org.apache.hudi.common.util.hash

Class HashID

java.lang.Object

org.apache.hudi.common.util.hash.HashID

All Implemented Interfaces:

Serializable

public class HashID
extends Object
implements Serializable

A stateless Hash class which generates ID for the desired bit count.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HashID.Size Represents HashID size in bits.

Constructor Summary

Constructors

Constructor and Description
HashID()

Method Summary

Modifier and Type	Method and Description
static int	getXXHash32(byte[] message, int hashSeed)
static int	getXXHash32(String message, int hashSeed)
static byte[]	hash(byte[] messageBytes, HashID.Size bits) Get the hash value for a byte array and for the desired @HashID.Size.
static byte[]	hash(String message, HashID.Size bits) Get the hash value for a string message and for the desired @HashID.Size.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashID

public HashID()

Method Detail

hash

public static byte[] hash(String message,
                          HashID.Size bits)

Get the hash value for a string message and for the desired @HashID.Size.

Parameters:

message - - String message to get the hash value for

bits - - @HashID.Size of the hash value

Returns:

Hash value for the message as byte array

hash

public static byte[] hash(byte[] messageBytes,
                          HashID.Size bits)

Get the hash value for a byte array and for the desired @HashID.Size.

Parameters:

messageBytes - - Byte array message to get the hash value for

bits - - @HashID.Size of the hash value

Returns:

Hash value for the message as byte array

getXXHash32

public static int getXXHash32(String message,
                              int hashSeed)

getXXHash32

public static int getXXHash32(byte[] message,
                              int hashSeed)