danny0405 commented on code in PR #13078: URL: https://github.com/apache/hudi/pull/13078#discussion_r2049893786
########## hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/table/format/FlinkRowDataReaderContext.java: ########## @@ -0,0 +1,257 @@ +/* + * 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.hudi.table.format; + +import org.apache.hudi.client.model.CommitTimeFlinkRecordMerger; +import org.apache.hudi.client.model.EventTimeFlinkRecordMerger; +import org.apache.hudi.client.model.HoodieFlinkRecord; +import org.apache.hudi.common.config.RecordMergeMode; +import org.apache.hudi.common.engine.EngineType; +import org.apache.hudi.common.engine.HoodieReaderContext; +import org.apache.hudi.common.fs.FSUtils; +import org.apache.hudi.common.model.HoodieEmptyRecord; +import org.apache.hudi.common.model.HoodieFileFormat; +import org.apache.hudi.common.model.HoodieKey; +import org.apache.hudi.common.model.HoodieOperation; +import org.apache.hudi.common.model.HoodieRecord; +import org.apache.hudi.common.model.HoodieRecordMerger; +import org.apache.hudi.common.util.HoodieRecordUtils; +import org.apache.hudi.common.util.Option; +import org.apache.hudi.common.util.ValidationUtils; +import org.apache.hudi.common.util.collection.ClosableIterator; +import org.apache.hudi.configuration.FlinkOptions; +import org.apache.hudi.exception.HoodieException; +import org.apache.hudi.exception.HoodieValidationException; +import org.apache.hudi.source.ExpressionPredicates.Predicate; +import org.apache.hudi.storage.HoodieStorage; +import org.apache.hudi.storage.StorageConfiguration; +import org.apache.hudi.storage.StoragePath; +import org.apache.hudi.util.AvroSchemaConverter; +import org.apache.hudi.util.AvroToRowDataConverters; +import org.apache.hudi.util.FlinkRowProjection; +import org.apache.hudi.util.RowDataAvroQueryContexts; +import org.apache.hudi.util.RowDataUtils; +import org.apache.hudi.util.AvroConverterUtils; +import org.apache.hudi.util.SchemaEvolvingRowDataProjection; + +import org.apache.avro.Schema; +import org.apache.avro.generic.GenericRecord; +import org.apache.avro.generic.IndexedRecord; +import org.apache.flink.table.data.RowData; +import org.apache.flink.table.data.utils.JoinedRowData; +import org.apache.flink.table.runtime.typeutils.RowDataSerializer; +import org.apache.flink.table.types.DataType; +import org.apache.flink.table.types.logical.LogicalType; +import org.apache.flink.table.types.logical.RowType; + +import java.io.IOException; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.function.UnaryOperator; +import java.util.stream.Collectors; + +import static org.apache.hudi.common.config.HoodieReaderConfig.RECORD_MERGE_IMPL_CLASSES_WRITE_CONFIG_KEY; +import static org.apache.hudi.common.model.HoodieRecord.DEFAULT_ORDERING_VALUE; +import static org.apache.hudi.common.model.HoodieRecord.RECORD_KEY_METADATA_FIELD; + +/** + * Implementation of {@link HoodieReaderContext} to read {@link RowData}s from base files or + * log files with Flink parquet reader. + */ +public class FlinkRowDataReaderContext extends HoodieReaderContext<RowData> { + private final List<Predicate> predicates; + private final InternalSchemaManager internalSchemaManager; + private RowDataSerializer rowDataSerializer; + + public FlinkRowDataReaderContext( + StorageConfiguration<?> storageConfiguration, + InternalSchemaManager internalSchemaManager, + List<Predicate> predicates) { + super(storageConfiguration); + this.internalSchemaManager = internalSchemaManager; + this.predicates = predicates; + } + + @Override + public ClosableIterator<RowData> getFileRecordIterator( + StoragePath filePath, + long start, + long length, + Schema dataSchema, + Schema requiredSchema, + HoodieStorage storage) throws IOException { + boolean isLogFile = FSUtils.isLogFile(filePath); + // disable schema evolution in fileReader if it's log file, since schema evolution for log file is handled in `FileGroupRecordBuffer` + InternalSchemaManager schemaManager = isLogFile ? InternalSchemaManager.DISABLED : internalSchemaManager; + RowDataFileReaderFactories.Factory readerFactory = RowDataFileReaderFactories.getFactory(HoodieFileFormat.PARQUET); + RowDataFileReader fileReader = readerFactory.createFileReader(schemaManager, getStorageConfiguration()); + + List<String> fieldNames = dataSchema.getFields().stream().map(Schema.Field::name).collect(Collectors.toList()); + List<DataType> fieldTypes = dataSchema.getFields().stream().map( + f -> AvroSchemaConverter.convertToDataType(f.schema())).collect(Collectors.toList()); + int[] selectedFields = requiredSchema.getFields().stream().map(Schema.Field::name) + .map(fieldNames::indexOf) + .mapToInt(i -> i) + .toArray(); + + return fileReader.getRowDataIterator( + fieldNames, fieldTypes, selectedFields, predicates, filePath, start, length); + } + + @Override + public Option<HoodieRecordMerger> getRecordMerger(RecordMergeMode mergeMode, String mergeStrategyId, String mergeImplClasses) { + switch (mergeMode) { + case EVENT_TIME_ORDERING: + return Option.of(new EventTimeFlinkRecordMerger()); + case COMMIT_TIME_ORDERING: + return Option.of(new CommitTimeFlinkRecordMerger()); + default: + Option<HoodieRecordMerger> mergerClass = + HoodieRecordUtils.createValidRecordMerger(EngineType.FLINK, mergeImplClasses, mergeStrategyId); + if (mergerClass.isEmpty()) { + throw new HoodieValidationException("No valid flink merger implementation set for `" + + RECORD_MERGE_IMPL_CLASSES_WRITE_CONFIG_KEY + "`"); + } + return mergerClass; + } + } + + @Override + public Object getValue(RowData record, Schema schema, String fieldName) { + RowData.FieldGetter fieldGetter = RowDataAvroQueryContexts.fromAvroSchema(schema).getFieldQueryContext(fieldName).getFieldGetter(); + return fieldGetter.getFieldOrNull(record); + } + + @Override + public String getRecordKey(RowData record, Schema schema) { + return Objects.toString(getValue(record, schema, RECORD_KEY_METADATA_FIELD)); + } + + @Override + public HoodieRecord<RowData> constructHoodieRecord(Option<RowData> recordOption, Map<String, Object> metadataMap) { + HoodieKey hoodieKey = new HoodieKey( + (String) metadataMap.get(INTERNAL_META_RECORD_KEY), + (String) metadataMap.get(INTERNAL_META_PARTITION_PATH)); + RowData rowData = recordOption.get(); + // delete record + if (recordOption.isEmpty()) { + Comparable orderingValue; + if (metadataMap.containsKey(INTERNAL_META_ORDERING_FIELD)) { + orderingValue = (Comparable) metadataMap.get(INTERNAL_META_ORDERING_FIELD); + } else { + throw new HoodieException("There should be ordering value in metadataMap."); + } + return new HoodieEmptyRecord<>(hoodieKey, HoodieOperation.DELETE, orderingValue, HoodieRecord.HoodieRecordType.FLINK); + } + return new HoodieFlinkRecord(hoodieKey, rowData); + } + + @Override + public Comparable getOrderingValue(Option<RowData> recordOption, Map<String, Object> metadataMap, Schema schema, Option<String> orderingFieldName) { + if (metadataMap.containsKey(INTERNAL_META_ORDERING_FIELD)) { + return (Comparable) metadataMap.get(INTERNAL_META_ORDERING_FIELD); + } + if (!recordOption.isPresent() || orderingFieldName.isEmpty()) { + return DEFAULT_ORDERING_VALUE; + } + boolean utcTimezone = getStorageConfiguration().getBoolean(FlinkOptions.READ_UTC_TIMEZONE.key(), FlinkOptions.READ_UTC_TIMEZONE.defaultValue()); + RowDataAvroQueryContexts.FieldQueryContext context = RowDataAvroQueryContexts.fromAvroSchema(schema, utcTimezone).getFieldQueryContext(orderingFieldName.get()); + + Comparable finalOrderingVal = (Comparable) context.getValAsJava(recordOption.get()); + metadataMap.put(INTERNAL_META_ORDERING_FIELD, finalOrderingVal); + return finalOrderingVal; + } + + @Override + public RowData seal(RowData rowData) { + if (rowDataSerializer == null) { + RowType requiredRowType = (RowType) AvroSchemaConverter.convertToDataType(getSchemaHandler().getRequiredSchema()).getLogicalType(); Review Comment: a per row serializer? -- This is an automated message from the Apache Git Service. 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