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/*
* 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.common.table.view;
import org.apache.hudi.common.config.HoodieCommonConfig;
import org.apache.hudi.common.model.BootstrapBaseFileMapping;
import org.apache.hudi.common.model.CompactionOperation;
import org.apache.hudi.common.model.HoodieFileGroup;
import org.apache.hudi.common.model.HoodieFileGroupId;
import org.apache.hudi.common.table.HoodieTableMetaClient;
import org.apache.hudi.common.table.timeline.HoodieInstant;
import org.apache.hudi.common.table.timeline.HoodieTimeline;
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.common.util.collection.Pair;
import org.apache.hadoop.fs.FileStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Stream;
/**
* Table FileSystemView implementation where view is stored in spillable disk using fixed memory.
*/
public class SpillableMapBasedFileSystemView extends HoodieTableFileSystemView {
private static final Logger LOG = LoggerFactory.getLogger(SpillableMapBasedFileSystemView.class);
private final long maxMemoryForFileGroupMap;
private final long maxMemoryForPendingCompaction;
private final long maxMemoryForPendingLogCompaction;
private final long maxMemoryForBootstrapBaseFile;
private final long maxMemoryForReplaceFileGroups;
private final long maxMemoryForClusteringFileGroups;
private final String baseStoreDir;
private final ExternalSpillableMap.DiskMapType diskMapType;
private final boolean isBitCaskDiskMapCompressionEnabled;
public SpillableMapBasedFileSystemView(HoodieTableMetaClient metaClient, HoodieTimeline visibleActiveTimeline,
FileSystemViewStorageConfig config, HoodieCommonConfig commonConfig) {
super(config.isIncrementalTimelineSyncEnabled());
this.maxMemoryForFileGroupMap = config.getMaxMemoryForFileGroupMap();
this.maxMemoryForPendingCompaction = config.getMaxMemoryForPendingCompaction();
this.maxMemoryForPendingLogCompaction = config.getMaxMemoryForPendingLogCompaction();
this.maxMemoryForBootstrapBaseFile = config.getMaxMemoryForBootstrapBaseFile();
this.maxMemoryForReplaceFileGroups = config.getMaxMemoryForReplacedFileGroups();
this.maxMemoryForClusteringFileGroups = config.getMaxMemoryForPendingClusteringFileGroups();
this.baseStoreDir = config.getSpillableDir();
diskMapType = commonConfig.getSpillableDiskMapType();
isBitCaskDiskMapCompressionEnabled = commonConfig.isBitCaskDiskMapCompressionEnabled();
init(metaClient, visibleActiveTimeline);
}
public SpillableMapBasedFileSystemView(HoodieTableMetaClient metaClient, HoodieTimeline visibleActiveTimeline,
FileStatus[] fileStatuses, FileSystemViewStorageConfig config, HoodieCommonConfig commonConfig) {
this(metaClient, visibleActiveTimeline, config, commonConfig);
addFilesToView(fileStatuses);
}
@Override
protected Map> createPartitionToFileGroups() {
try {
LOG.info("Creating Partition To File groups map using external spillable Map. Max Mem=" + maxMemoryForFileGroupMap
+ ", BaseDir=" + baseStoreDir);
new File(baseStoreDir).mkdirs();
return (Map>) (new ExternalSpillableMap<>(maxMemoryForFileGroupMap, baseStoreDir,
new DefaultSizeEstimator(), new DefaultSizeEstimator<>(),
diskMapType, isBitCaskDiskMapCompressionEnabled));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
protected Map> createFileIdToPendingCompactionMap(
Map> fgIdToPendingCompaction) {
try {
LOG.info("Creating Pending Compaction map using external spillable Map. Max Mem=" + maxMemoryForPendingCompaction
+ ", BaseDir=" + baseStoreDir);
new File(baseStoreDir).mkdirs();
Map> pendingMap = new ExternalSpillableMap<>(
maxMemoryForPendingCompaction, baseStoreDir, new DefaultSizeEstimator(), new DefaultSizeEstimator<>(),
diskMapType, isBitCaskDiskMapCompressionEnabled);
pendingMap.putAll(fgIdToPendingCompaction);
return pendingMap;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
protected Map> createFileIdToPendingLogCompactionMap(
Map> fgIdToPendingLogCompaction) {
try {
LOG.info("Creating Pending Log Compaction map using external spillable Map. Max Mem=" + maxMemoryForPendingLogCompaction
+ ", BaseDir=" + baseStoreDir);
new File(baseStoreDir).mkdirs();
Map> pendingMap = new ExternalSpillableMap<>(
maxMemoryForPendingLogCompaction, baseStoreDir, new DefaultSizeEstimator(), new DefaultSizeEstimator<>(),
diskMapType, isBitCaskDiskMapCompressionEnabled);
pendingMap.putAll(fgIdToPendingLogCompaction);
return pendingMap;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
protected Map createFileIdToBootstrapBaseFileMap(
Map fileGroupIdBootstrapBaseFileMap) {
try {
LOG.info("Creating bootstrap base File Map using external spillable Map. Max Mem=" + maxMemoryForBootstrapBaseFile
+ ", BaseDir=" + baseStoreDir);
new File(baseStoreDir).mkdirs();
Map pendingMap = new ExternalSpillableMap<>(
maxMemoryForBootstrapBaseFile, baseStoreDir, new DefaultSizeEstimator(), new DefaultSizeEstimator<>(),
diskMapType, isBitCaskDiskMapCompressionEnabled);
pendingMap.putAll(fileGroupIdBootstrapBaseFileMap);
return pendingMap;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
protected Map createFileIdToReplaceInstantMap(final Map replacedFileGroups) {
try {
LOG.info("Creating file group id to replace instant map using external spillable Map. Max Mem=" + maxMemoryForReplaceFileGroups
+ ", BaseDir=" + baseStoreDir);
new File(baseStoreDir).mkdirs();
Map pendingMap = new ExternalSpillableMap<>(
maxMemoryForReplaceFileGroups, baseStoreDir, new DefaultSizeEstimator(), new DefaultSizeEstimator<>(),
diskMapType, isBitCaskDiskMapCompressionEnabled);
pendingMap.putAll(replacedFileGroups);
return pendingMap;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
protected Map createFileIdToPendingClusteringMap(final Map fileGroupsInClustering) {
try {
LOG.info("Creating file group id to clustering instant map using external spillable Map. Max Mem=" + maxMemoryForClusteringFileGroups
+ ", BaseDir=" + baseStoreDir);
new File(baseStoreDir).mkdirs();
Map pendingMap = new ExternalSpillableMap<>(
maxMemoryForClusteringFileGroups, baseStoreDir, new DefaultSizeEstimator(), new DefaultSizeEstimator<>(),
diskMapType, isBitCaskDiskMapCompressionEnabled);
pendingMap.putAll(fileGroupsInClustering);
return pendingMap;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
public Stream getAllFileGroups() {
return ((ExternalSpillableMap) partitionToFileGroupsMap).valueStream()
.flatMap(fg -> ((List) fg).stream());
}
@Override
Stream> fetchPendingCompactionOperations() {
return ((ExternalSpillableMap) fgIdToPendingCompaction).valueStream();
}
@Override
Stream> fetchPendingLogCompactionOperations() {
return ((ExternalSpillableMap) fgIdToPendingLogCompaction).valueStream();
}
@Override
Stream fetchBootstrapBaseFiles() {
return ((ExternalSpillableMap) fgIdToBootstrapBaseFile).valueStream();
}
@Override
public Stream fetchAllStoredFileGroups() {
return ((ExternalSpillableMap) partitionToFileGroupsMap).valueStream().flatMap(fg -> ((List) fg).stream());
}
@Override
protected void removeReplacedFileIdsAtInstants(Set instants) {
//TODO should we make this more efficient by having reverse mapping of instant to file group id?
Stream fileIdsToRemove = fgIdToReplaceInstants.entrySet().stream().map(entry -> {
if (instants.contains(entry.getValue().getTimestamp())) {
return Option.of(entry.getKey());
} else {
return Option.ofNullable((HoodieFileGroupId) null);
}
}).filter(Option::isPresent).map(Option::get);
fileIdsToRemove.forEach(fileGroupId -> fgIdToReplaceInstants.remove(fileGroupId));
}
}
