alamb opened a new issue, #15157:
URL: https://github.com/apache/datafusion/issues/15157
### Describe the bug
I am not sure what the `json` feature is supposed to do in datafusion-proto
but it is broken
### To Reproduce
```shell
cargo check --profile ci --all-targets --no-default-features -p
datafusion-proto --features=json
```
Results in pages of errors like this
```
error[E0277]: the trait bound `datafusion_proto_common::Schema: Serialize`
is not satisfied
--> datafusion/proto/src/generated/pbjson.rs:159:55
|
159 | struct_ser.serialize_field("inputSchema", v)?;
| --------------- ^ the trait
`Serialize` is not implemented for `datafusion_proto_common::Schema`
| |
| required by a bound introduced by this call
|
= note: for local types consider adding `#[derive(serde::Serialize)]`
to your `datafusion_proto_common::Schema` type
= note: for types from other crates check whether the crate offers a
`serde` feature flag
= help: the following other types implement trait `Serialize`:
&'a T
&'a mut T
()
(T,)
(T0, T1)
(T0, T1, T2)
(T0, T1, T2, T3)
(T0, T1, T2, T3, T4)
and 303 others
note: required by a bound in `serde::ser::SerializeStruct::serialize_field`
-->
/usr/local/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/serde-1.0.218/src/ser/mod.rs:18[66](https://github.com/apache/datafusion/actions/runs/13788882508/job/38563713616?pr=15156#step:6:67):21
|
1864 | fn serialize_field<T>(&mut self, key: &'static str, value: &T) ->
Result<(), Self::Error>
| --------------- required by a bound in this associated function
1865 | where
1866 | T: ?Sized + Serialize;
| ^^^^^^^^^ required by this bound in
`SerializeStruct::serialize_field`
error[E0277]: the trait bound `datafusion_proto_common::Schema:
Deserialize<'_>` is not satisfied
--> datafusion/proto/src/generated/pbjson.rs:320:51
|
320 | ... input_schema__ = map_.next_value()?;
| ^^^^^^^^^^ the trait
`Deserialize<'_>` is not implemented for `datafusion_proto_common::Schema`
|
= note: for local types consider adding `#[derive(serde::Deserialize)]`
to your `datafusion_proto_common::Schema` type
= note: for types from other crates check whether the crate offers a
`serde` feature flag
= help: the following other types implement trait `Deserialize<'de>`:
&'a [u8]
&'a std::path::Path
&'a str
()
(T,)
(T0, T1)
(T0, T1, T2)
(T0, T1, T2, T3)
and
4[80](https://github.com/apache/datafusion/actions/runs/13788882508/job/38563713616?pr=15156#step:6:81)
others
= note: required for
`std::option::Option<datafusion_proto_common::Schema>` to implement
`Deserialize<'de>`
note: required by a bound in `next_value`
```
See more here
https://github.com/apache/datafusion/actions/runs/13788882508/job/38563713616?pr=15156
### Expected behavior
I expect the feature to work, or to be removed
### Additional context
Found while working on
- https://github.com/apache/datafusion/issues/15155
- https://github.com/apache/datafusion/pull/15156
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