rustyconover opened a new issue, #44183:
URL: https://github.com/apache/arrow/issues/44183
### Describe the bug, including details regarding any error messages,
version, and platform.
When attempting to use a `RunEndEncoded` array with either a `struct` or a
`list`, an exception is raised indicating that no matching kernel is available.
#### Steps to Reproduce:
Please run the following example code to reproduce the issue:
```python
import pyarrow as pa
for data_type, values in [
[pa.struct([pa.field("age", pa.int32())]), {"age": 20}],
[pa.list_(pa.int32()), [20]]
]:
try:
schema = pa.schema([pa.field("data", pa.run_end_encoded(pa.int16(),
data_type))])
data = [
{"data": values},
]
table = pa.Table.from_pylist(data, schema=schema)
except Exception as e:
print(f"Failed with {data_type} {e}")
```
#### Observed Output:
```
Failed with struct<age: int32> Function 'run_end_encode' has no kernel
matching input types (struct<age: int32>)
Failed with list<item: int32> Function 'run_end_encode' has no kernel
matching input types (list<item: int32>)
```
#### Expected Behavior:
The code should correctly create a `RunEndEncoded` array using both `struct`
and `list` types without raising exceptions.
#### Environment:
- PyArrow version: 18.0.0.dev
- Python version: 3.12.5
- Platform: Mac OS X
#### Additional Context:
The failure seems to suggest that the `run_end_encode` function does not
currently support `struct` or `list` types, but it's not explicitly documented
whether this is intentional or an oversight.
### Component(s)
Python
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