MurmurHash 3.0
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Key: MAHOUT-862
URL: https://issues.apache.org/jira/browse/MAHOUT-862
Project: Mahout
Issue Type: Improvement
Reporter: Grant Ingersoll
Assignee: Grant Ingersoll
Priority: Minor
Yonik has ported an implementation of MurmurHash 3.0 and put it in the public
domain: http://www.lucidimagination.com/blog/2011/09/15/murmurhash3-for-java/
It's a port of https://sites.google.com/site/murmurhash/ which says:
{quote}
(I reserve the right to tweak the constants after people have had a chance to
bang on it). Murmur3 has better performance than MurmurHash2, no repetition
flaw, comes in 32/64/128-bit versions for both x86 and x64 platforms, and the
128-bit x64 version is blazing fast - over 5 gigabytes per second on my 3
gigahertz Core 2.
In addition, the library of test code that I use to test MurmurHash (called
SMHasher) has been released - it's still rough (and will only compile under
VC++ at the moment), but it contains everything needed to verify hash functions
of arbitrary output bit-lengths.
Murmur3 and all future versions will be hosted on Google Code here -
http://code.google.com/p/smhasher/ - you can access the codebase via the
'Source' tab at the top.
{quote}
See also http://code.google.com/p/smhasher/
We should add support for it and hook into MinHash
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