Encounter a bug. Fixed it by changing field name to item. But why ?

Internal error: Failed due to a difference in schemas, original schema: DFSchema { inner: Schema { fields: [Field { name: "map_keys(map(make_array(Int64(1),Int64(2),Int64(3)),make_array(Int64(1),Int64(2),Int64(3))))", data_type: List(Field { name: "keys", data_type: Int64, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }), nullable: true, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} }, field_qualifiers: [None], functional_dependencies: FunctionalDependencies { deps: [] } }, new schema: DFSchema { inner: Schema { fields: [Field { name: "map_keys(map(make_array(Int64(1),Int64(2),Int64(3)),make_array(Int64(1),Int64(2),Int64(3))))", data_type: List(Field { name: "item", data_type: Int64, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }), nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} }, field_qualifiers: [None], functional_dependencies: FunctionalDependencies { deps: [] } }.

Encounter a bug. Fixed it by changing field name to item. But why ?

Internal error: Failed due to a difference in schemas, original schema: DFSchema { inner: Schema { fields: [Field { name: "map_keys(map(make_array(Int64(1),Int64(2),Int64(3)),make_array(Int64(1),Int64(2),Int64(3))))", data_type: List(Field { name: "keys", data_type: Int64, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }), nullable: true, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} }, field_qualifiers: [None], functional_dependencies: FunctionalDependencies { deps: [] } }, new schema: DFSchema { inner: Schema { fields: [Field { name: "map_keys(map(make_array(Int64(1),Int64(2),Int64(3)),make_array(Int64(1),Int64(2),Int64(3))))", data_type: List(Field { name: "item", data_type: Int64, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }), nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} }, field_qualifiers: [None], functional_dependencies: FunctionalDependencies { deps: [] } }.

I think it is caused by the pre-defined field name in make_array.

@dharanad could you add some doc for this function?

Sorry for the mess, i thought since the change was similar for both map_keys && map_values why not club it.

After fixing CI, it is ready to go

After fixing CI, it is ready to go

@Weijun-H Any idea, how do i fix the docs formatting issue

After fixing CI, it is ready to go

@Weijun-H Any idea, how do i fix the docs formatting issue

You could check here https://datafusion.apache.org/contributor-guide/howtos.html#how-to-format-md-document

ship it!

Thanks @dharanad contribution, and @Blizzara and @jayzhan211 for reviewing.

Thank You @Weijun-H @jayzhan211 @Blizzara