org.apache.drill.exec.expr.fn.impl

Class MurmurHash3

java.lang.Object

org.apache.drill.exec.expr.fn.impl.DrillHash

org.apache.drill.exec.expr.fn.impl.MurmurHash3

public final class MurmurHash3
extends DrillHash

MurmurHash3 was written by Austin Appleby, and is placed in the public domain. See http://smhasher.googlecode.com/svn/trunk/MurmurHash3.cpp MurmurHash3_x64_128 MurmurHash3_x86_32

Constructor Summary

Constructors

Constructor and Description
MurmurHash3()

Method Summary

Modifier and Type	Method and Description
static long	fmix64(long k)
static int	hash32(double val, long seed)
static int	hash32(int start, int end, DrillBuf buffer, int seed)
static long	hash64(double val, long seed)
static long	hash64(long start, long end, DrillBuf buffer, long seed)
static int	murmur3_32(int bStart, int bEnd, DrillBuf buffer, int seed)
static int	murmur3_32(long val, int seed)
static long	murmur3_64(long val, int seed)
static long	murmur3_64(long bStart, long bEnd, DrillBuf buffer, int seed)

Methods inherited from class org.apache.drill.exec.expr.fn.impl.DrillHash

getIntLittleEndian, getLongLittleEndian

Methods inherited from class java.lang.Object

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

Constructor Detail

MurmurHash3

public MurmurHash3()

Method Detail

fmix64

public static final long fmix64(long k)

murmur3_64

public static long murmur3_64(long bStart,
                              long bEnd,
                              DrillBuf buffer,
                              int seed)

murmur3_64

public static long murmur3_64(long val,
                              int seed)

murmur3_32

public static int murmur3_32(int bStart,
                             int bEnd,
                             DrillBuf buffer,
                             int seed)

murmur3_32

public static int murmur3_32(long val,
                             int seed)

hash64

public static long hash64(double val,
                          long seed)

hash64

public static long hash64(long start,
                          long end,
                          DrillBuf buffer,
                          long seed)

hash32

public static int hash32(double val,
                         long seed)

hash32

public static int hash32(int start,
                         int end,
                         DrillBuf buffer,
                         int seed)