diff --git a/tests/script/unique/cluster/cluster_main.sim b/tests/script/unique/cluster/cluster_main.sim
index f3cce9fd45f90d2d00c509dc1f7f14d2f52278a4..da4f709f46e35bf1aed2c946aa2a0adb7b2322db 100644
--- a/tests/script/unique/cluster/cluster_main.sim
+++ b/tests/script/unique/cluster/cluster_main.sim
@@ -69,14 +69,13 @@ sql use $db
 
 print ============== step3: create stable stb1
 $stb = stb1
-print create table $stb (ts timestamp, c1 int) tags(t1 int, t2 binary(16))
-sql create table $stb (ts timestamp, c1 int) tags(t1 int, t2 binary(16))
+sql create table $stb (ts timestamp, c1 int) tags(t1 int, t2 binary(8))
 
-print ============== step4: start others client
+print ============== step4: start 10 client1/ 10 client2/ 10 client3/ 10 client4/ 1 client5
 run_back unique/cluster/client1_0.sim
-run_back unique/cluster/client1_1.sim
-run_back unique/cluster/client1_2.sim
-run_back unique/cluster/client1_3.sim
+#run_back unique/cluster/client1_1.sim
+#run_back unique/cluster/client1_2.sim
+#run_back unique/cluster/client1_3.sim
 #run_back unique/cluster/client2_0.sim
 #run_back unique/cluster/client2_1.sim
 #run_back unique/cluster/client2_2.sim
@@ -119,16 +118,14 @@ sql create dnode $hostname5
 sleep 5000
 
 
-print ============== step6: stop dnode1
+print ============== step6: stop and drop dnode1, then remove data dir of dnode1 
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 10000
-#sql drop dnode $hostname1
-#sleep 5000
-#system rm -rf ../../../sim/dnode1/data
-#sleep 20000
-print ============== step6-1: restart dnode1
-system sh/exec.sh -n dnode1 -s start
-sleep 10000
+sleep 5000
+sql drop dnode $hostname1
+sleep 5000
+
+system rm -rf ../../../sim/dnode1/data
+sleep 20000
 
 sql show mnodes
 print show mnodes
@@ -241,12 +238,11 @@ endi
 print ============== step14: stop and drop dnode4/dnode5, then remove data dir of dnode4/dnode5 
 system sh/exec.sh -n dnode4 -s stop -x SIGINT
 system sh/exec.sh -n dnode5 -s stop -x SIGINT
-sleep 3000
+sleep 20000
 sql drop dnode $hostname4
 sql drop dnode $hostname5
 system rm -rf ../../../sim/dnode4/data
 system rm -rf ../../../sim/dnode5/data
-sleep 20000
 
 print ============== step15: alter replica 1
 sql alter database $db replica 1
@@ -266,13 +262,13 @@ if $data04 != 2 then
   return -1
 endi
 
-#print ============== step17: start dnode1 and add into cluster, then wait dnode1 ready
-#system sh/cfg.sh -n dnode1 -c first -v $hostname2
-#system sh/cfg.sh -n dnode1 -c second -v $hostname3
-#
-#system sh/exec.sh -n dnode1 -s start
-#sql create dnode $hostname1
-#sleep 20000
+print ============== step17: start dnode1 and add into cluster, then wait dnode1 ready
+system sh/cfg.sh -n dnode1 -c first -v $hostname2
+system sh/cfg.sh -n dnode1 -c second -v $hostname3
+
+system sh/exec.sh -n dnode1 -s start
+sql create dnode $hostname1
+sleep 20000
 
 print ============== step18: alter replica 3
 sql alter database $db replica 3