diff --git a/tests/system-test/0-others/walRetention.py b/tests/system-test/0-others/walRetention.py
index 2bcd3f61c21128a8af83a38687ce3b5972ccedc7..84b1914e8cad04b23b9dbe616726122a7aefe51f 100644
--- a/tests/system-test/0-others/walRetention.py
+++ b/tests/system-test/0-others/walRetention.py
@@ -16,6 +16,7 @@
 #
 
 import taos
+from taos.tmq import Consumer
 
 from util.log import *
 from util.cases import *
@@ -328,16 +329,17 @@ class TDTestCase:
             if j % 100 == 0:
                 tdSql.execute(f"flush database {self.dbname}")
                 tdLog.info("   insert row cost time = %ds rows = %d"%(cost, j))
+                self.consume_topic("topic1", 5)
 
-            if cost > insertTime and j > 1000:
+            if cost > insertTime and j > 100:
                 tdLog.info(" insert finished. cost time = %ds rows = %d"%(cost, j))
                 return
    
     # create tmq
     def create_tmq(self):
-        sql = f"create topic topic1_{self.dbname} as select ts, col1, concat(col12,t12) from {self.stbname};" 
+        sql = f"create topic topic1 as select ts, col1, concat(col12,t12) from {self.stbname};" 
         tdSql.execute(sql)
-        sql = f"create topic topic2_{self.dbname} as select * from {self.stbname};" 
+        sql = f"create topic topic2 as select * from {self.stbname};" 
         tdSql.execute(sql)
         #tdLog.info(sql)
 
@@ -351,23 +353,53 @@ class TDTestCase:
         for dnode in os.listdir(self.projDir):
             vnodeDir = self.projDir + f"{dnode}/data/vnode/"
             print(f"vnodeDir={vnodeDir}")
-            if dnode == "psim":
+            if os.path.isdir(vnodeDir) == False or dnode[:5] != "dnode":
                 continue
             # enum all vnode
             for entry in os.listdir(vnodeDir):
                 entryPath = path.join(vnodeDir, entry)
+                
                 if os.path.isdir(entryPath):
                     if path.exists(path.join(entryPath, "vnode.json")):
-                        try:
-                           vnode = VNode(i, entryPath, self.wal_period, self.wal_size)
-                           vnodes.append(vnode)
-                        except:
-                            continue
+                        vnode = VNode(int(dnode[5:]), entryPath, self.wal_period, self.wal_size)
+                        vnodes.append(vnode)
         
         # do check
         for vnode in vnodes:
             vnode.check_retention()
 
+    # consume topic 
+    def consume_topic(self, topic_name, consume_cnt):
+        print("start consume...")
+        consumer = Consumer(
+            {
+                "group.id": "tg2",
+                "td.connect.user": "root",
+                "td.connect.pass": "taosdata",
+                "enable.auto.commit": "true",
+            }
+        )
+        print("start subscrite...")
+        consumer.subscribe([topic_name])
+
+        cnt = 0
+        try:
+            while True and cnt < consume_cnt:
+                res = consumer.poll(1)
+                if not res:
+                    break
+                err = res.error()
+                if err is not None:
+                    raise err
+                val = res.value()
+                cnt += 1
+                print(f" consume {cnt} ")
+                for block in val:
+                    print(block.fetchall())
+        finally:
+            consumer.unsubscribe()
+            consumer.close()
+
 
     # test db1
     def test_db(self, dbname, checkTime ,wal_period, wal_size_kb):
@@ -375,7 +407,7 @@ class TDTestCase:
         stable = "meters"
         tbname = "d"
         vgroups = 6
-        count = 20
+        count = 10
 
         # do 
         self.create_database(dbname, wal_period, wal_size_kb, vgroups)
@@ -400,6 +432,7 @@ class TDTestCase:
         tdLog.info(f" {dbname} stop insert ...")
         tdLog.info(f" {dbname} test_db end.")
 
+
     # run
     def run(self):
         # period
@@ -408,7 +441,8 @@ class TDTestCase:
         #self.test_db("db2", 5, 10*24*3600, 2*1024) # 2M size
         
         # period + size        
-        self.test_db("db", checkTime = 5*60, wal_period = 60, wal_size_kb=10)
+        #self.test_db("db", checkTime = 5*60, wal_period = 60, wal_size_kb=10)
+        self.test_db("db", checkTime = 1*60, wal_period = 0, wal_size_kb=0)
 
 
     def stop(self):