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https://issues.apache.org/jira/browse/ARROW-17736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weston Pace resolved ARROW-17736.
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Fix Version/s: 10.0.0
Resolution: Fixed
Issue resolved by pull request 14143
[https://github.com/apache/arrow/pull/14143]
> [C++] Add fallback for shorthand Substrait URIs without scheme
> --------------------------------------------------------------
>
> Key: ARROW-17736
> URL: https://issues.apache.org/jira/browse/ARROW-17736
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Weston Pace
> Assignee: Weston Pace
> Priority: Major
> Labels: pull-request-available
> Fix For: 10.0.0
>
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> At the moment there is no agreed URI base for the standard Substrait
> functions. The Substrait consumer is currently expecting
> {{https://github.com/substrait-io/substrait/blob/main/extensions/FILENAME.YAML}}
> but Isthmus is currently generating {{/FILENAME.YAML}}.
> Although this is a short-term problem I could imagine it popping up again
> from time to time when users are developing their own functions. So, as a
> workaround, I suggest that any URI equal to the empty string or "/" should be
> treated as a "shortcut" and we fall back to name-only matching.
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