YannByron commented on code in PR #6697: URL: https://github.com/apache/hudi/pull/6697#discussion_r973990387
########## hudi-client/hudi-client-common/src/main/java/org/apache/hudi/io/HoodieCDCLogger.java: ########## @@ -0,0 +1,245 @@ +/* + * 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.io; + +import org.apache.avro.Schema; +import org.apache.avro.generic.GenericData; +import org.apache.avro.generic.GenericRecord; +import org.apache.avro.generic.IndexedRecord; + +import org.apache.hudi.avro.HoodieAvroUtils; +import org.apache.hudi.common.config.TypedProperties; +import org.apache.hudi.common.model.HoodieAvroPayload; +import org.apache.hudi.common.model.HoodieRecord; +import org.apache.hudi.common.table.HoodieTableConfig; +import org.apache.hudi.common.table.cdc.HoodieCDCOperation; +import org.apache.hudi.common.table.cdc.HoodieCDCSupplementalLoggingMode; +import org.apache.hudi.common.table.cdc.HoodieCDCUtils; +import org.apache.hudi.common.table.log.AppendResult; +import org.apache.hudi.common.table.log.HoodieLogFormat; +import org.apache.hudi.common.table.log.block.HoodieCDCDataBlock; +import org.apache.hudi.common.table.log.block.HoodieLogBlock; +import org.apache.hudi.common.util.DefaultSizeEstimator; +import org.apache.hudi.common.util.Option; +import org.apache.hudi.common.util.collection.ExternalSpillableMap; +import org.apache.hudi.config.HoodieWriteConfig; +import org.apache.hudi.exception.HoodieException; +import org.apache.hudi.exception.HoodieIOException; +import org.apache.hudi.exception.HoodieUpsertException; +import org.apache.hudi.keygen.KeyGenUtils; +import org.apache.hudi.keygen.KeyGenerator; +import org.apache.hudi.keygen.constant.KeyGeneratorOptions; + +import java.io.Closeable; +import java.io.IOException; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.concurrent.atomic.AtomicLong; +import java.util.stream.Collectors; + +public class HoodieCDCLogger implements Closeable { + + private final String commitTime; + + private final String keyField; + + private final Schema dataSchema; + + private final boolean populateMetaFields; + + private final KeyGenerator keyGenerator; + + // writer for cdc data + private final HoodieLogFormat.Writer cdcWriter; + + private final boolean cdcEnabled; + + private final HoodieCDCSupplementalLoggingMode cdcSupplementalLoggingMode; + + private final Schema cdcSchema; + + // the cdc data + private final Map<String, HoodieAvroPayload> cdcData; + + // the count of records currently being written, used to generate the same seqno for the cdc data + private final AtomicLong writtenRecordCount = new AtomicLong(-1); + + public HoodieCDCLogger( + String commitTime, + HoodieWriteConfig config, + HoodieTableConfig tableConfig, + Schema schema, + HoodieLogFormat.Writer cdcWriter, + long maxInMemorySizeInBytes) { + try { + this.commitTime = commitTime; + this.dataSchema = HoodieAvroUtils.removeMetadataFields(schema); + this.populateMetaFields = config.populateMetaFields(); + this.keyField = populateMetaFields ? HoodieRecord.RECORD_KEY_METADATA_FIELD + : tableConfig.getRecordKeyFieldProp(); + + TypedProperties props = new TypedProperties(); + props.put(HoodieWriteConfig.KEYGENERATOR_CLASS_NAME.key(), tableConfig.getKeyGeneratorClassName()); + props.put(KeyGeneratorOptions.RECORDKEY_FIELD_NAME.key(), tableConfig.getRecordKeyFieldProp()); + props.put(KeyGeneratorOptions.PARTITIONPATH_FIELD_NAME.key(), tableConfig.getPartitionFieldProp()); + this.keyGenerator = KeyGenUtils.createKeyGeneratorByClassName(new TypedProperties(props)); + this.cdcWriter = cdcWriter; + + this.cdcEnabled = config.getBooleanOrDefault(HoodieTableConfig.CDC_ENABLED); + this.cdcSupplementalLoggingMode = HoodieCDCSupplementalLoggingMode.parse( + config.getStringOrDefault(HoodieTableConfig.CDC_SUPPLEMENTAL_LOGGING_MODE)); + + if (cdcSupplementalLoggingMode.equals(HoodieCDCSupplementalLoggingMode.WITH_BEFORE_AFTER)) { + this.cdcSchema = HoodieCDCUtils.CDC_SCHEMA; + } else if (cdcSupplementalLoggingMode.equals(HoodieCDCSupplementalLoggingMode.WITH_BEFORE)) { + this.cdcSchema = HoodieCDCUtils.CDC_SCHEMA_OP_RECORDKEY_BEFORE; + } else { + this.cdcSchema = HoodieCDCUtils.CDC_SCHEMA_OP_AND_RECORDKEY; + } + + this.cdcData = new ExternalSpillableMap<>( + maxInMemorySizeInBytes, + config.getSpillableMapBasePath(), + new DefaultSizeEstimator<>(), + new DefaultSizeEstimator<>(), + config.getCommonConfig().getSpillableDiskMapType(), + config.getCommonConfig().isBitCaskDiskMapCompressionEnabled() + ); + } catch (IOException e) { + throw new HoodieUpsertException("Failed to initialize HoodieCDCLogger", e); + } + } + + public void put(HoodieRecord hoodieRecord, GenericRecord oldRecord, Option<IndexedRecord> indexedRecord) { + if (cdcEnabled) { + String recordKey; + if (oldRecord == null) { + recordKey = hoodieRecord.getRecordKey(); + } else { + recordKey = this.keyGenerator.getKey(oldRecord).getRecordKey(); + } Review Comment: yes, here can use `hoodieRecord.getRecordKey` directly. `HoodieMergeHandle` guarantees that the old/new record has the same key. -- This is an automated message from the Apache Git Service. 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