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https://issues.apache.org/jira/browse/ARROW-18344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17634987#comment-17634987
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Rok Mihevc commented on ARROW-18344:
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Do you think it would be ok to start by leaving the sortedness responsibility
to the user?
> [C++] Use input pre-sortedness to create sorted table with ConcatenateTables
> ----------------------------------------------------------------------------
>
> Key: ARROW-18344
> URL: https://issues.apache.org/jira/browse/ARROW-18344
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Rok Mihevc
> Priority: Major
> Labels: kernel
>
> In case of concatenating large sorted tables (e.g. sorted timeseries data)
> the resulting table is no longer sorted. However the input sortedness can be
> used to significantly speed up post concatenation sorting. A potential API
> could be to add ConcatenateTablesOptions.inputs_sorted and implement the
> logic in ConcatenateTables.
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