[ARROW-7208] [Python] Passing directory to ParquetFile class gives confusing error message

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.15.1
• Fix Version/s: 1.0.0
• Component/s: Python
• Labels: parquet pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/23505
• Assignee: Wes McKinney
• Reporter: Roelant Stegmann
• Created: 19/Nov/19 16:16
• Updated: 11/Jan/23 07:52
• Resolved: 13/Jul/20 03:31

Description

Somehow have the same errors. We are working with pyarrow 0.15.1, trying to access a folder of `parquet` files generated with Amazon Athena.

```python
table2 = pq.read_table('C:/Data/test-parquet')
```

works fine in contrast to

```python
parquet_file = pq.ParquetFile('C:/Data/test-parquet')

1. parquet_file.read_row_group(0)
   ```

which raises

`ArrowIOError: Failed to open local file 'C:/Data/test-parquet', error: Access is denied.`

Issue Links

• links to: GitHub Pull Request #7722