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https://issues.apache.org/jira/browse/ARROW-8991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17125264#comment-17125264
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Wes McKinney edited comment on ARROW-8991 at 6/3/20, 7:42 PM:
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It's needed for implementing hash aggregations (and any other grouping-type
algorithm). No need to rearrange priorities, just wanted to mention.
was (Author: wesmckinn):
It's needed for implementing hash aggregations. No need to rearrange
priorities, just wanted to mention.
> [C++][Compute] Add scalar_hash function
> ---------------------------------------
>
> Key: ARROW-8991
> URL: https://issues.apache.org/jira/browse/ARROW-8991
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
> Fix For: 1.0.0
>
>
> The purpose of this function is to compute 32- or 64-bit hash values for each
> cell in an Array. Hashes for nested types can be computed recursively by
> combining the hash values of their children
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