yongkyunlee opened a new issue, #8253:
URL: https://github.com/apache/arrow-rs/issues/8253
**Describe the bug**
When you try to decode data with schema like
```json
{
"name": "map_of_strings",
"type": {
"type": "map",
"values": "string"
},
"doc": "Map with string values"
}
```
Decoder fails with the following error
```
InvalidArgumentError("column types must match schema types, expected
Map(Field { name: \"entries\", data_type: Struct([Field { name: \"key\",
data_type: Utf8, nullable: false, dict_id: 0, dict_is_ordered: false, metadata:
{} }, Field { name: \"value\", data_type: Utf8, nullable: false, dict_id: 0,
dict_is_ordered: false, metadata: {} }]), nullable: false, dict_id: 0,
dict_is_ordered: false, metadata: {} }, false) but found Map(Field { name:
\"entries\", data_type: Struct([Field { name: \"key\", data_type: Utf8,
nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }, Field {
name: \"value\", data_type: Utf8, nullable: true, dict_id: 0, dict_is_ordered:
false, metadata: {} }]), nullable: false, dict_id: 0, dict_is_ordered: false,
metadata: {} }, false) at column index 0")
```
**To Reproduce**
You can reproduce with a simple unit test with the schema above.
**Additional context**
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