org.apache.hudi.io

Class HoodieKeyLookupHandle<T extends HoodieRecordPayload,I,K,O>

java.lang.Object

org.apache.hudi.io.HoodieIOHandle<T,I,K,O>

org.apache.hudi.io.HoodieReadHandle<T,I,K,O>

org.apache.hudi.io.HoodieKeyLookupHandle<T,I,K,O>

public class HoodieKeyLookupHandle<T extends HoodieRecordPayload,I,K,O>
extends HoodieReadHandle<T,I,K,O>

Takes a bunch of keys and returns ones that are present in the file group.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HoodieKeyLookupHandle.KeyLookupResult Encapsulates the result from a key lookup.

Field Summary

Fields inherited from class org.apache.hudi.io.HoodieReadHandle

partitionPathFilePair

Fields inherited from class org.apache.hudi.io.HoodieIOHandle

config, fs, hoodieTable, instantTime

Constructor Summary

Constructors

Constructor and Description
HoodieKeyLookupHandle(HoodieWriteConfig config, HoodieTable<T,I,K,O> hoodieTable, Pair<String,String> partitionPathFilePair)

Method Summary

Modifier and Type	Method and Description
void	addKey(String recordKey) Adds the key for look up.
List<String>	checkCandidatesAgainstFile(org.apache.hadoop.conf.Configuration configuration, List<String> candidateRecordKeys, org.apache.hadoop.fs.Path filePath) Given a list of row keys and one file, return only row keys existing in that file.
HoodieKeyLookupHandle.KeyLookupResult	getLookupResult() Of all the keys, that were added, return a list of keys that were actually found in the file group.

Methods inherited from class org.apache.hudi.io.HoodieReadHandle

createNewFileReader, getFileId, getFileSystem, getLatestDataFile, getPartitionPathFilePair

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HoodieKeyLookupHandle

public HoodieKeyLookupHandle(HoodieWriteConfig config,
                             HoodieTable<T,I,K,O> hoodieTable,
                             Pair<String,String> partitionPathFilePair)

Method Detail

checkCandidatesAgainstFile

public List<String> checkCandidatesAgainstFile(org.apache.hadoop.conf.Configuration configuration,
                                               List<String> candidateRecordKeys,
                                               org.apache.hadoop.fs.Path filePath)
                                        throws HoodieIndexException

Given a list of row keys and one file, return only row keys existing in that file.

Throws:

HoodieIndexException

addKey

public void addKey(String recordKey)

Adds the key for look up.

getLookupResult

public HoodieKeyLookupHandle.KeyLookupResult getLookupResult()

Of all the keys, that were added, return a list of keys that were actually found in the file group.