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https://issues.apache.org/jira/browse/ARROW-17204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kouhei Sutou updated ARROW-17204:
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Fix Version/s: 11.0.0
(was: 10.0.0)
> [C++][Compute] Switch new (Swiss) hash join to use 64-bit hash
> --------------------------------------------------------------
>
> Key: ARROW-17204
> URL: https://issues.apache.org/jira/browse/ARROW-17204
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 10.0.0
> Reporter: Michal Nowakiewicz
> Priority: Major
> Labels: query-engine
> Fix For: 11.0.0
>
>
> Currently SwissJoin uses 32-bit hash. This means that it will work well only
> up to around 10M rows in the hash table. Beyond that the hash collisions will
> keep growing very fast making the hash join impractical to use from
> performance perspective. Switch to 64-bit hash.
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