Print the length of the flattened list in debug message

processing/process.py

@@ -123,15 +123,15 @@ async def spawn_processing_threads(data):
         tasks.append(task)
 
     results = [await task for task in tasks]
+
+    # Join the results back from the split list
+    flat_list = [item for sublist in results for item in sublist]
     log.debug(
         (
             f"Results from processing of {len_data} messages in "
-            f"{len(split_data)} threads: {len(results)}"
+            f"{len(split_data)} threads: {len(flat_list)}"
         )
     )
-
-    # Join the results back from the split list
-    flat_list = [item for sublist in results for item in sublist]
     await db.store_kafka_batch(flat_list)
 
     # log.debug(f"Finished processing {len_data} messages")