store/tikv: address comment

store/tikv/kv.go

@@ -60,7 +60,7 @@ func (d Driver) Open(path string) (kv.Storage, error) {
 	}
 
 	// FIXME: uuid will be a very long and ugly string, simplify it.
-	uuid := fmt.Sprintf("tikv-%v", etcdAddrs)
+	uuid := fmt.Sprintf("tikv-%v", pdCli.GetClusterID())
 	if store, ok := mc.cache[uuid]; ok {
 		return store, nil
 	}

store/tikv/lock_resolver.go

@@ -51,7 +51,7 @@ func NewLockResolver(etcdAddrs []string) (*LockResolver, error) {
 	if err != nil {
 		return nil, errors.Trace(err)
 	}
-	uuid := fmt.Sprintf("tikv-%v", etcdAddrs)
+	uuid := fmt.Sprintf("tikv-%v", pdCli.GetClusterID())
 	s, err := newTikvStore(uuid, &codecPDClient{pdCli}, newRPCClient(), false)
 	if err != nil {
 		return nil, errors.Trace(err)