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https://issues.apache.org/jira/browse/HIVE-21011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16710287#comment-16710287
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ASF GitHub Bot commented on HIVE-21011:
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GitHub user pudidic opened a pull request:
https://github.com/apache/hive/pull/503
HIVE-21011: Upgrade MurmurHash 2.0 to 3.0 in vectorized map and reduc…
…e operators (Teddy Choi)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/pudidic/hive HIVE-21011
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/hive/pull/503.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #503
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commit 29e19e6ff9992dd0164507521fd2b9cda008a7de
Author: Teddy Choi <pudidic@...>
Date: 2018-12-05T16:22:15Z
HIVE-21011: Upgrade MurmurHash 2.0 to 3.0 in vectorized map and reduce
operators (Teddy Choi)
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> 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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