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[HUDI-1335] Introduce FlinkHoodieSimpleIndex to hudi-flink-client (#2271)

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wangxianghu
2021-02-03 08:59:49 +08:00
committed by GitHub
parent 50ff9ab2d2
commit d74d8e2084
2 changed files with 145 additions and 0 deletions
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3
hudi-client/hudi-flink-client/src/main/java/org/apache/hudi/index/FlinkHoodieIndex.java
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@@ -29,6 +29,7 @@ import org.apache.hudi.common.util.ReflectionUtils;
import org.apache.hudi.common.util.StringUtils;
import org.apache.hudi.config.HoodieWriteConfig;
import org.apache.hudi.exception.HoodieIndexException;
import org.apache.hudi.index.simple.FlinkHoodieSimpleIndex;
import org.apache.hudi.index.bloom.FlinkHoodieBloomIndex;
import org.apache.hudi.index.state.FlinkInMemoryStateIndex;
import org.apache.hudi.PublicAPIMethod;
@@ -61,6 +62,8 @@ public abstract class FlinkHoodieIndex<T extends HoodieRecordPayload> extends Ho
return new FlinkInMemoryStateIndex<>(context, config);
case BLOOM:
return new FlinkHoodieBloomIndex(config);
case SIMPLE:
return new FlinkHoodieSimpleIndex<>(config);
default:
throw new HoodieIndexException("Unsupported index type " + config.getIndexType());
}

142
hudi-client/hudi-flink-client/src/main/java/org/apache/hudi/index/simple/FlinkHoodieSimpleIndex.java Normal file
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@@ -0,0 +1,142 @@
/*
* 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.index.simple;
import org.apache.hudi.client.WriteStatus;
import org.apache.hudi.common.engine.HoodieEngineContext;
import org.apache.hudi.common.model.HoodieBaseFile;
import org.apache.hudi.common.model.HoodieKey;
import org.apache.hudi.common.model.HoodieRecord;
import org.apache.hudi.common.model.HoodieRecordLocation;
import org.apache.hudi.common.model.HoodieRecordPayload;
import org.apache.hudi.common.util.Option;
import org.apache.hudi.common.util.collection.Pair;
import org.apache.hudi.config.HoodieWriteConfig;
import org.apache.hudi.exception.HoodieIndexException;
import org.apache.hudi.index.FlinkHoodieIndex;
import org.apache.hudi.index.HoodieIndexUtils;
import org.apache.hudi.io.HoodieKeyLocationFetchHandle;
import org.apache.hudi.table.HoodieTable;
import avro.shaded.com.google.common.collect.Lists;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import static org.apache.hudi.index.HoodieIndexUtils.getLatestBaseFilesForAllPartitions;
/**
* A simple index which reads interested fields(record key and partition path) from base files and
* compares with incoming records to find the tagged location.
*
* @param <T> type of payload
*/
public class FlinkHoodieSimpleIndex<T extends HoodieRecordPayload> extends FlinkHoodieIndex<T> {
public FlinkHoodieSimpleIndex(HoodieWriteConfig config) {
super(config);
}
@Override
public List<WriteStatus> updateLocation(List<WriteStatus> writeStatuses, HoodieEngineContext context,
HoodieTable<T, List<HoodieRecord<T>>, List<HoodieKey>, List<WriteStatus>> hoodieTable) throws HoodieIndexException {
return writeStatuses;
}
@Override
public boolean rollbackCommit(String instantTime) {
return true;
}
@Override
public boolean isGlobal() {
return false;
}
@Override
public boolean canIndexLogFiles() {
return false;
}
@Override
public boolean isImplicitWithStorage() {
return true;
}
@Override
public List<HoodieRecord<T>> tagLocation(List<HoodieRecord<T>> hoodieRecords, HoodieEngineContext context,
HoodieTable<T, List<HoodieRecord<T>>, List<HoodieKey>, List<WriteStatus>> hoodieTable) throws HoodieIndexException {
return tagLocationInternal(hoodieRecords, context, hoodieTable);
}
/**
* Tags records location for incoming records.
*/
private List<HoodieRecord<T>> tagLocationInternal(List<HoodieRecord<T>> hoodieRecords, HoodieEngineContext context,
HoodieTable<T, List<HoodieRecord<T>>, List<HoodieKey>, List<WriteStatus>> hoodieTable) {
Map<HoodieKey, HoodieRecord<T>> keyedInputRecords = context.mapToPair(hoodieRecords, record -> Pair.of(record.getKey(), record), 0);
Map<HoodieKey, HoodieRecordLocation> existingLocationsOnTable = fetchRecordLocationsForAffectedPartitions(keyedInputRecords.keySet(), context, hoodieTable, config.getSimpleIndexParallelism());
List<HoodieRecord<T>> taggedRecords = new LinkedList<>();
for (Map.Entry<HoodieKey, HoodieRecord<T>> hoodieKeyHoodieRecordEntry : keyedInputRecords.entrySet()) {
HoodieKey key = hoodieKeyHoodieRecordEntry.getKey();
HoodieRecord<T> record = hoodieKeyHoodieRecordEntry.getValue();
if (existingLocationsOnTable.containsKey(key)) {
taggedRecords.add(HoodieIndexUtils.getTaggedRecord(record, Option.ofNullable(existingLocationsOnTable.get(key))));
}
}
return taggedRecords;
}
/**
* Fetch record locations for passed in {@link HoodieKey}s.
*
* @param keySet {@link HoodieKey}s for which locations are fetched
* @param context instance of {@link HoodieEngineContext} to use
* @param hoodieTable instance of {@link HoodieTable} of interest
* @param parallelism parallelism to use
* @return {@link Map} of {@link HoodieKey} and {@link HoodieRecordLocation}
*/
private Map<HoodieKey, HoodieRecordLocation> fetchRecordLocationsForAffectedPartitions(Set<HoodieKey> keySet,
HoodieEngineContext context,
HoodieTable<T, List<HoodieRecord<T>>, List<HoodieKey>, List<WriteStatus>> hoodieTable,
int parallelism) {
List<String> affectedPartitionPathList = keySet.stream().map(HoodieKey::getPartitionPath).distinct().collect(Collectors.toList());
List<Pair<String, HoodieBaseFile>> latestBaseFiles = getLatestBaseFilesForAllPartitions(affectedPartitionPathList, context, hoodieTable);
return fetchRecordLocations(context, hoodieTable, parallelism, latestBaseFiles);
}
private Map<HoodieKey, HoodieRecordLocation> fetchRecordLocations(HoodieEngineContext context,
HoodieTable<T, List<HoodieRecord<T>>, List<HoodieKey>, List<WriteStatus>> hoodieTable,
int parallelism,
List<Pair<String, HoodieBaseFile>> latestBaseFiles) {
List<HoodieKeyLocationFetchHandle<T, List<HoodieRecord<T>>, List<HoodieKey>, List<WriteStatus>>> hoodieKeyLocationFetchHandles =
context.map(latestBaseFiles, partitionPathBaseFile -> new HoodieKeyLocationFetchHandle<>(config, hoodieTable, partitionPathBaseFile), parallelism);
Map<HoodieKey, HoodieRecordLocation> recordLocations = new HashMap<>();
hoodieKeyLocationFetchHandles.stream()
.flatMap(handle -> Lists.newArrayList(handle.locations()).stream())
.forEach(x -> x.forEach(y -> recordLocations.put(y.getKey(), y.getRight())));
return recordLocations;
}
}