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https://issues.apache.org/jira/browse/ARROW-16872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou resolved ARROW-16872.
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Resolution: Fixed
Issue resolved by pull request 13437
[https://github.com/apache/arrow/pull/13437]
> [Python] open_csv throws ArrowInvalid if csv does not end with a new line and
> is above 16384 lines
> --------------------------------------------------------------------------------------------------
>
> Key: ARROW-16872
> URL: https://issues.apache.org/jira/browse/ARROW-16872
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 7.0.0, 8.0.0
> Reporter: Frederik Fabritius
> Assignee: Yibo Cai
> Priority: Major
> Labels: csvparser, open_csv, pull-request-available
> Fix For: 9.0.0
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> `pyarrow.csv.open_csv` throws ArrowInvalid if csv does not end with a new
> line and is above 16384 lines. Tested with both pyarrow 7.0.0 and 8.0.0.
> Error seen both in production app and on developer laptop.
>
> Here's a minimal case for reproducing the issue:
> ```python
> import pyarrow as pa
> import pyarrow.csv
> from io import BytesIO
> for _ in pa.csv.open_csv(BytesIO('\n'.join(['review_id,filter_outcome'] +
> ['62593aaec7628b203bad4c6e,fabrication']*16385).encode())): pass
> ```
>
> Error is thrown:
> ArrowInvalid: CSV parse error: Expected 2 columns, got 1:
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