From ad16c561a633c7b051ec21a68f8bd3b3df6a3576 Mon Sep 17 00:00:00 2001
From: Jiquan Long <jiquan.long@zilliz.com>
Date: Tue, 12 Sep 2023 13:39:17 +0800
Subject: [PATCH] Fix printing too many warnings (#27015)

Signed-off-by: longjiquan <jiquan.long@zilliz.com>
---
 internal/util/flowgraph/node.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/internal/util/flowgraph/node.go b/internal/util/flowgraph/node.go
index f29e923a3e526..efb9dbbce063c 100644
--- a/internal/util/flowgraph/node.go
+++ b/internal/util/flowgraph/node.go
@@ -201,6 +201,11 @@ func (node *BaseNode) IsValidInMsg(in []Msg) bool {
 		return false
 	}
 
+	if len(in) == 0 {
+		// avoid printing too many logs.
+		return false
+	}
+
 	if len(in) != 1 {
 		return false
 	}