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https://issues.apache.org/jira/browse/ARROW-12496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17326608#comment-17326608
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David Li edited comment on ARROW-12496 at 4/21/21, 3:13 PM:
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~It turns out AsyncScanner::ScanBatches(Unordered) doesn't report errors; it
just ends the iterator early.~ That's just because the test Fragment classes
don't properly override ScanBatchesAsync.
was (Author: lidavidm):
It turns out AsyncScanner::ScanBatches(Unordered) doesn't report errors; it
just ends the iterator early.
> [C++][Dataset] Ensure Scanner tests fully cover async
> -----------------------------------------------------
>
> Key: ARROW-12496
> URL: https://issues.apache.org/jira/browse/ARROW-12496
> Project: Apache Arrow
> Issue Type: Improvement
> Reporter: David Li
> Assignee: David Li
> Priority: Major
> Labels: dataset, datasets
>
> Some of the tests for scanners don't fully cover the async scanner as they
> scan a single fragment, which isn't supported by AsyncScanner.
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