MurmurHash (Apache HBase 1.2.12 API)

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java.lang.Object
- org.apache.hadoop.hbase.util.Hash
- - org.apache.hadoop.hbase.util.MurmurHash

```
@InterfaceAudience.Private
@InterfaceStability.Stable
public class MurmurHash
extends Hash
```
This is a very fast, non-cryptographic hash suitable for general hash-based lookup. See http://murmurhash.googlepages.com/ for more details.
The C version of MurmurHash 2.0 found at that site was ported to Java by Andrzej Bialecki (ab at getopt org).

Field Summary

Fields
Modifier and Type Field and Description

private static MurmurHash _instance
- Fields inherited from class org.apache.hadoop.hbase.util.Hash
  INVALID_HASH, JENKINS_HASH, MURMUR_HASH, MURMUR_HASH3

Constructor Summary

Constructors
Constructor and Description

MurmurHash()

Method Summary

Methods
Modifier and Type	Method and Description
`static Hash`	`getInstance()`
`int`	`hash(byte[] data, int offset, int length, int seed)` Calculate a hash using bytes from `offset` to `offset + length`, and the provided seed value.

Methods inherited from class org.apache.hadoop.hbase.util.Hash
getHashType, getInstance, getInstance, hash, hash, hash, parseHashType

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - _instance
```
private static MurmurHash _instance
```
- Constructor Detail
  - MurmurHash
```
public MurmurHash()
```
- Method Detail
  - getInstance
```
public static Hash getInstance()
```
  - hash
```
public int hash(byte[] data,
       int offset,
       int length,
       int seed)
```
    Description copied from class: Hash
    
    Calculate a hash using bytes from offset to offset + length, and the provided seed value.
    
    Specified by:
    
    hash in class Hash
    
    Parameters:
    data - input bytes
    offset - the offset into the array to start consideration
    length - length of the valid bytes after offset to consider
    seed - seed value
    
    Returns:
    hash value

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