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https://issues.apache.org/jira/browse/ARROW-11629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17284886#comment-17284886
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Micah Kornfield commented on ARROW-11629:
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So I think there might be two issues:
1. The file might be getting corrupted and the pyarrow reader is not detected
it somehow.
2. There could be something wrong in one of the write code paths (but it seems
simple local round trip works).
> [C++] Writing float32 values makes parquet files not readable for some tools
> ----------------------------------------------------------------------------
>
> Key: ARROW-11629
> URL: https://issues.apache.org/jira/browse/ARROW-11629
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Python
> Affects Versions: 3.0.0
> Reporter: Matthias Rosenthaler
> Priority: Major
> Attachments: image-2021-02-15-15-49-41-908.png, output.csv,
> output.parquet
>
>
> If I try to read the attached csv file with pyarrow, changing the float64
> columns to float32 and export it to parquet, the parquet file gets corrupted.
> It is not readable for apache drill or Parquet.Net any longer.
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