Introduces the new IcebergSink based on the new V2 Flink Sink Abstraction

flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/FlinkManifestUtil.java

@@ -33,9 +33,14 @@
 import org.apache.iceberg.io.FileIO;
 import org.apache.iceberg.io.OutputFile;
 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.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 class FlinkManifestUtil {
+
+  private static final Logger LOG = LoggerFactory.getLogger(FlinkManifestUtil.class);
   private static final int FORMAT_V2 = 2;
   private static final Long DUMMY_SNAPSHOT_ID = 0L;
 
@@ -129,4 +134,26 @@ static WriteResult readCompletedFiles(
 
     return builder.addReferencedDataFiles(deltaManifests.referencedDataFiles()).build();
   }
+
+  static void deleteCommittedManifests(
+      Table table, List<ManifestFile> manifests, String newFlinkJobId, long checkpointId) {
+    for (ManifestFile manifest : manifests) {
+      try {
+        table.io().deleteFile(manifest.path());
+      } catch (Exception e) {
+        // The flink manifests cleaning failure shouldn't abort the completed checkpoint.
+        String details =
+            MoreObjects.toStringHelper(FlinkManifestUtil.class)
+                .add("tableName", table.name())
+                .add("flinkJobId", newFlinkJobId)
+                .add("checkpointId", checkpointId)
+                .add("manifestPath", manifest.path())
+                .toString();
+        LOG.warn(
+            "The iceberg transaction has been committed, but we failed to clean the temporary flink manifests: {}",
+            details,
+            e);
+      }
+    }
+  }
 }

flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/FlinkSink.java

@@ -406,7 +406,8 @@ private <T> DataStreamSink<T> chainIcebergOperators() {
       flinkWriteConf = new FlinkWriteConf(table, writeOptions, readableConfig);
 
       // Find out the equality field id list based on the user-provided equality field column names.
-      List<Integer> equalityFieldIds = checkAndGetEqualityFieldIds();
+      List<Integer> equalityFieldIds =
+          SinkUtil.checkAndGetEqualityFieldIds(table, equalityFieldColumns);
 
       RowType flinkRowType = toFlinkRowType(table.schema(), tableSchema);
       int writerParallelism =

flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergCommittable.java

@@ -0,0 +1,95 @@
+/*
+ * 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.Serializable;
+import java.util.Arrays;
+import java.util.Objects;
+import org.apache.iceberg.relocated.com.google.common.base.MoreObjects;
+
+/**
+ * The aggregated results of a single checkpoint which should be committed. Containing the
+ * serialized {@link org.apache.iceberg.flink.sink.DeltaManifests} file - which contains the commit
+ * data, and the jobId, operatorId, checkpointId triplet which helps identifying the specific commit
+ *
+ * <p>{@link IcebergCommittableSerializer} is used for serializing the objects between the Writer
+ * and the Aggregator operator and between the Aggregator and the Committer as well.
+ */
+class IcebergCommittable implements Serializable {
+  private final byte[] manifest;
+  private final String jobId;
+  private final String operatorId;
+  private final long checkpointId;
+
+  IcebergCommittable(byte[] manifest, String jobId, String operatorId, long checkpointId) {
+    this.manifest = manifest;
+    this.jobId = jobId;
+    this.operatorId = operatorId;
+    this.checkpointId = checkpointId;
+  }
+
+  byte[] manifest() {
+    return manifest;
+  }
+
+  String jobId() {
+    return jobId;
+  }
+
+  String operatorId() {
+    return operatorId;
+  }
+
+  Long checkpointId() {
+    return checkpointId;
+  }
+
+  @Override
+  public String toString() {
+    return MoreObjects.toStringHelper(this)
+        .add("jobId", jobId)
+        .add("checkpointId", checkpointId)
+        .add("operatorId", operatorId)
+        .toString();
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+
+    IcebergCommittable that = (IcebergCommittable) o;
+    return checkpointId == that.checkpointId
+        && Arrays.equals(manifest, that.manifest)
+        && Objects.equals(jobId, that.jobId)
+        && Objects.equals(operatorId, that.operatorId);
+  }
+
+  @Override
+  public int hashCode() {
+    int result = Objects.hash(jobId, operatorId, checkpointId);
+    result = 31 * result + Arrays.hashCode(manifest);
+    return result;
+  }
+}

flink/v1.19/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergCommittableSerializer.java

@@ -0,0 +1,68 @@
+/*
+ * 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.ByteArrayOutputStream;
+import java.io.IOException;
+import org.apache.flink.core.io.SimpleVersionedSerializer;
+import org.apache.flink.core.memory.DataInputDeserializer;
+import org.apache.flink.core.memory.DataOutputViewStreamWrapper;
+
+/**
+ * This serializer is used for serializing the {@link IcebergCommittable} objects between the Writer
+ * and the Aggregator operator and between the Aggregator and the Committer as well.
+ *
+ * <p>In both cases only the respective part is serialized.
+ */
+class IcebergCommittableSerializer implements SimpleVersionedSerializer<IcebergCommittable> {
+  private static final int VERSION = 1;
+
+  @Override
+  public int getVersion() {
+    return VERSION;
+  }
+
+  @Override
+  public byte[] serialize(IcebergCommittable committable) throws IOException {
+    ByteArrayOutputStream out = new ByteArrayOutputStream();
+    DataOutputViewStreamWrapper view = new DataOutputViewStreamWrapper(out);
+    view.writeUTF(committable.jobId());
+    view.writeUTF(committable.operatorId());
+    view.writeLong(committable.checkpointId());
+    view.writeInt(committable.manifest().length);
+    view.write(committable.manifest());
+    return out.toByteArray();
+  }
+
+  @Override
+  public IcebergCommittable deserialize(int version, byte[] serialized) throws IOException {
+    if (version == 1) {
+      DataInputDeserializer view = new DataInputDeserializer(serialized);
+      String jobId = view.readUTF();
+      String operatorId = view.readUTF();
+      long checkpointId = view.readLong();
+      int manifestLen = view.readInt();
+      byte[] manifestBuf;
+      manifestBuf = new byte[manifestLen];
+      view.read(manifestBuf);
+      return new IcebergCommittable(manifestBuf, jobId, operatorId, checkpointId);
+    }
+    throw new IOException("Unrecognized version or corrupt state: " + version);
+  }
+}