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https://issues.apache.org/jira/browse/ARROW-16590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-16590:
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    Labels: pull-request-available  (was: )

> [C++] Consolidate files dealing with row-major storage, add some helper 
> methods
> -------------------------------------------------------------------------------
>
>                 Key: ARROW-16590
>                 URL: https://issues.apache.org/jira/browse/ARROW-16590
>             Project: Apache Arrow
>          Issue Type: Sub-task
>          Components: C++
>            Reporter: Weston Pace
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> We've built up a number of utilities that are based around a row-major 
> encoding.  Understanding these utilities requires a pretty in-depth 
> understanding of this encoding format.
> In addition, as we start to have external work done on exec nodes I think 
> some of these utilities will be useful to eventually expose externally.
> This JIRA attempts to address both goals purely through renaming & moving.  
> It does not entirely accomplish the second as that would require converting 
> some types to PIMPL.  However, it does establish a pretty solid groundwork 
> should we decide to later do that.
> In addition, this adds tests to the external surface of these APIs, something 
> that had only previously been tested indirectly via the hash join.  
> Eventually I suspect we will also want benchmarks around these utilities but 
> I will save that for a future PR.



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