diff --git a/src/wikiq/__init__.py b/src/wikiq/__init__.py
index ea6bb76..426d43e 100755
--- a/src/wikiq/__init__.py
+++ b/src/wikiq/__init__.py
@@ -422,7 +422,6 @@ class WikiqParser:
                 }
                 for path in ns_paths.values():
                     Path(path).parent.mkdir(exist_ok=True, parents=True)
-                output_buffers = {ns: [] for ns, path in ns_paths.values()}
                 pq_writers = {
                     ns: pq.ParquetWriter(
                         path, schema, flavor="spark", sorting_columns=sorting_cols
@@ -431,7 +430,6 @@ class WikiqParser:
                 }
 
         else:
-            output_buffer = []
             writer = pacsv.CSVWriter(
                 self.output_file,
                 schema,
@@ -679,10 +677,7 @@ class WikiqParser:
                     del row_buffer["text"]
 
                 if self.partition_namespaces is True:
-                    output_buffer = output_buffers[page.mwpage.namespace]
                     writer = pq_writers[page.mwpage.namespace]
-                output_buffer += row_buffer
-                if(len(output_buffer) > 
                 writer.write(pa.record_batch(row_buffer, schema=schema))
                 gc.collect()
             page_count += 1
@@ -880,7 +875,7 @@ def main():
     parser.add_argument(
         "--batch-size",
         dest="batch_size",
-        default=16000,
+        default=1500,
         type=int,
         help="How many revisions to process in each batch. This ends up being the Parquet row group size",
     )