[ARROW-12487] [C++][Dataset] ScanBatches() hangs if there's an error during scanning

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.0
• Component/s: C++
• Labels: dataset datasets pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28252
• Assignee: David Li
• Reporter: David Li
• Created: 20/Apr/21 19:58
• Updated: 11/Jan/23 08:26
• Resolved: 21/Apr/21 02:59

Description

Errors during scanning aren't properly reported, causing the iterator to hang forever.

This affects ScanBatches() and anything built on top of it (Python to_batches, TakeRows, etc)

Verified on the 4.0.0 RC

Issue Links

• links to: GitHub Pull Request #10115