diff --git a/src/mnode/src/mnodeDb.c b/src/mnode/src/mnodeDb.c
index 8af20aa862d3b126cfd3332e42423e7b08414b63..7cc5d41ae1c63eef9853aaafa1ceaa2669e1fab9 100644
--- a/src/mnode/src/mnodeDb.c
+++ b/src/mnode/src/mnodeDb.c
@@ -389,7 +389,7 @@ static void mnodeSetDefaultDbCfg(SDbCfg *pCfg) {
   if (pCfg->compression < 0) pCfg->compression = tsCompression;
   if (pCfg->walLevel < 0) pCfg->walLevel = tsWAL;
   if (pCfg->replications < 0) pCfg->replications = tsReplications;
-  if (pCfg->quorum < 0) pCfg->quorum = tsQuorum;
+  if (pCfg->quorum < 0) pCfg->quorum = MIN(tsQuorum, pCfg->replications);
   if (pCfg->update < 0) pCfg->update = tsUpdate;
   if (pCfg->cacheLastRow < 0) pCfg->cacheLastRow = tsCacheLastRow;
   if (pCfg->dbType < 0) pCfg->dbType = 0;
diff --git a/src/vnode/src/vnodeMain.c b/src/vnode/src/vnodeMain.c
index ca3746c5989b4928e57e096e5236dad3039d709d..f133101ccad3c7eaa7bd206f3355ff5ff8b82298 100644
--- a/src/vnode/src/vnodeMain.c
+++ b/src/vnode/src/vnodeMain.c
@@ -120,12 +120,14 @@ int32_t vnodeDrop(int32_t vgId) {
     vDebug("vgId:%d, failed to drop, vnode not find", vgId);
     return TSDB_CODE_VND_INVALID_VGROUP_ID;
   }
+  if (pVnode->dropped) {
+    vnodeRelease(pVnode);
+    return TSDB_CODE_SUCCESS;
+  }
 
   vInfo("vgId:%d, vnode will be dropped, refCount:%d pVnode:%p", pVnode->vgId, pVnode->refCount, pVnode);
   pVnode->dropped = 1;
 
-  // remove from hash, so new messages wont be consumed
-  vnodeRemoveFromHash(pVnode);
   vnodeRelease(pVnode);
   vnodeCleanupInMWorker(pVnode);
 
@@ -425,6 +427,10 @@ int32_t vnodeOpen(int32_t vgId) {
 int32_t vnodeClose(int32_t vgId) {
   SVnodeObj *pVnode = vnodeAcquire(vgId);
   if (pVnode == NULL) return 0;
+  if (pVnode->dropped) {
+    vnodeRelease(pVnode);
+    return 0;
+  }
 
   vDebug("vgId:%d, vnode will be closed, pVnode:%p", pVnode->vgId, pVnode);
   vnodeRemoveFromHash(pVnode);
@@ -510,6 +516,8 @@ void vnodeCleanUp(SVnodeObj *pVnode) {
 
   vnodeSetClosingStatus(pVnode);
 
+  vnodeRemoveFromHash(pVnode);
+
   // stop replication module
   if (pVnode->sync > 0) {
     int64_t sync = pVnode->sync;
diff --git a/src/vnode/src/vnodeRead.c b/src/vnode/src/vnodeRead.c
index b28bdbf130aaef8b3e3ffc8cda0653e46d0efc29..2831090267004ba92cd08b91b0f968b144025256 100644
--- a/src/vnode/src/vnodeRead.c
+++ b/src/vnode/src/vnodeRead.c
@@ -117,14 +117,17 @@ static SVReadMsg *vnodeBuildVReadMsg(SVnodeObj *pVnode, void *pCont, int32_t con
 }
 
 int32_t vnodeWriteToRQueue(void *vparam, void *pCont, int32_t contLen, int8_t qtype, void *rparam) {
+  SVnodeObj *pVnode = vparam;
+  if (pVnode->dropped) {
+    return TSDB_CODE_APP_NOT_READY;
+  }
+
   SVReadMsg *pRead = vnodeBuildVReadMsg(vparam, pCont, contLen, qtype, rparam);
   if (pRead == NULL) {
     assert(terrno != 0);
     return terrno;
   }
 
-  SVnodeObj *pVnode = vparam;
-
   int32_t code = vnodeCheckRead(pVnode);
   if (code != TSDB_CODE_SUCCESS) {
     taosFreeQitem(pRead);
diff --git a/src/vnode/src/vnodeStatus.c b/src/vnode/src/vnodeStatus.c
index c482d1fd1a44497b2ba3ff8482d4d1f66bb11ff5..1eaddc3d25fef5d8753ef1f645413326360fa101 100644
--- a/src/vnode/src/vnodeStatus.c
+++ b/src/vnode/src/vnodeStatus.c
@@ -66,6 +66,9 @@ static bool vnodeSetClosingStatusImp(SVnodeObj* pVnode) {
 }
 
 bool vnodeSetClosingStatus(SVnodeObj* pVnode) {
+  if (pVnode->status == TAOS_VN_STATUS_CLOSING)
+    return true;
+
   while (!vnodeSetClosingStatusImp(pVnode)) {
     taosMsleep(1);
   }
diff --git a/src/vnode/src/vnodeSync.c b/src/vnode/src/vnodeSync.c
index 05af34a34f0bed6fd72d24946c9a50e7232e5352..e5a1964915646c7d6da106b003abbc9909ed71db 100644
--- a/src/vnode/src/vnodeSync.c
+++ b/src/vnode/src/vnodeSync.c
@@ -55,6 +55,11 @@ void vnodeNotifyRole(int32_t vgId, int8_t role) {
     vTrace("vgId:%d, vnode not found while notify role", vgId);
     return;
   }
+  if (pVnode->dropped) {
+    vTrace("vgId:%d, vnode dropped while notify role", vgId);
+    vnodeRelease(pVnode);
+    return;
+  }
 
   vInfo("vgId:%d, sync role changed from %s to %s", pVnode->vgId, syncRole[pVnode->role], syncRole[role]);
   pVnode->role = role;
@@ -75,6 +80,11 @@ void vnodeCtrlFlow(int32_t vgId, int32_t level) {
     vTrace("vgId:%d, vnode not found while flow ctrl", vgId);
     return;
   }
+  if (pVnode->dropped) {
+    vTrace("vgId:%d, vnode dropped while flow ctrl", vgId);
+    vnodeRelease(pVnode);
+    return;
+  }
 
   if (pVnode->flowctrlLevel != level) {
     vDebug("vgId:%d, set flowctrl level from %d to %d", pVnode->vgId, pVnode->flowctrlLevel, level);
@@ -129,6 +139,7 @@ int32_t vnodeWriteToCache(int32_t vgId, void *wparam, int32_t qtype, void *rpara
   SVnodeObj *pVnode = vnodeAcquire(vgId);
   if (pVnode == NULL) {
     vError("vgId:%d, vnode not found while write to cache", vgId);
+    vnodeRelease(pVnode);
     return TSDB_CODE_VND_INVALID_VGROUP_ID;
   }
 
diff --git a/src/vnode/src/vnodeWrite.c b/src/vnode/src/vnodeWrite.c
index 36516d81df50a1903bb0d6c332b4eacf35f248c1..56ea32ccc0d2aa71068f49349a6d7f02ddbe1db2 100644
--- a/src/vnode/src/vnodeWrite.c
+++ b/src/vnode/src/vnodeWrite.c
@@ -386,4 +386,6 @@ void vnodeWaitWriteCompleted(SVnodeObj *pVnode) {
     vTrace("vgId:%d, queued wmsg num:%d", pVnode->vgId, pVnode->queuedWMsg);
     taosMsleep(10);
   }
+
+  taosMsleep(900);
 }