andygrove opened a new issue, #2505:
URL: https://github.com/apache/arrow-datafusion/issues/2505
**Describe the bug**
We have a hard-coded `distinct = false` parameter in
`ballista/rust/core/src/serde/physical_plan/mod.rs`.
``` rust
Ok(create_aggregate_expr(
&aggr_function.into(),
false, // <-- hard-coded "distinct"
input_phy_expr.as_slice(),
&physical_schema,
name.to_string(),
)?)
```
**To Reproduce**
Try running a `COUNT(DISTINCT expr)` in Ballista
**Expected behavior**
We need to include the distinct flag in the protobuf for aggregate queries
and implement the appropriate serde code.
**Additional context**
None
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