diff --git a/tests/system-test/2-query/hyperloglog.py b/tests/system-test/2-query/hyperloglog.py
index e481d2c043..68f7ebdf2e 100644
--- a/tests/system-test/2-query/hyperloglog.py
+++ b/tests/system-test/2-query/hyperloglog.py
@@ -28,6 +28,8 @@ ALL_COL = [ INT_COL, BINT_COL, SINT_COL, TINT_COL, FLOAT_COL, DOUBLE_COL, BOOL_C
 DBNAME = "db"
 
 class TDTestCase:
+    
+    updatecfgDict = {"maxTablesPerVnode":2 ,"minTablesPerVnode":2,"tableIncStepPerVnode":2 }
 
     def init(self, conn, logSql):
         tdLog.debug(f"start to excute {__file__}")