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https://issues.apache.org/jira/browse/ARROW-11853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou updated ARROW-11853:
-----------------------------------
Priority: Minor (was: Major)
> [C++] CSV streaming reader doesn't handle cancellation correctly
> ----------------------------------------------------------------
>
> Key: ARROW-11853
> URL: https://issues.apache.org/jira/browse/ARROW-11853
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Antoine Pitrou
> Priority: Minor
>
> When cancellation (e.g. from a signal) happens, the CSV streaming reader will
> just hang.
> It seems the problem is due to the fact that {{TaskGroup::Append}} will
> short-circuit if a cancellation occurred, but {{csv::ColumnDecoder}} doesn't
> expect errors from {{TaskGroup}} (instead, it uses futures internally to
> communicate those errors).
> Incidentally, {{csv::StreamingReader}} never calls {{TaskGroup::Finish}}.
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