zhuqi-lucas commented on code in PR #19064:
URL: https://github.com/apache/datafusion/pull/19064#discussion_r2621931314
##########
datafusion/datasource/src/file.rs:
##########
@@ -183,4 +200,19 @@ pub trait FileSource: Send + Sync {
fn schema_adapter_factory(&self) -> Option<Arc<dyn SchemaAdapterFactory>> {
None
}
+
+ /// Set the file ordering information
+ ///
+ /// This allows the file source to know how the files are sorted,
+ /// enabling it to make informed decisions about sort pushdown.
+ ///
+ /// Default implementation returns self (no-op for sources that don't need
ordering info)
+ fn with_file_ordering_info(
+ &self,
+ _ordering: Option<LexOrdering>,
+ ) -> Result<Arc<dyn FileSource>> {
+ // Default: clone self without modification
+ // ParquetSource will override this
+ not_impl_err!("with_file_ordering_info not implemented for this
FileSource")
Review Comment:
Good catch @adriangb , fixed the comments in latest PR, thanks!
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