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https://issues.apache.org/jira/browse/HBASE-875?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrzej Bialecki updated HBASE-875:
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Attachment: murmur.patch
This patch adds MurmurHash as an option (used by default) alongside with
JenkinsHash, and provides for backwards-compatibility with data created before
this patch.
> Use MurmurHash instead of JenkinsHash
> -------------------------------------
>
> Key: HBASE-875
> URL: https://issues.apache.org/jira/browse/HBASE-875
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: util
> Affects Versions: 0.19.0
> Reporter: Andrzej Bialecki
> Attachments: murmur.patch
>
>
> I recently ported the MurmurHash (http://murmurhash.googlepages.com/) to
> Java, and according to my tests it's roughly 5 times faster than the current
> version of JenkinsHash in the trunk/ . According to the author (and other
> analysts at comp.sci.crypt) this hash has an excellent avalanche behavior,
> and low collision rate. I propose to either replace the JenkinsHash or add
> this hash as an option to be used in BloomFilter-s and related classes.
> If your opinion is positive, I'll prepare a patch. The Java implementation of
> the hash can be found here: http://www.getopt.org/murmur/MurmurHash.java
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