org.apache.hudi.metadata.HoodieMetadataPayload Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
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* to you under the Apache License, Version 2.0 (the
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* 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.metadata;
import org.apache.hudi.avro.model.HoodieMetadataBloomFilter;
import org.apache.hudi.avro.model.HoodieMetadataColumnStats;
import org.apache.hudi.avro.model.HoodieMetadataFileInfo;
import org.apache.hudi.avro.model.HoodieMetadataRecord;
import org.apache.hudi.avro.model.HoodieRecordIndexInfo;
import org.apache.hudi.common.fs.FSUtils;
import org.apache.hudi.common.model.EmptyHoodieRecordPayload;
import org.apache.hudi.common.model.HoodieAvroRecord;
import org.apache.hudi.common.model.HoodieColumnRangeMetadata;
import org.apache.hudi.common.model.HoodieKey;
import org.apache.hudi.common.model.HoodieRecord;
import org.apache.hudi.common.model.HoodieRecordGlobalLocation;
import org.apache.hudi.common.model.HoodieRecordPayload;
import org.apache.hudi.common.table.timeline.HoodieActiveTimeline;
import org.apache.hudi.common.util.Option;
import org.apache.hudi.common.util.hash.ColumnIndexID;
import org.apache.hudi.common.util.hash.FileIndexID;
import org.apache.hudi.common.util.hash.PartitionIndexID;
import org.apache.hudi.exception.HoodieMetadataException;
import org.apache.hudi.hadoop.CachingPath;
import org.apache.hudi.io.storage.HoodieAvroHFileReader;
import org.apache.hudi.util.Lazy;
import org.apache.avro.Schema;
import org.apache.avro.generic.GenericRecord;
import org.apache.avro.generic.IndexedRecord;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import javax.annotation.Nullable;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Collection;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Properties;
import java.util.UUID;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static org.apache.hudi.avro.HoodieAvroUtils.unwrapAvroValueWrapper;
import static org.apache.hudi.avro.HoodieAvroUtils.wrapValueIntoAvro;
import static org.apache.hudi.common.util.TypeUtils.unsafeCast;
import static org.apache.hudi.common.util.ValidationUtils.checkArgument;
import static org.apache.hudi.common.util.ValidationUtils.checkState;
import static org.apache.hudi.hadoop.CachingPath.createRelativePathUnsafe;
import static org.apache.hudi.metadata.HoodieTableMetadata.RECORDKEY_PARTITION_LIST;
/**
* MetadataTable records are persisted with the schema defined in HoodieMetadata.avsc.
* This class represents the payload for the MetadataTable.
*
* This single metadata payload is shared by all the partitions under the metadata table.
* The partition specific records are determined by the field "type" saved within the record.
* The following types are supported:
*
* METADATA_TYPE_PARTITION_LIST (1):
* -- List of all partitions. There is a single such record
* -- key = @{@link HoodieTableMetadata#RECORDKEY_PARTITION_LIST}
*
* METADATA_TYPE_FILE_LIST (2):
* -- List of all files in a partition. There is one such record for each partition
* -- key = partition name
*
* METADATA_TYPE_COLUMN_STATS (3):
* -- This is an index for column stats in the table
*
* METADATA_TYPE_BLOOM_FILTER (4):
* -- This is an index for base file bloom filters. This is a map of FileID to its BloomFilter byte[].
*
* During compaction on the table, the deletions are merged with additions and hence records are pruned.
*/
public class HoodieMetadataPayload implements HoodieRecordPayload {
/**
* Type of the record. This can be an enum in the schema but Avro1.8
* has a bug - https://issues.apache.org/jira/browse/AVRO-1810
*/
protected static final int METADATA_TYPE_PARTITION_LIST = 1;
protected static final int METADATA_TYPE_FILE_LIST = 2;
protected static final int METADATA_TYPE_COLUMN_STATS = 3;
protected static final int METADATA_TYPE_BLOOM_FILTER = 4;
private static final int METADATA_TYPE_RECORD_INDEX = 5;
/**
* HoodieMetadata schema field ids
*/
public static final String KEY_FIELD_NAME = HoodieAvroHFileReader.KEY_FIELD_NAME;
public static final String SCHEMA_FIELD_NAME_TYPE = "type";
public static final String SCHEMA_FIELD_NAME_METADATA = "filesystemMetadata";
public static final String SCHEMA_FIELD_ID_COLUMN_STATS = "ColumnStatsMetadata";
public static final String SCHEMA_FIELD_ID_BLOOM_FILTER = "BloomFilterMetadata";
public static final String SCHEMA_FIELD_ID_RECORD_INDEX = "recordIndexMetadata";
/**
* HoodieMetadata bloom filter payload field ids
*/
private static final String FIELD_IS_DELETED = "isDeleted";
private static final String BLOOM_FILTER_FIELD_TYPE = "type";
private static final String BLOOM_FILTER_FIELD_TIMESTAMP = "timestamp";
private static final String BLOOM_FILTER_FIELD_BLOOM_FILTER = "bloomFilter";
private static final String BLOOM_FILTER_FIELD_IS_DELETED = FIELD_IS_DELETED;
/**
* HoodieMetadata column stats payload field ids
*/
public static final String COLUMN_STATS_FIELD_MIN_VALUE = "minValue";
public static final String COLUMN_STATS_FIELD_MAX_VALUE = "maxValue";
public static final String COLUMN_STATS_FIELD_NULL_COUNT = "nullCount";
public static final String COLUMN_STATS_FIELD_VALUE_COUNT = "valueCount";
public static final String COLUMN_STATS_FIELD_TOTAL_SIZE = "totalSize";
public static final String COLUMN_STATS_FIELD_FILE_NAME = "fileName";
public static final String COLUMN_STATS_FIELD_COLUMN_NAME = "columnName";
public static final String COLUMN_STATS_FIELD_TOTAL_UNCOMPRESSED_SIZE = "totalUncompressedSize";
public static final String COLUMN_STATS_FIELD_IS_DELETED = FIELD_IS_DELETED;
/**
* HoodieMetadata record index payload field ids
*/
public static final String RECORD_INDEX_FIELD_PARTITION = "partitionName";
public static final String RECORD_INDEX_FIELD_FILEID_HIGH_BITS = "fileIdHighBits";
public static final String RECORD_INDEX_FIELD_FILEID_LOW_BITS = "fileIdLowBits";
public static final String RECORD_INDEX_FIELD_FILE_INDEX = "fileIndex";
public static final String RECORD_INDEX_FIELD_INSTANT_TIME = "instantTime";
public static final String RECORD_INDEX_FIELD_FILEID = "fileId";
public static final String RECORD_INDEX_FIELD_FILEID_ENCODING = "fileIdEncoding";
public static final int RECORD_INDEX_FIELD_FILEID_ENCODING_UUID = 0;
public static final int RECORD_INDEX_FIELD_FILEID_ENCODING_RAW_STRING = 1;
/**
* FileIndex value saved in record index record when the fileId has no index (old format of base filename)
*/
public static final int RECORD_INDEX_MISSING_FILEINDEX_FALLBACK = -1;
/**
* NOTE: PLEASE READ CAREFULLY
*
* In Avro 1.10 generated builders rely on {@code SpecificData.getForSchema} invocation that in turn
* does use reflection to load the code-gen'd class corresponding to the Avro record model. This has
* serious adverse effects in terms of performance when gets executed on the hot-path (both, in terms
* of runtime and efficiency).
*
* To work this around instead of using default code-gen'd builder invoking {@code SpecificData.getForSchema},
* we instead rely on overloaded ctor accepting another instance of the builder: {@code Builder(Builder)},
* which bypasses such invocation. Following corresponding builder's stubs are statically initialized
* to be used exactly for that purpose.
*
* You can find more details in HUDI-3834.
*/
private static final Lazy METADATA_COLUMN_STATS_BUILDER_STUB = Lazy.lazily(HoodieMetadataColumnStats::newBuilder);
private static final HoodieMetadataFileInfo DELETE_FILE_METADATA = new HoodieMetadataFileInfo(0L, true);
private String key = null;
private int type = 0;
private Map filesystemMetadata = null;
private HoodieMetadataBloomFilter bloomFilterMetadata = null;
private HoodieMetadataColumnStats columnStatMetadata = null;
private HoodieRecordIndexInfo recordIndexMetadata;
private boolean isDeletedRecord = false;
public HoodieMetadataPayload(@Nullable GenericRecord record, Comparable orderingVal) {
this(Option.ofNullable(record));
}
public HoodieMetadataPayload(Option recordOpt) {
if (recordOpt.isPresent()) {
GenericRecord record = recordOpt.get();
// This can be simplified using SpecificData.deepcopy once this bug is fixed
// https://issues.apache.org/jira/browse/AVRO-1811
//
// NOTE: {@code HoodieMetadataRecord} has to always carry both "key" and "type" fields
// for it to be handled appropriately, therefore these fields have to be reflected
// in any (read-)projected schema
key = record.get(KEY_FIELD_NAME).toString();
type = (int) record.get(SCHEMA_FIELD_NAME_TYPE);
if (type == METADATA_TYPE_FILE_LIST || type == METADATA_TYPE_PARTITION_LIST) {
Map metadata = getNestedFieldValue(record, SCHEMA_FIELD_NAME_METADATA);
if (metadata != null) {
filesystemMetadata = metadata;
filesystemMetadata.keySet().forEach(k -> {
GenericRecord v = filesystemMetadata.get(k);
filesystemMetadata.put(k, new HoodieMetadataFileInfo((Long) v.get("size"), (Boolean) v.get("isDeleted")));
});
}
} else if (type == METADATA_TYPE_BLOOM_FILTER) {
GenericRecord bloomFilterRecord = getNestedFieldValue(record, SCHEMA_FIELD_ID_BLOOM_FILTER);
// NOTE: Only legitimate reason for {@code BloomFilterMetadata} to not be present is when
// it's not been read from the storage (ie it's not been a part of projected schema).
// Otherwise, it has to be present or the record would be considered invalid
if (bloomFilterRecord == null) {
checkArgument(record.getSchema().getField(SCHEMA_FIELD_ID_BLOOM_FILTER) == null,
String.format("Valid %s record expected for type: %s", SCHEMA_FIELD_ID_BLOOM_FILTER, METADATA_TYPE_COLUMN_STATS));
} else {
bloomFilterMetadata = new HoodieMetadataBloomFilter(
(String) bloomFilterRecord.get(BLOOM_FILTER_FIELD_TYPE),
(String) bloomFilterRecord.get(BLOOM_FILTER_FIELD_TIMESTAMP),
(ByteBuffer) bloomFilterRecord.get(BLOOM_FILTER_FIELD_BLOOM_FILTER),
(Boolean) bloomFilterRecord.get(BLOOM_FILTER_FIELD_IS_DELETED)
);
}
} else if (type == METADATA_TYPE_COLUMN_STATS) {
GenericRecord columnStatsRecord = getNestedFieldValue(record, SCHEMA_FIELD_ID_COLUMN_STATS);
// NOTE: Only legitimate reason for {@code ColumnStatsMetadata} to not be present is when
// it's not been read from the storage (ie it's not been a part of projected schema).
// Otherwise, it has to be present or the record would be considered invalid
if (columnStatsRecord == null) {
checkArgument(record.getSchema().getField(SCHEMA_FIELD_ID_COLUMN_STATS) == null,
String.format("Valid %s record expected for type: %s", SCHEMA_FIELD_ID_COLUMN_STATS, METADATA_TYPE_COLUMN_STATS));
} else {
columnStatMetadata = HoodieMetadataColumnStats.newBuilder(METADATA_COLUMN_STATS_BUILDER_STUB.get())
.setFileName((String) columnStatsRecord.get(COLUMN_STATS_FIELD_FILE_NAME))
.setColumnName((String) columnStatsRecord.get(COLUMN_STATS_FIELD_COLUMN_NAME))
// AVRO-2377 1.9.2 Modified the type of org.apache.avro.Schema#FIELD_RESERVED to Collections.unmodifiableSet.
// This causes Kryo to fail when deserializing a GenericRecord, See HUDI-5484.
// We should avoid using GenericRecord and convert GenericRecord into a serializable type.
.setMinValue(wrapValueIntoAvro(unwrapAvroValueWrapper(columnStatsRecord.get(COLUMN_STATS_FIELD_MIN_VALUE))))
.setMaxValue(wrapValueIntoAvro(unwrapAvroValueWrapper(columnStatsRecord.get(COLUMN_STATS_FIELD_MAX_VALUE))))
.setValueCount((Long) columnStatsRecord.get(COLUMN_STATS_FIELD_VALUE_COUNT))
.setNullCount((Long) columnStatsRecord.get(COLUMN_STATS_FIELD_NULL_COUNT))
.setTotalSize((Long) columnStatsRecord.get(COLUMN_STATS_FIELD_TOTAL_SIZE))
.setTotalUncompressedSize((Long) columnStatsRecord.get(COLUMN_STATS_FIELD_TOTAL_UNCOMPRESSED_SIZE))
.setIsDeleted((Boolean) columnStatsRecord.get(COLUMN_STATS_FIELD_IS_DELETED))
.build();
}
} else if (type == METADATA_TYPE_RECORD_INDEX) {
GenericRecord recordIndexRecord = getNestedFieldValue(record, SCHEMA_FIELD_ID_RECORD_INDEX);
recordIndexMetadata = new HoodieRecordIndexInfo(recordIndexRecord.get(RECORD_INDEX_FIELD_PARTITION).toString(),
Long.parseLong(recordIndexRecord.get(RECORD_INDEX_FIELD_FILEID_HIGH_BITS).toString()),
Long.parseLong(recordIndexRecord.get(RECORD_INDEX_FIELD_FILEID_LOW_BITS).toString()),
Integer.parseInt(recordIndexRecord.get(RECORD_INDEX_FIELD_FILE_INDEX).toString()),
recordIndexRecord.get(RECORD_INDEX_FIELD_FILEID).toString(),
Long.parseLong(recordIndexRecord.get(RECORD_INDEX_FIELD_INSTANT_TIME).toString()),
Integer.parseInt(recordIndexRecord.get(RECORD_INDEX_FIELD_FILEID_ENCODING).toString()));
}
} else {
this.isDeletedRecord = true;
}
}
private HoodieMetadataPayload(String key, int type, Map filesystemMetadata) {
this(key, type, filesystemMetadata, null, null, null);
}
private HoodieMetadataPayload(String key, HoodieMetadataBloomFilter metadataBloomFilter) {
this(key, METADATA_TYPE_BLOOM_FILTER, null, metadataBloomFilter, null, null);
}
private HoodieMetadataPayload(String key, HoodieMetadataColumnStats columnStats) {
this(key, METADATA_TYPE_COLUMN_STATS, null, null, columnStats, null);
}
private HoodieMetadataPayload(String key, HoodieRecordIndexInfo recordIndexMetadata) {
this(key, METADATA_TYPE_RECORD_INDEX, null, null, null, recordIndexMetadata);
}
protected HoodieMetadataPayload(String key, int type,
Map filesystemMetadata,
HoodieMetadataBloomFilter metadataBloomFilter,
HoodieMetadataColumnStats columnStats,
HoodieRecordIndexInfo recordIndexMetadata) {
this.key = key;
this.type = type;
this.filesystemMetadata = filesystemMetadata;
this.bloomFilterMetadata = metadataBloomFilter;
this.columnStatMetadata = columnStats;
this.recordIndexMetadata = recordIndexMetadata;
}
/**
* Create and return a {@code HoodieMetadataPayload} to save list of partitions.
*
* @param partitions The list of partitions
*/
public static HoodieRecord createPartitionListRecord(List partitions) {
return createPartitionListRecord(partitions, false);
}
/**
* Create and return a {@code HoodieMetadataPayload} to save list of partitions.
*
* @param partitions The list of partitions
*/
public static HoodieRecord createPartitionListRecord(List partitions, boolean isDeleted) {
Map fileInfo = new HashMap<>();
partitions.forEach(partition -> fileInfo.put(HoodieTableMetadataUtil.getPartitionIdentifierForFilesPartition(partition), new HoodieMetadataFileInfo(0L, isDeleted)));
HoodieKey key = new HoodieKey(RECORDKEY_PARTITION_LIST, MetadataPartitionType.FILES.getPartitionPath());
HoodieMetadataPayload payload = new HoodieMetadataPayload(key.getRecordKey(), METADATA_TYPE_PARTITION_LIST,
fileInfo);
return new HoodieAvroRecord<>(key, payload);
}
/**
* Create and return a {@code HoodieMetadataPayload} to save list of files within a partition.
*
* @param partition The name of the partition
* @param filesAdded Mapping of files to their sizes for files which have been added to this partition
* @param filesDeleted List of files which have been deleted from this partition
*/
public static HoodieRecord createPartitionFilesRecord(String partition,
Map filesAdded,
List filesDeleted) {
String partitionIdentifier = HoodieTableMetadataUtil.getPartitionIdentifierForFilesPartition(partition);
int size = filesAdded.size() + filesDeleted.size();
Map fileInfo = new HashMap<>(size, 1);
filesAdded.forEach((fileName, fileSize) -> {
// Assert that the file-size of the file being added is positive, since Hudi
// should not be creating empty files
checkState(fileSize > 0);
fileInfo.put(fileName, new HoodieMetadataFileInfo(fileSize, false));
});
filesDeleted.forEach(fileName -> fileInfo.put(fileName, DELETE_FILE_METADATA));
HoodieKey key = new HoodieKey(partitionIdentifier, MetadataPartitionType.FILES.getPartitionPath());
HoodieMetadataPayload payload = new HoodieMetadataPayload(key.getRecordKey(), METADATA_TYPE_FILE_LIST, fileInfo);
return new HoodieAvroRecord<>(key, payload);
}
/**
* Create bloom filter metadata record.
*
* @param partitionName - Partition name
* @param baseFileName - Base file name for which the bloom filter needs to persisted
* @param timestamp - Instant timestamp responsible for this record
* @param bloomFilter - Bloom filter for the File
* @param isDeleted - Is the bloom filter no more valid
* @return Metadata payload containing the fileID and its bloom filter record
*/
public static HoodieRecord createBloomFilterMetadataRecord(final String partitionName,
final String baseFileName,
final String timestamp,
final String bloomFilterType,
final ByteBuffer bloomFilter,
final boolean isDeleted) {
checkArgument(!baseFileName.contains(Path.SEPARATOR)
&& FSUtils.isBaseFile(new Path(baseFileName)),
"Invalid base file '" + baseFileName + "' for MetaIndexBloomFilter!");
final String bloomFilterIndexKey = getBloomFilterRecordKey(partitionName, baseFileName);
HoodieKey key = new HoodieKey(bloomFilterIndexKey, MetadataPartitionType.BLOOM_FILTERS.getPartitionPath());
HoodieMetadataBloomFilter metadataBloomFilter =
new HoodieMetadataBloomFilter(bloomFilterType, timestamp, bloomFilter, isDeleted);
HoodieMetadataPayload metadataPayload = new HoodieMetadataPayload(key.getRecordKey(), metadataBloomFilter);
return new HoodieAvroRecord<>(key, metadataPayload);
}
@Override
public HoodieMetadataPayload preCombine(HoodieMetadataPayload previousRecord) {
if (this.isDeletedRecord) {
// This happens when a record has been deleted. The previous version of the record should be ignored.
return this;
}
if (previousRecord.isDeletedRecord) {
// This happens when a record with same key is added after a deletion.
return this;
}
// Validation of record merge scenario. Only records of same type and key can be combined.
checkArgument(previousRecord.type == type,
"Cannot combine " + previousRecord.type + " with " + type);
checkArgument(previousRecord.key.equals(key),
"Cannot combine " + previousRecord.key + " with " + key + " as the keys differ");
switch (type) {
case METADATA_TYPE_PARTITION_LIST:
case METADATA_TYPE_FILE_LIST:
Map combinedFileInfo = combineFileSystemMetadata(previousRecord);
return new HoodieMetadataPayload(key, type, combinedFileInfo);
case METADATA_TYPE_BLOOM_FILTER:
HoodieMetadataBloomFilter combineBloomFilterMetadata = combineBloomFilterMetadata(previousRecord);
return new HoodieMetadataPayload(key, combineBloomFilterMetadata);
case METADATA_TYPE_COLUMN_STATS:
return new HoodieMetadataPayload(key, combineColumnStatsMetadata(previousRecord));
case METADATA_TYPE_RECORD_INDEX:
// There is always a single mapping and the latest mapping is maintained.
// Mappings in record index can change in two scenarios:
// 1. A key deleted from dataset and then added again (new filedID)
// 2. A key moved to a different file due to clustering
// No need to merge with previous record index, always pick the latest payload.
return this;
default:
throw new HoodieMetadataException("Unknown type of HoodieMetadataPayload: " + type);
}
}
private static String getBloomFilterRecordKey(String partitionName, String fileName) {
return new PartitionIndexID(HoodieTableMetadataUtil.getBloomFilterIndexPartitionIdentifier(partitionName)).asBase64EncodedString()
.concat(new FileIndexID(fileName).asBase64EncodedString());
}
private HoodieMetadataBloomFilter combineBloomFilterMetadata(HoodieMetadataPayload previousRecord) {
// Bloom filters are always additive. No need to merge with previous bloom filter
return this.bloomFilterMetadata;
}
private HoodieMetadataColumnStats combineColumnStatsMetadata(HoodieMetadataPayload previousRecord) {
checkArgument(previousRecord.getColumnStatMetadata().isPresent());
checkArgument(getColumnStatMetadata().isPresent());
HoodieMetadataColumnStats previousColStatsRecord = previousRecord.getColumnStatMetadata().get();
HoodieMetadataColumnStats newColumnStatsRecord = getColumnStatMetadata().get();
return mergeColumnStatsRecords(previousColStatsRecord, newColumnStatsRecord);
}
@Override
public Option combineAndGetUpdateValue(IndexedRecord oldRecord, Schema schema, Properties properties) throws IOException {
HoodieMetadataPayload anotherPayload = new HoodieMetadataPayload(Option.of((GenericRecord) oldRecord));
HoodieRecordPayload combinedPayload = preCombine(anotherPayload);
return combinedPayload.getInsertValue(schema, properties);
}
@Override
public Option combineAndGetUpdateValue(IndexedRecord oldRecord, Schema schema) throws IOException {
return combineAndGetUpdateValue(oldRecord, schema, new Properties());
}
@Override
public Option getInsertValue(Schema schemaIgnored, Properties propertiesIgnored) throws IOException {
if (key == null || this.isDeletedRecord) {
return Option.empty();
}
HoodieMetadataRecord record = new HoodieMetadataRecord(key, type, filesystemMetadata, bloomFilterMetadata,
columnStatMetadata, recordIndexMetadata);
return Option.of(record);
}
@Override
public Option getInsertValue(Schema schema) throws IOException {
return getInsertValue(schema, new Properties());
}
/**
* Returns the list of filenames added as part of this record.
*/
public List getFilenames() {
return filterFileInfoEntries(false).map(Map.Entry::getKey).sorted().collect(Collectors.toList());
}
/**
* Returns the list of filenames deleted as part of this record.
*/
public List getDeletions() {
return filterFileInfoEntries(true).map(Map.Entry::getKey).sorted().collect(Collectors.toList());
}
/**
* Get the bloom filter metadata from this payload.
*/
public Option getBloomFilterMetadata() {
if (bloomFilterMetadata == null) {
return Option.empty();
}
return Option.of(bloomFilterMetadata);
}
/**
* Get the bloom filter metadata from this payload.
*/
public Option getColumnStatMetadata() {
if (columnStatMetadata == null) {
return Option.empty();
}
return Option.of(columnStatMetadata);
}
/**
* Returns the files added as part of this record.
*/
public FileStatus[] getFileStatuses(Configuration hadoopConf, Path partitionPath) throws IOException {
FileSystem fs = partitionPath.getFileSystem(hadoopConf);
return getFileStatuses(fs, partitionPath);
}
/**
* Returns the files added as part of this record.
*/
public FileStatus[] getFileStatuses(FileSystem fs, Path partitionPath) {
long blockSize = fs.getDefaultBlockSize(partitionPath);
return filterFileInfoEntries(false)
.map(e -> {
// NOTE: Since we know that the Metadata Table's Payload is simply a file-name we're
// creating Hadoop's Path using more performant unsafe variant
CachingPath filePath = new CachingPath(partitionPath, createRelativePathUnsafe(e.getKey()));
return new FileStatus(e.getValue().getSize(), false, 0, blockSize, 0, 0,
null, null, null, filePath);
})
.toArray(FileStatus[]::new);
}
private Stream> filterFileInfoEntries(boolean isDeleted) {
if (filesystemMetadata == null) {
return Stream.empty();
}
return filesystemMetadata.entrySet().stream().filter(e -> e.getValue().getIsDeleted() == isDeleted);
}
private Map combineFileSystemMetadata(HoodieMetadataPayload previousRecord) {
Map combinedFileInfo = new HashMap<>();
// First, add all files listed in the previous record
if (previousRecord.filesystemMetadata != null) {
combinedFileInfo.putAll(previousRecord.filesystemMetadata);
}
// Second, merge in the files listed in the new record
if (filesystemMetadata != null) {
validatePayload(type, filesystemMetadata);
filesystemMetadata.forEach((key, fileInfo) -> {
combinedFileInfo.merge(key, fileInfo,
// Combine previous record w/ the new one, new records taking precedence over
// the old one
//
// NOTE: That if previous listing contains the file that is being deleted by the tombstone
// record (`IsDeleted` = true) in the new one, we simply delete the file from the resulting
// listing as well as drop the tombstone itself.
// However, if file is not present in the previous record we have to persist tombstone
// record in the listing to make sure we carry forward information that this file
// was deleted. This special case could occur since the merging flow is 2-stage:
// - First we merge records from all of the delta log-files
// - Then we merge records from base-files with the delta ones (coming as a result
// of the previous step)
(oldFileInfo, newFileInfo) ->
// NOTE: We can’t assume that MT update records will be ordered the same way as actual
// FS operations (since they are not atomic), therefore MT record merging should be a
// _commutative_ & _associative_ operation (ie one that would work even in case records
// will get re-ordered), which is
// - Possible for file-sizes (since file-sizes will ever grow, we can simply
// take max of the old and new records)
// - Not possible for is-deleted flags*
//
// *However, we’re assuming that the case of concurrent write and deletion of the same
// file is _impossible_ -- it would only be possible with concurrent upsert and
// rollback operation (affecting the same log-file), which is implausible, b/c either
// of the following have to be true:
// - We’re appending to failed log-file (then the other writer is trying to
// rollback it concurrently, before it’s own write)
// - Rollback (of completed instant) is running concurrently with append (meaning
// that restore is running concurrently with a write, which is also nut supported
// currently)
newFileInfo.getIsDeleted()
? null
: new HoodieMetadataFileInfo(Math.max(newFileInfo.getSize(), oldFileInfo.getSize()), false));
});
}
return combinedFileInfo;
}
/**
* Get bloom filter index key.
*
* @param partitionIndexID - Partition index id
* @param fileIndexID - File index id
* @return Bloom filter index key
*/
public static String getBloomFilterIndexKey(PartitionIndexID partitionIndexID, FileIndexID fileIndexID) {
return partitionIndexID.asBase64EncodedString()
.concat(fileIndexID.asBase64EncodedString());
}
/**
* Get column stats index key.
*
* @param partitionIndexID - Partition index id
* @param fileIndexID - File index id
* @param columnIndexID - Column index id
* @return Column stats index key
*/
public static String getColumnStatsIndexKey(PartitionIndexID partitionIndexID, FileIndexID fileIndexID, ColumnIndexID columnIndexID) {
return columnIndexID.asBase64EncodedString()
.concat(partitionIndexID.asBase64EncodedString())
.concat(fileIndexID.asBase64EncodedString());
}
/**
* Get column stats index key from the column range metadata.
*
* @param partitionName - Partition name
* @param columnRangeMetadata - Column range metadata
* @return Column stats index key
*/
public static String getColumnStatsIndexKey(String partitionName, HoodieColumnRangeMetadata columnRangeMetadata) {
final PartitionIndexID partitionIndexID = new PartitionIndexID(HoodieTableMetadataUtil.getColumnStatsIndexPartitionIdentifier(partitionName));
final FileIndexID fileIndexID = new FileIndexID(new Path(columnRangeMetadata.getFilePath()).getName());
final ColumnIndexID columnIndexID = new ColumnIndexID(columnRangeMetadata.getColumnName());
return getColumnStatsIndexKey(partitionIndexID, fileIndexID, columnIndexID);
}
public static Stream createColumnStatsRecords(String partitionName,
Collection> columnRangeMetadataList,
boolean isDeleted) {
return columnRangeMetadataList.stream().map(columnRangeMetadata -> {
HoodieKey key = new HoodieKey(getColumnStatsIndexKey(partitionName, columnRangeMetadata),
MetadataPartitionType.COLUMN_STATS.getPartitionPath());
HoodieMetadataPayload payload = new HoodieMetadataPayload(key.getRecordKey(),
HoodieMetadataColumnStats.newBuilder()
.setFileName(new Path(columnRangeMetadata.getFilePath()).getName())
.setColumnName(columnRangeMetadata.getColumnName())
.setMinValue(wrapValueIntoAvro(columnRangeMetadata.getMinValue()))
.setMaxValue(wrapValueIntoAvro(columnRangeMetadata.getMaxValue()))
.setNullCount(columnRangeMetadata.getNullCount())
.setValueCount(columnRangeMetadata.getValueCount())
.setTotalSize(columnRangeMetadata.getTotalSize())
.setTotalUncompressedSize(columnRangeMetadata.getTotalUncompressedSize())
.setIsDeleted(isDeleted)
.build());
return new HoodieAvroRecord<>(key, payload);
});
}
@SuppressWarnings({"rawtypes", "unchecked"})
private static HoodieMetadataColumnStats mergeColumnStatsRecords(HoodieMetadataColumnStats prevColumnStats,
HoodieMetadataColumnStats newColumnStats) {
checkArgument(Objects.equals(prevColumnStats.getFileName(), newColumnStats.getFileName()));
checkArgument(Objects.equals(prevColumnStats.getColumnName(), newColumnStats.getColumnName()));
// We're handling 2 cases in here
// - New record is a tombstone: in this case it simply overwrites previous state
// - Previous record is a tombstone: in that case new proper record would also
// be simply overwriting previous state
if (newColumnStats.getIsDeleted() || prevColumnStats.getIsDeleted()) {
return newColumnStats;
}
Comparable minValue =
(Comparable) Stream.of(
(Comparable) unwrapAvroValueWrapper(prevColumnStats.getMinValue()),
(Comparable) unwrapAvroValueWrapper(newColumnStats.getMinValue()))
.filter(Objects::nonNull)
.min(Comparator.naturalOrder())
.orElse(null);
Comparable maxValue =
(Comparable) Stream.of(
(Comparable) unwrapAvroValueWrapper(prevColumnStats.getMaxValue()),
(Comparable) unwrapAvroValueWrapper(newColumnStats.getMaxValue()))
.filter(Objects::nonNull)
.max(Comparator.naturalOrder())
.orElse(null);
return HoodieMetadataColumnStats.newBuilder(METADATA_COLUMN_STATS_BUILDER_STUB.get())
.setFileName(newColumnStats.getFileName())
.setColumnName(newColumnStats.getColumnName())
.setMinValue(wrapValueIntoAvro(minValue))
.setMaxValue(wrapValueIntoAvro(maxValue))
.setValueCount(prevColumnStats.getValueCount() + newColumnStats.getValueCount())
.setNullCount(prevColumnStats.getNullCount() + newColumnStats.getNullCount())
.setTotalSize(prevColumnStats.getTotalSize() + newColumnStats.getTotalSize())
.setTotalUncompressedSize(prevColumnStats.getTotalUncompressedSize() + newColumnStats.getTotalUncompressedSize())
.setIsDeleted(newColumnStats.getIsDeleted())
.build();
}
/**
* Create and return a {@code HoodieMetadataPayload} to insert or update an entry for the record index.
*
* Each entry maps the key of a single record in HUDI to its location.
*
* @param recordKey Key of the record
* @param partition Name of the partition which contains the record
* @param fileId fileId which contains the record
* @param instantTime instantTime when the record was added
*/
public static HoodieRecord createRecordIndexUpdate(String recordKey, String partition,
String fileId, String instantTime, int fileIdEncoding) {
HoodieKey key = new HoodieKey(recordKey, MetadataPartitionType.RECORD_INDEX.getPartitionPath());
long instantTimeMillis = -1;
try {
instantTimeMillis = HoodieActiveTimeline.parseDateFromInstantTime(instantTime).getTime();
} catch (Exception e) {
throw new HoodieMetadataException("Failed to create metadata payload for record index. Instant time parsing for " + instantTime + " failed ", e);
}
if (fileIdEncoding == 0) {
// Data file names have a -D suffix to denote the index (D = integer) of the file written
// In older HUID versions the file index was missing
final UUID uuid;
final int fileIndex;
try {
if (fileId.length() == 36) {
uuid = UUID.fromString(fileId);
fileIndex = RECORD_INDEX_MISSING_FILEINDEX_FALLBACK;
} else {
final int index = fileId.lastIndexOf("-");
uuid = UUID.fromString(fileId.substring(0, index));
fileIndex = Integer.parseInt(fileId.substring(index + 1));
}
} catch (Exception e) {
throw new HoodieMetadataException(String.format("Invalid UUID or index: fileID=%s, partition=%s, instantTIme=%s",
fileId, partition, instantTime), e);
}
HoodieMetadataPayload payload = new HoodieMetadataPayload(recordKey,
new HoodieRecordIndexInfo(
partition,
uuid.getMostSignificantBits(),
uuid.getLeastSignificantBits(),
fileIndex,
"",
instantTimeMillis,
0));
return new HoodieAvroRecord<>(key, payload);
} else {
HoodieMetadataPayload payload = new HoodieMetadataPayload(recordKey,
new HoodieRecordIndexInfo(
partition,
-1L,
-1L,
-1,
fileId,
instantTimeMillis,
1));
return new HoodieAvroRecord<>(key, payload);
}
}
/**
* Create and return a {@code HoodieMetadataPayload} to delete a record in the Metadata Table's record index.
*
* @param recordKey Key of the record to be deleted
*/
public static HoodieRecord createRecordIndexDelete(String recordKey) {
HoodieKey key = new HoodieKey(recordKey, MetadataPartitionType.RECORD_INDEX.getPartitionPath());
return new HoodieAvroRecord<>(key, new EmptyHoodieRecordPayload());
}
/**
* If this is a record-level index entry, returns the file to which this is mapped.
*/
public HoodieRecordGlobalLocation getRecordGlobalLocation() {
return HoodieTableMetadataUtil.getLocationFromRecordIndexInfo(recordIndexMetadata);
}
public boolean isDeleted() {
return isDeletedRecord;
}
@Override
public boolean equals(Object other) {
if (other == this) {
return true;
} else if (!(other instanceof HoodieMetadataPayload)) {
return false;
}
HoodieMetadataPayload otherMetadataPayload = (HoodieMetadataPayload) other;
return this.type == otherMetadataPayload.type
&& Objects.equals(this.key, otherMetadataPayload.key)
&& Objects.equals(this.filesystemMetadata, otherMetadataPayload.filesystemMetadata)
&& Objects.equals(this.bloomFilterMetadata, otherMetadataPayload.bloomFilterMetadata)
&& Objects.equals(this.columnStatMetadata, otherMetadataPayload.columnStatMetadata)
&& Objects.equals(this.recordIndexMetadata, otherMetadataPayload.recordIndexMetadata);
}
@Override
public int hashCode() {
return Objects.hash(key, type, filesystemMetadata, bloomFilterMetadata, columnStatMetadata);
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("HoodieMetadataPayload {");
sb.append(KEY_FIELD_NAME + "=").append(key).append(", ");
sb.append(SCHEMA_FIELD_NAME_TYPE + "=").append(type).append(", ");
switch (type) {
case METADATA_TYPE_PARTITION_LIST:
case METADATA_TYPE_FILE_LIST:
sb.append("Files: {");
sb.append("creations=").append(Arrays.toString(getFilenames().toArray())).append(", ");
sb.append("deletions=").append(Arrays.toString(getDeletions().toArray())).append(", ");
sb.append("}");
break;
case METADATA_TYPE_BLOOM_FILTER:
checkState(getBloomFilterMetadata().isPresent());
sb.append("BloomFilter: {");
sb.append("bloom size: ").append(getBloomFilterMetadata().get().getBloomFilter().array().length).append(", ");
sb.append("timestamp: ").append(getBloomFilterMetadata().get().getTimestamp()).append(", ");
sb.append("deleted: ").append(getBloomFilterMetadata().get().getIsDeleted());
sb.append("}");
break;
case METADATA_TYPE_COLUMN_STATS:
checkState(getColumnStatMetadata().isPresent());
sb.append("ColStats: {");
sb.append(getColumnStatMetadata().get());
sb.append("}");
break;
case METADATA_TYPE_RECORD_INDEX:
sb.append("RecordIndex: {");
sb.append("location=").append(getRecordGlobalLocation());
sb.append("}");
break;
default:
break;
}
sb.append('}');
return sb.toString();
}
private static void validatePayload(int type, Map filesystemMetadata) {
if (type == METADATA_TYPE_FILE_LIST) {
filesystemMetadata.forEach((fileName, fileInfo) -> {
checkState(fileInfo.getIsDeleted() || fileInfo.getSize() > 0, "Existing files should have size > 0");
});
}
}
private static T getNestedFieldValue(GenericRecord record, String fieldName) {
// NOTE: This routine is more lightweight than {@code HoodieAvroUtils.getNestedFieldVal}
if (record.getSchema().getField(fieldName) == null) {
return null;
}
return unsafeCast(record.get(fieldName));
}
}