Merge pull request #17802 from taosdata/fix/TD-20089

test: adjust unstable case

tests/script/jenkins/basic.txt

@@ -321,7 +321,7 @@
 
 # --- vnode ----
 ./test.sh -f tsim/vnode/replica3_basic.sim
-# TD-20089 ./test.sh -f tsim/vnode/replica3_repeat.sim
+./test.sh -f tsim/vnode/replica3_repeat.sim
 ./test.sh -f tsim/vnode/replica3_vgroup.sim
 ./test.sh -f tsim/vnode/replica3_many.sim
 ./test.sh -f tsim/vnode/replica3_import.sim

tests/script/tsim/vnode/replica3_repeat.sim

@@ -107,7 +107,16 @@ system sh/exec.sh -n dnode2 -s stop
 sleep 3000
 
 print ======== step7
-sql select count(*) from db.tb
+$x = 0
+step7:
+	$x = $x + 1
+	sleep 1000
+	if $x == 30 then
+	  print ====> dnode not ready!
+		return -1
+	endi
+sql select count(*) from db.tb -x step7
+
 print select count(*) from db.tb ==> $data00 $lastRows 
 if $data00 <= $lastRows then
   return -1