WIP: Avoid row_group_ordinal

Author: srh

datafusion/core/src/datasource/file_format/parquet.rs

@@ -935,8 +935,7 @@ fn spawn_column_parallel_row_group_writer(
     pool: &Arc<dyn MemoryPool>,
 ) -> Result<(Vec<ColumnWriterTask>, Vec<ColSender>)> {
     let schema_desc = arrow_to_parquet_schema(&schema)?;
-    let row_group_ordinal_unused = 0;
-    let col_writers = get_column_writers(&schema_desc, &parquet_props, &schema, row_group_ordinal_unused)?;
+    let col_writers = get_column_writers(&schema_desc, &parquet_props, &schema, None)?;
     let num_columns = col_writers.len();
 
     let mut col_writer_tasks = Vec::with_capacity(num_columns);