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https://issues.apache.org/jira/browse/HIVE-20892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16680441#comment-16680441
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Prasanth Jayachandran edited comment on HIVE-20892 at 11/8/18 9:40 PM:
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[https://github.com/prasanthj/hasher] has perf comparison for some of the
non-cryptographic hashing algorithms.
Murmur2 is slightly better in terms of perf than Murmur3 but for this reason
[https://github.com/apache/hive/blob/master/storage-api/src/java/org/apache/hive/common/util/BloomFilter.java#L37-L40]
Murmur3 is chosen for bloomfilter and HLL in Hive.
was (Author: prasanth_j):
[https://github.com/prasanthj/hasher]
Murmur2 is slightly better in terms of perf than Murmur3 but for this reason
[https://github.com/apache/hive/blob/master/storage-api/src/java/org/apache/hive/common/util/BloomFilter.java#L37-L40]
Murmur3 is chosen for bloomfilter and HLL in Hive.
> Benchmark XXhash for 64 bit hashing function instead of Murmum hash
> -------------------------------------------------------------------
>
> Key: HIVE-20892
> URL: https://issues.apache.org/jira/browse/HIVE-20892
> Project: Hive
> Issue Type: Sub-task
> Reporter: slim bouguerra
> Assignee: slim bouguerra
> Priority: Major
>
> https://cyan4973.github.io/xxHash/
> FYI this is used by lot of other MPP systems ...
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