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https://issues.apache.org/jira/browse/ARROW-13338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17382274#comment-17382274
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Weston Pace commented on ARROW-13338:
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I'd be on board with any of the following:
1. Leave it how it is for 5.0.0, async is an opt-in feature
2. Set async to default, leave sync alone, async is an opt-out feature
3. Set async to default, deprecate sync, async is an opt-out but strongly
recommended feature
If I had to vote I'd go for 1 or 2 and probably 2.
> [C++][Dataset] Make async Scanner the default
> ---------------------------------------------
>
> Key: ARROW-13338
> URL: https://issues.apache.org/jira/browse/ARROW-13338
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Ben Kietzman
> Priority: Major
> Labels: dataset
>
> The synchronous Scanner is not integrated with ExecPlans and doesn't offer
> better performance in any case than the asynchronous scanner, so we should
> start migrating away from the extraneous code path so it can be deprecated
> and then deleted.
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