diff --git a/opensearch/client.go b/opensearch/client.go
index 89d38bf..5051407 100644
--- a/opensearch/client.go
+++ b/opensearch/client.go
@@ -144,12 +144,13 @@ func (c *Client) sendLoop(ctx context.Context) {
 			if err != nil {
 				if netoperr, ok := err.(*net.OpError); ok && netoperr.Op == "dial" {
 					// 접속 안됨. 파일로 남기고 끝
-					logger.Println("log send bulk failed :", err)
+					logger.Println("log send bulk failed. no retry :", err)
 					for _, e := range sending {
 						logger.Println(string(e))
 					}
 				} else {
 					// 재시도
+					logger.Println("log send bulk failed. retry :", err)
 					failChan <- sending
 				}
 				return