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https://issues.apache.org/jira/browse/ARROW-8990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17448139#comment-17448139
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Antoine Pitrou commented on ARROW-8990:
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Do we want to keep this open? [~bkietz] [~michalno]
> [C++] Benchmark hash table against thirdparty options, possibly vendor a
> thirdparty hash table library
> ------------------------------------------------------------------------------------------------------
>
> Key: ARROW-8990
> URL: https://issues.apache.org/jira/browse/ARROW-8990
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
>
> While we have our own hash table implementation, it would be worthwhile to
> set up some benchmarks so that we can compare against std::unordered_map and
> some other thirdparty libraries for hash tables to know whether we should
> possibly use a thirdparty library. See e.g.
> https://tessil.github.io/2016/08/29/benchmark-hopscotch-map.html
> Libraries to consider:
> * https://github.com/sparsehash/sparsehash
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