diff --git a/tests/pytest/update/merge_commit_data.py b/tests/pytest/update/merge_commit_data.py
index d2b425b95550a3665860369bfc8c189b3d510be0..9b3fea186543cd84eac1c3e1d553c5fb124d509e 100644
--- a/tests/pytest/update/merge_commit_data.py
+++ b/tests/pytest/update/merge_commit_data.py
@@ -57,9 +57,7 @@ class TDTestCase:
           tdSql.query("select * from t1")
           tdSql.checkRows(insertRows)
           tdDnodes.stop(1)
-          time.sleep(5)
           tdDnodes.start(1)
-          time.sleep(5)
           tdSql.query("select * from t1")
           tdSql.checkRows(insertRows)
         print("==========step2")
@@ -73,6 +71,7 @@ class TDTestCase:
         tdSql.query("select * from t2")
         tdSql.checkRows(insertRows)
         tdDnodes.stop(1)
+        tdDnodes.start(1)
         tdSql.query("select * from t2")
         tdSql.checkRows(insertRows)
         for i in range(-100,0):