mapleFU opened a new issue, #10004:
URL: https://github.com/apache/arrow-rs/issues/10004
**Describe the bug**
```
impl<OffsetSize: OffsetSizeTrait> GenericListArray<OffsetSize> {
/// The data type constructor of list array.
/// The input is the schema of the child array and
/// the output is the [`DataType`], List or LargeList.
pub const DATA_TYPE_CONSTRUCTOR: fn(FieldRef) -> DataType = if
OffsetSize::IS_LARGE {
DataType::LargeList
} else {
DataType::List
};
```
`DATA_TYPE_CONSTRUCTOR` would be used here, however, here it will lost the
metadata within field.
**To Reproduce**
cast the way below:
```
src FixedSizeList(Field { name: "element", data_type: Float32, nullable:
true }, 1024)
target List(Field { name: "element", data_type:
Float32, nullable: true, metadata: {"PARQUET:field_id": "89"} })
```
Target would be:
```
target List(Field { name: "element", data_type:
Float32, nullable: true} )
```
**Expected behavior**
```
target List(Field { name: "element", data_type:
Float32, nullable: true, metadata: {"PARQUET:field_id": "89"} })
```
**Additional context**
No
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