phet commented on code in PR #4058: URL: https://github.com/apache/gobblin/pull/4058#discussion_r1809195112
########## gobblin-data-management/src/main/java/org/apache/gobblin/data/management/copy/iceberg/IcebergPartitionDataset.java: ########## @@ -0,0 +1,236 @@ +/* + * 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.gobblin.data.management.copy.iceberg; + +import com.google.common.base.Preconditions; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Properties; +import java.util.UUID; +import java.util.function.Predicate; + +import org.apache.commons.collections.CollectionUtils; +import org.apache.commons.lang3.StringUtils; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FileStatus; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Path; +import org.apache.iceberg.DataFile; +import org.apache.iceberg.DataFiles; +import org.apache.iceberg.PartitionSpec; +import org.apache.iceberg.StructLike; +import org.apache.iceberg.TableMetadata; +import org.apache.iceberg.TableProperties; +import org.apache.iceberg.util.SerializationUtil; + +import com.google.common.collect.Lists; +import com.google.common.collect.Maps; +import com.google.common.collect.ImmutableList; + +import lombok.Data; +import lombok.extern.slf4j.Slf4j; + +import org.apache.gobblin.data.management.copy.CopyConfiguration; +import org.apache.gobblin.data.management.copy.CopyEntity; +import org.apache.gobblin.data.management.copy.CopyableFile; +import org.apache.gobblin.data.management.copy.entities.PostPublishStep; +import org.apache.gobblin.data.management.copy.CopyableDataset; +import org.apache.gobblin.util.measurement.GrowthMilestoneTracker; +import org.apache.gobblin.data.management.copy.iceberg.predicates.IcebergMatchesAnyPropNamePartitionFilterPredicate; +import org.apache.gobblin.data.management.copy.iceberg.predicates.IcebergPartitionFilterPredicateUtil; + +/** + * Iceberg Partition dataset implementing {@link CopyableDataset} + * <p> + * This class extends {@link IcebergDataset} and provides functionality to filter partitions + * and generate copy entities for partition based data movement. + * </p> + */ +@Slf4j +public class IcebergPartitionDataset extends IcebergDataset { + private static final List<String> supportedTransforms = ImmutableList.of("identity", "truncate"); + private final Predicate<StructLike> partitionFilterPredicate; + private final Map<Path, Path> srcPathToDestPath; Review Comment: collections, like lists and maps are heap-allocated. only a reference is copied and passed on the stack when passing to and from methods. hence it's not expensive for such containers to be method params and/or return values. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
