diff --git a/src/mnode/src/mgmtDnode.c b/src/mnode/src/mgmtDnode.c
index b041d862cfe3257007eb0319be24488f41d6b0c8..bb98e1c3e6d8ef43fa0bc3ace647b70f6dd02f83 100644
--- a/src/mnode/src/mgmtDnode.c
+++ b/src/mnode/src/mgmtDnode.c
@@ -426,6 +426,7 @@ static int32_t mgmtDropDnodeByEp(char *ep) {
     return TSDB_CODE_NO_REMOVE_MASTER;
   }
 
+  mPrint("dnode:%d, start to drop it", pDnode->dnodeId);
 #ifndef _SYNC
   return mgmtDropDnode(pDnode);
 #else
diff --git a/src/mnode/src/mgmtVgroup.c b/src/mnode/src/mgmtVgroup.c
index 2162230606ca182d574f5b45af98cd927d1b545e..f83268e760ab85e07c22249bff28db6430e598c5 100644
--- a/src/mnode/src/mgmtVgroup.c
+++ b/src/mnode/src/mgmtVgroup.c
@@ -160,10 +160,7 @@ static int32_t mgmtVgroupActionUpdate(SSdbOper *pOper) {
 
   mgmtDecVgroupRef(pVgroup);
 
-  mTrace("vgId:%d, is updated, numOfVnode:%d", pVgroup->vgId, pVgroup->numOfVnodes);
-  if (pDb) {
-    mTrace("tables:%d", pDb->cfg.maxTables);
-  }
+  mTrace("vgId:%d, is updated, numOfVnode:%d tables:%d", pVgroup->vgId, pVgroup->numOfVnodes, pDb == NULL ? 0 : pDb->cfg.maxTables);
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/tests/script/unique/cluster/balance1.sim b/tests/script/unique/cluster/balance1.sim
index 97d5bb468a4d3e20f5a6715a1de6f117625ddd36..50f56688f36ab4b95d6c59f6ce1c74953927b530 100644
--- a/tests/script/unique/cluster/balance1.sim
+++ b/tests/script/unique/cluster/balance1.sim
@@ -92,7 +92,7 @@ $x = 0
 show2: 
 	$x = $x + 1
 	sleep 2000
-	if $x == 30 then
+	if $x == 20 then
 	  return -1
 	endi
 sql show dnodes -x show2
@@ -134,7 +134,7 @@ $x = 0
 show4: 
 	$x = $x + 1
 	sleep 2000
-	if $x == 30 then
+	if $x == 20 then
 	  return -1
 	endi
 sql show dnodes -x show4