org.apache.hadoop.hbase.util

类 CompoundBloomFilterBase

java.lang.Object

org.apache.hadoop.hbase.util.CompoundBloomFilterBase

所有已实现的接口:

BloomFilterBase

直接已知子类:

CompoundBloomFilter, CompoundBloomFilterWriter

@InterfaceAudience.Private
public class CompoundBloomFilterBase
extends Object
implements BloomFilterBase

字段概要

字段

限定符和类型	字段和说明
protected KeyValue.KVComparator	comparator Comparator used to compare Bloom filter keys
protected float	errorRate Target error rate for configuring the filter and for information
protected int	hashType Hash function type to use, as defined in Hash
protected int	numChunks At read time, the total number of chunks.
protected long	totalByteSize
protected long	totalKeyCount The total number of keys in all chunks
protected long	totalMaxKeys
static int	VERSION The Bloom filter version.

构造器概要

构造器

构造器和说明
CompoundBloomFilterBase()

方法概要

方法

限定符和类型	方法和说明
byte[]	createBloomKey(byte[] row, int roffset, int rlength, byte[] qualifier, int qoffset, int qlength) Prepare an ordered pair of row and qualifier to be compared using KeyValue.KeyComparator.
long	getByteSize()
KeyValue.KVComparator	getComparator()
long	getKeyCount()
long	getMaxKeys()

从类继承的方法 java.lang.Object

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

字段详细资料

numChunks

protected int numChunks

At read time, the total number of chunks. At write time, the number of chunks created so far. The first chunk has an ID of 0, and the current chunk has the ID of numChunks - 1.

VERSION

public static final int VERSION

The Bloom filter version. There used to be a DynamicByteBloomFilter which had version 2.

另请参阅:

常量字段值

errorRate

protected float errorRate

Target error rate for configuring the filter and for information

totalKeyCount

protected long totalKeyCount

The total number of keys in all chunks

totalByteSize

protected long totalByteSize

totalMaxKeys

protected long totalMaxKeys

hashType

protected int hashType

Hash function type to use, as defined in Hash

comparator

protected KeyValue.KVComparator comparator

Comparator used to compare Bloom filter keys

构造器详细资料

CompoundBloomFilterBase

public CompoundBloomFilterBase()

方法详细资料

getMaxKeys

public long getMaxKeys()

指定者:

getMaxKeys 在接口中 BloomFilterBase

返回:

The max number of keys that can be inserted to maintain the desired error rate

getKeyCount

public long getKeyCount()

指定者:

getKeyCount 在接口中 BloomFilterBase

返回:

The number of keys added to the bloom

getByteSize

public long getByteSize()

指定者:

getByteSize 在接口中 BloomFilterBase

返回:

Size of the bloom, in bytes

createBloomKey

public byte[] createBloomKey(byte[] row,
                    int roffset,
                    int rlength,
                    byte[] qualifier,
                    int qoffset,
                    int qlength)

Prepare an ordered pair of row and qualifier to be compared using KeyValue.KeyComparator. This is only used for row-column Bloom filters.

指定者:

createBloomKey 在接口中 BloomFilterBase

getComparator

public KeyValue.KVComparator getComparator()

指定者:

getComparator 在接口中 BloomFilterBase

返回:

Bloom key comparator