jackye1995 commented on code in PR #5331: URL: https://github.com/apache/iceberg/pull/5331#discussion_r954092386
########## spark/v3.3/spark/src/main/java/org/apache/iceberg/spark/actions/MigrateDeltaLakeTableSparkAction.java: ########## @@ -0,0 +1,383 @@ +/* + * 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.spark.actions; + +import io.delta.standalone.DeltaLog; +import io.delta.standalone.VersionLog; +import io.delta.standalone.actions.Action; +import io.delta.standalone.actions.AddFile; +import io.delta.standalone.actions.RemoveFile; +import java.io.File; +import java.util.Arrays; +import java.util.Collections; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.stream.Collectors; +import org.apache.hadoop.fs.Path; +import org.apache.iceberg.AppendFiles; +import org.apache.iceberg.DataFile; +import org.apache.iceberg.DataFiles; +import org.apache.iceberg.DeleteFiles; +import org.apache.iceberg.FileFormat; +import org.apache.iceberg.Metrics; +import org.apache.iceberg.MetricsConfig; +import org.apache.iceberg.OverwriteFiles; +import org.apache.iceberg.PartitionField; +import org.apache.iceberg.PartitionSpec; +import org.apache.iceberg.Schema; +import org.apache.iceberg.Snapshot; +import org.apache.iceberg.SnapshotSummary; +import org.apache.iceberg.Table; +import org.apache.iceberg.TableProperties; +import org.apache.iceberg.actions.BaseMigrateDeltaLakeTableActionResult; +import org.apache.iceberg.actions.MigrateDeltaLakeTable; +import org.apache.iceberg.data.TableMigrationUtil; +import org.apache.iceberg.exceptions.AlreadyExistsException; +import org.apache.iceberg.exceptions.NoSuchNamespaceException; +import org.apache.iceberg.mapping.NameMapping; +import org.apache.iceberg.mapping.NameMappingParser; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap; +import org.apache.iceberg.relocated.com.google.common.collect.Iterables; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.iceberg.spark.SparkSchemaUtil; +import org.apache.iceberg.spark.source.StagedSparkTable; +import org.apache.spark.sql.SparkSession; +import org.apache.spark.sql.catalyst.analysis.TableAlreadyExistsException; +import org.apache.spark.sql.connector.catalog.CatalogPlugin; +import org.apache.spark.sql.connector.catalog.Identifier; +import org.apache.spark.sql.connector.catalog.StagingTableCatalog; +import org.apache.spark.sql.connector.expressions.LogicalExpressions; +import org.apache.spark.sql.connector.expressions.Transform; +import org.apache.spark.sql.types.DataType; +import org.apache.spark.sql.types.Metadata; +import org.apache.spark.sql.types.StructField; +import org.apache.spark.sql.types.StructType; +import org.jetbrains.annotations.Nullable; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import scala.collection.JavaConverters; + +/** + * Takes a Delta Lake table and attempts to transform it into an Iceberg table in the same location + * with the same identifier. Once complete the identifier which previously referred to a non-Iceberg + * table will refer to the newly migrated Iceberg table. + */ +public class MigrateDeltaLakeTableSparkAction implements MigrateDeltaLakeTable { + + private static final Logger LOG = LoggerFactory.getLogger(MigrateDeltaLakeTableSparkAction.class); + + private final Map<String, String> additionalProperties = Maps.newHashMap(); + private final SparkSession spark; + private final DeltaLog deltaLog; + private final StagingTableCatalog destCatalog; + private final String deltaTableLocation; + private final Identifier newIdentifier; + + MigrateDeltaLakeTableSparkAction( Review Comment: and that class can live in iceberg-core library. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
