diff --git a/docs/examples/python/highvolume_example.py b/docs/examples/python/highvolume_example.py
index 8a8e042266837cde239c9bd289e5521766e6570e..c3e41e946737d1de0dd7b5aa44104592b46d1a1c 100644
--- a/docs/examples/python/highvolume_example.py
+++ b/docs/examples/python/highvolume_example.py
@@ -159,7 +159,7 @@ def set_global_config():
 # ANCHOR: main
 def main():
     set_global_config()
-    logging.info(f"READ_TASK_COUNT={READ_TASK_COUNT}, WRITE_TASK_COUNT={WRITE_TASK_COUNT}, TABLE_COUNT={TABLE_COUNT}, MAX_BATCH_SIZE={MAX_BATCH_SIZE}")
+    logging.info(f"READ_TASK_COUNT={READ_TASK_COUNT}, WRITE_TASK_COUNT={WRITE_TASK_COUNT}, QUEUE_SIZE={QUEUE_SIZE}, TABLE_COUNT={TABLE_COUNT}, MAX_BATCH_SIZE={MAX_BATCH_SIZE}")
 
     database_monitor = DataBaseMonitor()
     time.sleep(3)  # wait for database ready