreBarrier(long checkpointId) throws IOException { + IcebergCommittable committable = + new IcebergCommittable( + writeToManifest(results, checkpointId), + getContainingTask().getEnvironment().getJobID().toString(), + getRuntimeContext().getOperatorUniqueID(), + checkpointId); + CommittableMessage<IcebergCommittable> message = Review Comment: nit: move this after line 97 (closer to where it is used) ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergSinkWriter.java: ########## @@ -0,0 +1,116 @@ +/* + * 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; + +import java.io.IOException; +import java.util.Collection; +import java.util.concurrent.TimeUnit; +import org.apache.flink.api.connector.sink2.CommittingSinkWriter; +import org.apache.flink.api.connector.sink2.SinkWriter; +import org.apache.flink.table.data.RowData; +import org.apache.iceberg.Table; +import org.apache.iceberg.io.TaskWriter; +import org.apache.iceberg.io.WriteResult; +import org.apache.iceberg.relocated.com.google.common.base.MoreObjects; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.util.SerializableSupplier; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Iceberg writer implementation for the {@link SinkWriter} interface. Used by the {@link + * org.apache.iceberg.flink.sink.IcebergSink} (SinkV2). Writes out the data to the final place, and + * emits a single {@link WriteResult} at every checkpoint for every data/delete file created by this + * writer. + */ +class IcebergSinkWriter implements CommittingSinkWriter<RowData, WriteResult> { + private static final Logger LOG = LoggerFactory.getLogger(IcebergSinkWriter.class); + + private final String fullTableName; + private final TaskWriterFactory<RowData> taskWriterFactory; + private final IcebergStreamWriterMetrics metrics; + private TaskWriter<RowData> writer; + private final int subTaskId; + private final int attemptId; + + IcebergSinkWriter( + SerializableSupplier<Table> tableSupplier, + TaskWriterFactory<RowData> taskWriterFactory, + IcebergStreamWriterMetrics metrics, + int subTaskId, + int attemptId) { + this.fullTableName = tableSupplier.get().name(); Review Comment: it seems that `tableSupplier` is only used to get full table name. since the sink object already loaded the table, why don't we pass the full table name string directly? ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/ManifestOutputFileFactory.java: ########## @@ -41,6 +42,19 @@ class ManifestOutputFileFactory { private final long attemptNumber; private final AtomicInteger fileCount = new AtomicInteger(0); + public ManifestOutputFileFactory( + Supplier<Table> tableSupplier, + Map<String, String> props, + String flinkJobId, + String operatorId) { + this.tableSupplier = tableSupplier; + this.props = props; + this.flinkJobId = flinkJobId; + this.operatorUniqueId = operatorId; + this.subTaskId = 0; Review Comment: does this constructor make sense? is this correct? note that subTaskId and attemptNumber were used in file name patterns in this class. ``` private String generatePath(long checkpointId) { return FileFormat.AVRO.addExtension( String.format( "%s-%s-%05d-%d-%d-%05d", flinkJobId, operatorUniqueId, subTaskId, attemptNumber, checkpointId, fileCount.incrementAndGet())); ``` On paper, setting them to 0 can cause collisions and overrides. Granted that commit always happen on subtask 0 with the `global` shuffle. Hence subTaskId may not matter much. But `attemptId` could still cause override behavior. ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/committer/IcebergWriteAggregator.java: ########## @@ -0,0 +1,130 @@ +/* + * 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.util.Collection; +import org.apache.flink.annotation.Internal; +import org.apache.flink.core.io.SimpleVersionedSerialization; +import org.apache.flink.streaming.api.connector.sink2.CommittableMessage; +import org.apache.flink.streaming.api.connector.sink2.CommittableSummary; +import org.apache.flink.streaming.api.connector.sink2.CommittableWithLineage; +import org.apache.flink.streaming.api.operators.AbstractStreamOperator; +import org.apache.flink.streaming.api.operators.OneInputStreamOperator; +import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; +import org.apache.iceberg.Table; +import org.apache.iceberg.flink.TableLoader; +import org.apache.iceberg.flink.sink.DeltaManifests; +import org.apache.iceberg.flink.sink.DeltaManifestsSerializer; +import org.apache.iceberg.flink.sink.FlinkManifestUtil; +import org.apache.iceberg.flink.sink.ManifestOutputFileFactory; +import org.apache.iceberg.io.WriteResult; +import org.apache.iceberg.relocated.com.google.common.collect.Sets; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Operator which aggregates the individual {@link WriteResult} objects) to a single {@link + * IcebergCommittable} per checkpoint (storing the serialized {@link DeltaManifests}, jobId, + * operatorId, checkpointId) + */ +@Internal +public class IcebergWriteAggregator + extends AbstractStreamOperator<CommittableMessage<IcebergCommittable>> + implements OneInputStreamOperator< + CommittableMessage<WriteResult>, CommittableMessage<IcebergCommittable>> { + private static final Logger LOG = LoggerFactory.getLogger(IcebergWriteAggregator.class); + private static final byte[] EMPTY_MANIFEST_DATA = new byte[0]; + private final Collection<WriteResult> results; + private transient ManifestOutputFileFactory icebergManifestOutputFileFactory; + private transient Table table; + private final TableLoader tableLoader; + private static final int FORMAT_V2 = 2; + private static final Long DUMMY_SNAPSHOT_ID = 0L; + + public IcebergWriteAggregator(TableLoader tableLoader) { Review Comment: this operator doesn't commit. it probably only needs a `SerializableTable` for read only. since we don't refresh the table state, ` table.spec()` would also always point to the spec at the time of loading. any spec/schema change would require job restart, which is still the expectation today. ########## flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/committer/IcebergCommitter.java: ########## @@ -0,0 +1,350 @@ +/* + * 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.List; +import java.util.Map; +import java.util.NavigableMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.TimeUnit; +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.connector.sink2.Committer; +import org.apache.flink.core.io.SimpleVersionedSerialization; +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.FlinkManifestUtil; +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.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.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 IcebergCommittable} 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> + */ +@Internal +public class IcebergCommitter implements Committer<IcebergCommittable>, Serializable { + private static final long serialVersionUID = 1L; + private static final String MAX_COMMITTED_CHECKPOINT_ID = "flink.max-committed-checkpoint-id"; + private static final Logger LOG = LoggerFactory.getLogger(IcebergCommitter.class); + private static final byte[] EMPTY_MANIFEST_DATA = new byte[0]; + public static final WriteResult EMPTY_WRITE_RESULT = + WriteResult.builder() + .addDataFiles(Lists.newArrayList()) + .addDeleteFiles(Lists.newArrayList()) + .build(); + + private static final long INITIAL_CHECKPOINT_ID = -1L; + + @VisibleForTesting + static final String MAX_CONTINUOUS_EMPTY_COMMITS = "flink.max-continuous-empty-commits"; + + public static final String FLINK_JOB_ID = "flink.job-id"; + public static final String OPERATOR_ID = "flink.operator-id"; + private final String branch; + private final Map<String, String> snapshotProperties; + private final boolean replacePartitions; + private transient IcebergFilesCommitterMetrics committerMetrics; + private transient Table table; + private transient int maxContinuousEmptyCommits; + private transient ExecutorService workerPool; + private transient int continuousEmptyCheckpoints = 0; + + public IcebergCommitter( + TableLoader tableLoader, + String branch, + Map<String, String> snapshotProperties, + boolean replacePartitions, + int workerPoolSize, + String sinkId, + IcebergFilesCommitterMetrics committerMetrics) { + this.branch = branch; + this.snapshotProperties = snapshotProperties; + this.replacePartitions = replacePartitions; + this.committerMetrics = committerMetrics; + + if (!tableLoader.isOpen()) { + tableLoader.open(); + } + + this.table = tableLoader.loadTable(); + this.maxContinuousEmptyCommits = + PropertyUtil.propertyAsInt(table.properties(), MAX_CONTINUOUS_EMPTY_COMMITS, 10); + Preconditions.checkArgument( + maxContinuousEmptyCommits > 0, MAX_CONTINUOUS_EMPTY_COMMITS + " must be positive"); + this.workerPool = + ThreadPools.newWorkerPool("iceberg-committer-pool-" + table + "-" + sinkId, workerPoolSize); Review Comment: should be table name, not `table` object here -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
