The minimum value of vgroupid is set to 2

source/dnode/mnode/impl/src/mndVgroup.c

@@ -333,6 +333,8 @@ int32_t mndAllocVgroup(SMnode *pMnode, SDbObj *pDb, SVgObj **ppVgroups) {
   uint32_t hashMax = UINT32_MAX;
   uint32_t hashInterval = (hashMax - hashMin) / pDb->cfg.numOfVgroups;
 
+  if (maxVgId < 2) maxVgId = 2;
+
   for (uint32_t v = 0; v < pDb->cfg.numOfVgroups; v++) {
     SVgObj *pVgroup = &pVgroups[v];
     pVgroup->vgId = maxVgId++;