diff --git a/tests/system-test/0-others/retention_test2.py b/tests/system-test/0-others/retention_test2.py
new file mode 100644
index 0000000000..94c92bd154
--- /dev/null
+++ b/tests/system-test/0-others/retention_test2.py
@@ -0,0 +1,100 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+
+import os
+import time
+from util.log import *
+
+from util.cases import *
+from util.sql import *
+from util.common import *
+from util.sqlset import *
+import subprocess
+from datetime import datetime, timedelta
+
+
+class TDTestCase:
+    def _prepare_env1(self):
+        tdLog.info("============== prepare environment 1 ===============")
+
+        level0_paths = [
+            f'{self.dnode_path}/data00',
+            f'{self.dnode_path}/data01',
+            # f'{self.dnode_path}/data02',
+        ]
+
+        cfg = {
+            f"{level0_paths[0]} 0 1": 'dataDir',
+            f"{level0_paths[1]} 0 0": 'dataDir',
+            # f"{level0_paths[2]} 0 0": 'dataDir',
+        }
+
+        for path in level0_paths:
+            tdSql.createDir(path)
+        tdDnodes.stop(1)
+        tdDnodes.deploy(1, cfg)
+        tdDnodes.start(1)
+
+    def _create_db_write_and_flush(self, dbname):
+        tdSql.execute(f'create database {dbname} vgroups 1 stt_trigger 1')
+        tdSql.execute(f'use {dbname}')
+        tdSql.execute(f'create table t1 (ts timestamp, a int) ')
+        tdSql.execute(f'create table t2 (ts timestamp, a int) ')
+
+        now = int(datetime.now().timestamp() * 1000)
+
+        for i in range(1000):
+            tdSql.execute(f'insert into t1 values ({now + i}, {i})')
+
+        tdSql.execute(f'flush database {dbname}')
+
+        for i in range(1):
+            tdSql.execute(f'insert into t2 values ({now + i}, {i})')
+
+        tdSql.execute(f'flush database {dbname}')
+
+    def run(self):
+        self._prepare_env1()
+
+        for dbname in [f'db{i}' for i in range(0, 20)]:
+            self._create_db_write_and_flush(dbname)
+
+        cmd = f"find {self.dnode_path}/data00 -name 'v*.data' | wc -l"
+        num_files1 = int(subprocess.check_output(cmd, shell=True).strip())
+
+        cmd = f"find {self.dnode_path}/data01 -name 'v*.data' | wc -l"
+        num_files2 = int(subprocess.check_output(cmd, shell=True).strip())
+        tdSql.checkEqual(num_files1, num_files2)
+
+        tdDnodes.stop(1)
+
+        time.sleep(10)
+
+    def init(self, conn, logSql, replicaVar=1):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor())
+
+        self.dnode_path = tdCom.getTaosdPath()
+        self.cfg_path = f'{self.dnode_path}/cfg'
+        self.log_path = f'{self.dnode_path}/log'
+        self.db_name = 'test'
+        self.vgroups = 10
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())