alamb commented on a change in pull request #9276:
URL: https://github.com/apache/arrow/pull/9276#discussion_r561003845
##########
File path: rust/datafusion/src/physical_plan/common.rs
##########
@@ -121,121 +128,130 @@ pub fn build_file_list(dir: &str, filenames: &mut
Vec<String>, ext: &str) -> Res
Ok(())
}
-/// creates an empty record batch.
+/// Creates an empty (0 row) record batch with the specified schema
pub fn create_batch_empty(schema: &Schema) -> ArrowResult<RecordBatch> {
let columns = schema
.fields()
.iter()
- .map(|f| match f.data_type() {
Review comment:
this code is just hoisted into its own function so it can be called
recursively
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