chore: Add check for uneven stores' height

store/rootmulti/store.go

@@ -156,11 +156,7 @@ func (rs *Store) MountStoreWithDB(key types.StoreKey, typ types.StoreType, db db
 	if _, ok := rs.keysByName[key.Name()]; ok {
 		panic(fmt.Sprintf("store duplicate store key name %v", key))
 	}
-	rs.storesParams[key] = storeParams{
-		key: key,
-		typ: typ,
-		db:  db,
-	}
+	rs.storesParams[key] = NewStoreParams(key, db, typ, 0)
 	rs.keysByName[key.Name()] = key
 }
 
@@ -254,8 +250,10 @@ func (rs *Store) loadVersion(ver int64, upgrades *types.StoreUpgrades) error {
 		commitID := rs.getCommitID(infos, key.Name())
 
 		// If it has been added, set the initial version
-		if upgrades.IsAdded(key.Name()) {
+		if upgrades.IsAdded(key.Name()) || upgrades.RenamedFrom(key.Name()) != "" {
 			storeParams.initialVersion = uint64(ver) + 1
+		} else if commitID.Version != ver {
+			return fmt.Errorf("version of store %s mismatch root store's version", key.Name())
 		}
 
 		store, err := rs.loadCommitStoreFromParams(key, commitID, storeParams)
@@ -275,8 +273,9 @@ func (rs *Store) loadVersion(ver int64, upgrades *types.StoreUpgrades) error {
 			// handle renames specially
 			// make an unregistered key to satisfy loadCommitStore params
 			oldKey := types.NewKVStoreKey(oldName)
-			oldParams := storeParams
-			oldParams.key = oldKey
+			oldParams := rs.storesParams[oldKey]
+			fmt.Println(oldParams)
+			fmt.Println(storeParams)
 
 			// load from the old name
 			oldStore, err := rs.loadCommitStoreFromParams(oldKey, rs.getCommitID(infos, oldName), oldParams)
@@ -1039,6 +1038,15 @@ type storeParams struct {
 	initialVersion uint64
 }
 
+func NewStoreParams(key types.StoreKey, db dbm.DB, typ types.StoreType, initialVersion uint64) storeParams {
+	return storeParams{
+		key:            key,
+		db:             db,
+		typ:            typ,
+		initialVersion: initialVersion,
+	}
+}
+
 func GetLatestVersion(db dbm.DB) int64 {
 	bz, err := db.Get([]byte(latestVersionKey))
 	if err != nil {

store/rootmulti/store_test.go

@@ -606,6 +606,30 @@ func TestMultiStore_PruningRestart(t *testing.T) {
 	}
 }
 
+func TestUnevenStoresHeightCheck(t *testing.T) {
+	var db dbm.DB = dbm.NewMemDB()
+	store := newMultiStoreWithMounts(db, pruningtypes.NewPruningOptions(pruningtypes.PruningNothing))
+	err := store.LoadLatestVersion()
+	require.Nil(t, err)
+
+	// commit to increment store's height
+	store.Commit()
+
+	// mount store4 to root store
+	store.MountStoreWithDB(types.NewKVStoreKey("store4"), types.StoreTypeIAVL, nil)
+
+	// load the stores without upgrades
+	err = store.LoadLatestVersion()
+	require.Error(t, err)
+
+	// now, let's load with upgrades...
+	upgrades := &types.StoreUpgrades{
+		Added: []string{"store4"},
+	}
+	err = store.LoadLatestVersionAndUpgrade(upgrades)
+	require.Nil(t, err)
+}
+
 func TestSetInitialVersion(t *testing.T) {
 	db := dbm.NewMemDB()
 	multi := newMultiStoreWithMounts(db, pruningtypes.NewPruningOptions(pruningtypes.PruningNothing))