org.apache.hadoop.hbase.io.hfile

Class CompoundBloomFilterBase

java.lang.Object

org.apache.hadoop.hbase.io.hfile.CompoundBloomFilterBase

All Implemented Interfaces:

BloomFilterBase

Direct Known Subclasses:

CompoundBloomFilter, CompoundBloomFilterWriter

@InterfaceAudience.Private
public class CompoundBloomFilterBase
extends Object
implements BloomFilterBase

Field Summary

Fields

Modifier and Type	Field and Description
protected CellComparator	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.

Constructor Summary

Constructors

Constructor and Description
CompoundBloomFilterBase()

Method Summary

Modifier and Type	Method and Description
long	getByteSize() Returns Size of the bloom, in bytes
long	getKeyCount() Returns The number of keys added to the bloom
long	getMaxKeys() Returns The max number of keys that can be inserted to maintain the desired error rate

Methods inherited from class java.lang.Object

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

Field Detail

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.

See Also:

Constant Field Values

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 CellComparator comparator

Comparator used to compare Bloom filter keys

Constructor Detail

CompoundBloomFilterBase

public CompoundBloomFilterBase()

Method Detail

getMaxKeys

public long getMaxKeys()

Description copied from interface: BloomFilterBase

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

Specified by:

getMaxKeys in interface BloomFilterBase

getKeyCount

public long getKeyCount()

Description copied from interface: BloomFilterBase

Returns The number of keys added to the bloom

Specified by:

getKeyCount in interface BloomFilterBase

getByteSize

public long getByteSize()

Description copied from interface: BloomFilterBase

Returns Size of the bloom, in bytes

Specified by:

getByteSize in interface BloomFilterBase