shehabgamin commented on issue #14008:
URL: https://github.com/apache/datafusion/issues/14008#issuecomment-2629314116
Another regression is that implementing the `is_nullable` function in the
`ScalarUDFImpl` trait no longer works. For example:
```
impl ScalarUDFImpl for SparkArray {
...
fn is_nullable(&self, _args: &[Expr], _schema: &dyn ExprSchema) -> bool {
false
}
...
}
```
Digging into the code, I see that it's deprecated (it should still work even
though it's deprecated). What's strange, however, is that the deprecation
warning is not propagating to me as a downstream user. I only found this out
due to a failed test.
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