JingsongLi commented on code in PR #5480: URL: https://github.com/apache/paimon/pull/5480#discussion_r2048271330
########## paimon-flink/paimon-flink-common/src/main/java/org/apache/paimon/flink/clone/CloneHiveUtils.java: ########## @@ -0,0 +1,415 @@ +/* + * 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.paimon.flink.clone; + +import org.apache.paimon.CoreOptions; +import org.apache.paimon.catalog.Catalog; +import org.apache.paimon.catalog.CatalogContext; +import org.apache.paimon.catalog.DelegateCatalog; +import org.apache.paimon.catalog.Identifier; +import org.apache.paimon.data.BinaryRow; +import org.apache.paimon.flink.FlinkCatalogFactory; +import org.apache.paimon.flink.action.CloneHiveAction; +import org.apache.paimon.format.FileFormat; +import org.apache.paimon.format.SimpleColStats; +import org.apache.paimon.format.SimpleStatsExtractor; +import org.apache.paimon.fs.FileIO; +import org.apache.paimon.fs.Path; +import org.apache.paimon.hive.HiveCatalog; +import org.apache.paimon.hive.migrate.HiveMigrateUtils; +import org.apache.paimon.hive.migrate.HivePartitionFiles; +import org.apache.paimon.io.DataFileMeta; +import org.apache.paimon.manifest.FileSource; +import org.apache.paimon.migrate.FileMetaUtils; +import org.apache.paimon.options.CatalogOptions; +import org.apache.paimon.options.Options; +import org.apache.paimon.schema.Schema; +import org.apache.paimon.statistics.SimpleColStatsCollector; +import org.apache.paimon.stats.SimpleStats; +import org.apache.paimon.stats.SimpleStatsConverter; +import org.apache.paimon.table.FileStoreTable; +import org.apache.paimon.table.sink.BatchTableCommit; +import org.apache.paimon.table.sink.ChannelComputer; +import org.apache.paimon.table.sink.CommitMessage; +import org.apache.paimon.types.RowType; +import org.apache.paimon.utils.IOUtils; +import org.apache.paimon.utils.Pair; +import org.apache.paimon.utils.StatsCollectorFactories; +import org.apache.paimon.utils.StringUtils; + +import org.apache.flink.api.java.tuple.Tuple2; +import org.apache.flink.streaming.api.datastream.DataStream; +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; +import org.apache.flink.streaming.api.functions.ProcessFunction; +import org.apache.flink.util.Collector; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.io.Serializable; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Objects; + +import static org.apache.paimon.options.CatalogOptions.WAREHOUSE; +import static org.apache.paimon.utils.Preconditions.checkArgument; +import static org.apache.paimon.utils.Preconditions.checkNotNull; +import static org.apache.paimon.utils.Preconditions.checkState; + +/** Utils for building {@link CloneHiveAction}. */ +public class CloneHiveUtils { + + private static final Logger LOG = LoggerFactory.getLogger(CloneHiveUtils.class); + + public static DataStream<Tuple2<Identifier, Identifier>> buildSource( + String sourceDatabase, + String sourceTableName, + String targetDatabase, + String targetTableName, + Catalog sourceCatalog, + StreamExecutionEnvironment env) + throws Exception { + List<Tuple2<Identifier, Identifier>> result = new ArrayList<>(); + HiveCatalog hiveCatalog = checkAndGetHiveCatalog(sourceCatalog); + if (StringUtils.isNullOrWhitespaceOnly(sourceDatabase)) { + checkArgument( + StringUtils.isNullOrWhitespaceOnly(sourceTableName), + "sourceTableName must be blank when database is null."); + checkArgument( + StringUtils.isNullOrWhitespaceOnly(targetDatabase), + "targetDatabase must be blank when clone all tables in a catalog."); + checkArgument( + StringUtils.isNullOrWhitespaceOnly(targetTableName), + "targetTableName must be blank when clone all tables in a catalog."); + + for (Identifier identifier : HiveMigrateUtils.listTables(hiveCatalog)) { + result.add(new Tuple2<>(identifier, identifier)); + } + } else if (StringUtils.isNullOrWhitespaceOnly(sourceTableName)) { + checkArgument( + !StringUtils.isNullOrWhitespaceOnly(targetDatabase), + "targetDatabase must not be blank when clone all tables in a database."); + checkArgument( + StringUtils.isNullOrWhitespaceOnly(targetTableName), + "targetTableName must be blank when clone all tables in a catalog."); + + for (Identifier identifier : HiveMigrateUtils.listTables(hiveCatalog, sourceDatabase)) { + result.add( + new Tuple2<>( + identifier, + Identifier.create(targetDatabase, identifier.getObjectName()))); + } + } else { + checkArgument( + !StringUtils.isNullOrWhitespaceOnly(targetDatabase), + "targetDatabase must not be blank when clone a table."); + checkArgument( + !StringUtils.isNullOrWhitespaceOnly(targetTableName), + "targetTableName must not be blank when clone a table."); + result.add( + new Tuple2<>( + Identifier.create(sourceDatabase, sourceTableName), + Identifier.create(targetDatabase, targetTableName))); + } + + checkState(!result.isEmpty(), "Didn't find any table in source catalog."); + + if (LOG.isDebugEnabled()) { + LOG.debug("The clone identifiers of source table and target table are: {}", result); + } + return env.fromCollection(result).forceNonParallel(); + } + + public static ProcessFunction<Tuple2<Identifier, Identifier>, List<CloneFilesInfo>> + createTargetTableAndListFilesFunction( + Map<String, String> sourceCatalogConfig, + Map<String, String> targetCatalogConfig) { + return new ProcessFunction<Tuple2<Identifier, Identifier>, List<CloneFilesInfo>>() { + @Override + public void processElement( + Tuple2<Identifier, Identifier> tuple, + ProcessFunction<Tuple2<Identifier, Identifier>, List<CloneFilesInfo>>.Context + context, + Collector<List<CloneFilesInfo>> collector) + throws Exception { + String sourceType = sourceCatalogConfig.get(CatalogOptions.METASTORE.key()); + checkNotNull(sourceType); + try (Catalog sourceCatalog = + FlinkCatalogFactory.createPaimonCatalog( + Options.fromMap(sourceCatalogConfig)); + Catalog targetCatalog = + FlinkCatalogFactory.createPaimonCatalog( + Options.fromMap(targetCatalogConfig))) { + + HiveCatalog hiveCatalog = checkAndGetHiveCatalog(sourceCatalog); + + Schema schema = HiveMigrateUtils.hiveTableToPaimonSchema(hiveCatalog, tuple.f0); + Map<String, String> options = schema.options(); + // only support Hive to unaware-bucket table now + options.put(CoreOptions.BUCKET.key(), "-1"); + schema = + new Schema( + schema.fields(), + schema.partitionKeys(), + schema.primaryKeys(), + options, + schema.comment()); + targetCatalog.createTable(tuple.f1, schema, false); + FileStoreTable table = (FileStoreTable) targetCatalog.getTable(tuple.f1); + List<HivePartitionFiles> allPartitions = + HiveMigrateUtils.listFiles( + hiveCatalog, + tuple.f0, + table.schema().logicalPartitionType(), + table.coreOptions().partitionDefaultName()); + List<CloneFilesInfo> cloneFilesInfos = new ArrayList<>(); + for (HivePartitionFiles partitionFiles : allPartitions) { + cloneFilesInfos.add(CloneFilesInfo.fromHive(tuple.f1, partitionFiles, 0)); + } + collector.collect(cloneFilesInfos); + } + } + }; + } + + public static ProcessFunction<List<CloneFilesInfo>, Void> copyAndCommitFunction( + Map<String, String> sourceCatalogConfig, Map<String, String> targetCatalogConfig) { + return new ProcessFunction<List<CloneFilesInfo>, Void>() { + + @Override + public void processElement( + List<CloneFilesInfo> cloneFilesInfos, + ProcessFunction<List<CloneFilesInfo>, Void>.Context context, + Collector<Void> collector) + throws Exception { + try (Catalog targetCatalog = + FlinkCatalogFactory.createPaimonCatalog( + Options.fromMap(targetCatalogConfig))) { + + // source FileIO + CatalogContext sourceContext = + CatalogContext.create(Options.fromMap(sourceCatalogConfig)); + String warehouse = checkNotNull(sourceContext.options().get(WAREHOUSE)); + FileIO sourceFileIO = FileIO.get(new Path(warehouse), sourceContext); + + // group by table + Map<Identifier, List<CloneFilesInfo>> groupedFiles = new HashMap<>(); + for (CloneFilesInfo files : cloneFilesInfos) { + groupedFiles + .computeIfAbsent(files.identifier(), k -> new ArrayList<>()) + .add(files); + } + + for (Map.Entry<Identifier, List<CloneFilesInfo>> entry : + groupedFiles.entrySet()) { + FileStoreTable targetTable = + (FileStoreTable) targetCatalog.getTable(entry.getKey()); + commit(entry.getValue(), sourceFileIO, targetTable); Review Comment: Commit should be done in a committer node for one table. -- This is an automated message from the Apache Git Service. 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