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https://issues.apache.org/jira/browse/HIVE-21011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16712216#comment-16712216
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Gopal V commented on HIVE-21011:
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LGTM - +1
The Uniform RS hash function isn't required to be backwards compatible & the
new FIXED bucketing_version=2 is also Murmur3.
> Upgrade MurmurHash 2.0 to 3.0 in vectorized map and reduce operators
> --------------------------------------------------------------------
>
> Key: HIVE-21011
> URL: https://issues.apache.org/jira/browse/HIVE-21011
> Project: Hive
> Issue Type: Improvement
> Reporter: Teddy Choi
> Assignee: Teddy Choi
> Priority: Major
> Labels: pull-request-available
>
> HIVE-20873 improved map join performance by using MurmurHash 3.0. However,
> there's more operators that can use it. VectorMapJoinCommonOperator and
> VectorReduceSinkUniformHashOperator use MurmurHash 2.0, so it can be upgraded
> to MurmurHash 3.0.
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