milenkovicm opened a new issue, #17292:
URL: https://github.com/apache/datafusion/issues/17292
### Is your feature request related to a problem or challenge?
I'd like to run sort merge join in ballista but at the moment physical plan
serde will fail
Minimum reproducer:
```rust
#[tokio::main]
async fn main() -> datafusion::error::Result<()> {
let ctx = datafusion::prelude::SessionContext::new();
ctx.register_parquet("t0", "data/parquet/", Default::default())
.await?;
ctx.register_parquet("t1", "data/parquet/", Default::default())
.await?;
ctx.sql("SET datafusion.optimizer.prefer_hash_join = false")
.await?
.show()
.await?;
let plan = ctx
.sql("select t0.* from t0 join t1 on t0.id = t1.id")
.await?
.create_physical_plan()
.await?;
// will fail with
// Unsupported plan and extension codec failed with [This feature is not
implemented: PhysicalExtensionCodec is not provided]. Plan: SortMergeJoinExec
...
datafusion_proto::bytes::physical_plan_to_bytes(plan).unwrap();
Ok(())
}
```
will fail with unsupported serde for `SortMergeJoinExec`
### Describe the solution you'd like
Provide a proto support for `SortMergeJoinExec` as the first step of to
support SortMergeJoin
### Describe alternatives you've considered
_No response_
### Additional context
_No response_
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