mcrumiller opened a new issue, #39763:
URL: https://github.com/apache/arrow/issues/39763
### Describe the bug, including details regarding any error messages,
version, and platform.
This may be expected behavior, but when hive-partioning a dataset, if a
float column is used as the parition key and the values are all integer-like
(e.g. `x.0`) then the output path is `value=x` instead of `value=x.0` and
cannot be distinguished from an integer column when subsequently re-read.
### Reproducible Example
```python
from pathlib import Path
import pyarrow as pa
import pyarrow.parquet as pq
table_out = pa.table(
{
"float": [1.0, 2.0, 3.0],
"int": [1, 2, 3],
}
)
pq.write_to_dataset(
table_out ,
root_path=Path() / "test_parquet",
partition_cols=["float"],
)
```
### Output:
```shell
$ ls test_parquet
'float=1' 'float=2' 'float=3'
```
### Component(s)
Python
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