check public API's can be replaced

Author: getChan

datafusion/datasource-avro/src/file_format.rs

@@ -16,7 +16,7 @@
 // under the License.
 
 //! Apache Avro [`FileFormat`] abstractions
-
+// todo - Check if it can be replaced with arrow-avro
 use std::any::Any;
 use std::collections::HashMap;
 use std::fmt;

datafusion/datasource-avro/src/source.rs

@@ -56,9 +56,9 @@ impl AvroSource {
             self.schema.expect("Schema must set before open").as_ref(),
         )?;
         ReaderBuilder::new()
-            .with_reader_schema(avro_schema)
+            .with_reader_schema(avro_schema) // Used for projection on read.
             .with_batch_size(self.batch_size.expect("Batch size must set before open"))
-            .build(reader)
+            .build(reader) // TODO - A File (which doesn't implement BufRead) is being passed; confirm whether this is safe.
             .map_err(Into::into)
     }
 }