[
https://issues.apache.org/jira/browse/ARROW-12091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Antoine Pitrou updated ARROW-12091:
-----------------------------------
Fix Version/s: 5.0.0
> [C++] Allow AddCallback/Then to take in an optional Executor.
> -------------------------------------------------------------
>
> Key: ARROW-12091
> URL: https://issues.apache.org/jira/browse/ARROW-12091
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Weston Pace
> Priority: Major
> Fix For: 5.0.0
>
>
> Right now `Executor::Transfer` isn't perfectly reliable since callbacks added
> after the future has been completed will be run synchronously and so the
> thread task would be spawned at the wrong time. With this feature
> `Executor::Transfer` could be fixed.
> This would need to be added to both `Then` and `AddCallback`.
> Ideally the methods would detect if the current thread is already on the
> desired executor and do nothing in that situation. Spinning up unnecessary
> thread tasks would do more harm than good.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
