Package org.apache.spark.util.sketch

Enum Class BloomFilter.Version

Object

Enum<BloomFilter.Version>

org.apache.spark.util.sketch.BloomFilter.Version

All Implemented Interfaces:

Serializable, Comparable<BloomFilter.Version>, Constable

Enclosing class:

BloomFilter

public static enum BloomFilter.Version
extends Enum<BloomFilter.Version>

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
V1	BloomFilter binary format version 1.
V2	BloomFilter binary format version 2.

Method Summary

Modifier and Type	Method	Description
static BloomFilter.Version	valueOf(String name)	Returns the enum constant of this class with the specified name.
static BloomFilter.Version[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, describeConstable, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

V1

public static final BloomFilter.Version V1

BloomFilter binary format version 1. All values written in big-endian order:

• Version number, always 1 (32 bit)
• Number of hash functions (32 bit)
• Total number of words of the underlying bit array (32 bit)
• The words/longs (numWords * 64 bit)

V2

public static final BloomFilter.Version V2

BloomFilter binary format version 2. Fixes the int32 truncation issue with V1 indexes, but by changing the bit pattern, it will become incompatible with V1 serializations. All values written in big-endian order:

• Version number, always 2 (32 bit)
• Number of hash functions (32 bit)
• Integer seed to initialize hash functions (32 bit)
• Total number of words of the underlying bit array (32 bit)
• The words/longs (numWords * 64 bit)

Method Details

values

public static BloomFilter.Version[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static BloomFilter.Version valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null