diff --git a/internal/distributed/indexnode/param_table.go b/internal/distributed/indexnode/param_table.go
index f469571fbe989cc73cd609fe98284853efa25646..d0cf46f9e8aadbcef376126eaa70df28b468ef2e 100644
--- a/internal/distributed/indexnode/param_table.go
+++ b/internal/distributed/indexnode/param_table.go
@@ -62,6 +62,7 @@ func (pt *ParamTable) LoadFromEnv() {
 	Params.IP = funcutil.GetLocalIP()
 }
 
+// initParams initializes params of the configuration items.
 func (pt *ParamTable) initParams() {
 	pt.LoadFromEnv()
 	pt.LoadFromArgs()