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https://issues.apache.org/jira/browse/ARROW-14182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weston Pace resolved ARROW-14182.
---------------------------------
Resolution: Fixed
Issue resolved by pull request 13493
[https://github.com/apache/arrow/pull/13493]
> [C++][Compute] Hash Join performance improvement
> ------------------------------------------------
>
> Key: ARROW-14182
> URL: https://issues.apache.org/jira/browse/ARROW-14182
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 6.0.0
> Reporter: Michal Nowakiewicz
> Assignee: Michal Nowakiewicz
> Priority: Major
> Labels: pull-request-available, query-engine
> Fix For: 9.0.0
>
> Time Spent: 6.5h
> Remaining Estimate: 0h
>
> Add micro-benchmarks for hash join exec node.
> Write a new implementation of the interface HashJoinImpl making sure that it
> is efficient for all types of join. Current implementation, based on
> unordered map, trades performance for a simpler code and is likely not as
> fast as it could be.
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