org.apache.paimon.fileindex.bloomfilter

Class BloomFilterFileIndex

java.lang.Object

org.apache.paimon.fileindex.bloomfilter.BloomFilterFileIndex

All Implemented Interfaces:

FileIndexer

public class BloomFilterFileIndex
extends Object
implements FileIndexer

Bloom filter for file index.

Note: This class use BloomFilter64 as a base filter. Store the num hash function (one integer) and bit set bytes only. Use HashFunction to hash the objects, which hash bytes type(like varchar, binary, etc.) using xx hash, hash numeric type by specified number hash(see http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm).

Field Summary

Fields inherited from interface org.apache.paimon.fileindex.FileIndexer

LOG

Constructor Summary

Constructors

Constructor and Description
BloomFilterFileIndex(DataType dataType, Options options)

Method Summary

Modifier and Type	Method and Description
FileIndexReader	createReader(SeekableInputStream inputStream, int start, int length)
FileIndexWriter	createWriter()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.paimon.fileindex.FileIndexer

create

Constructor Detail

BloomFilterFileIndex

public BloomFilterFileIndex(DataType dataType,
                            Options options)

Method Detail

createWriter

public FileIndexWriter createWriter()

Specified by:

createWriter in interface FileIndexer

createReader

public FileIndexReader createReader(SeekableInputStream inputStream,
                                    int start,
                                    int length)

Specified by:

createReader in interface FileIndexer