Merge pull request #6285 from taosdata/fix/TD-4417

[TD-4417]<fix>: return database not ready if vnode status & role not …

src/vnode/src/vnodeWrite.c

@@ -303,6 +303,17 @@ static int32_t vnodeWriteToWQueueImp(SVWriteMsg *pWrite) {
 }
 
 int32_t vnodeWriteToWQueue(void *vparam, void *wparam, int32_t qtype, void *rparam) {
+  SVnodeObj *pVnode = vparam;
+  if (qtype == TAOS_QTYPE_RPC) {
+   if (!vnodeInReadyStatus(pVnode)) {
+      return TSDB_CODE_APP_NOT_READY;  // it may be in deleting or closing state
+    }
+
+    if (pVnode->role != TAOS_SYNC_ROLE_MASTER) {
+      return TSDB_CODE_APP_NOT_READY;
+    }
+  }
+
   SVWriteMsg *pWrite = vnodeBuildVWriteMsg(vparam, wparam, qtype, rparam);
   if (pWrite == NULL) {
     assert(terrno != 0);