From 5f233f3e2168641c5f991baffc3c7f74a21037f1 Mon Sep 17 00:00:00 2001
From: Tan Jiang <jiangd@vmware.com>
Date: Wed, 12 Jul 2017 15:05:27 +0800
Subject: [PATCH] address comment

---
 src/common/dao/clair/base.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/common/dao/clair/base.go b/src/common/dao/clair/base.go
index ca67aaa9c..9f952af4f 100644
--- a/src/common/dao/clair/base.go
+++ b/src/common/dao/clair/base.go
@@ -65,5 +65,9 @@ func GetLastUpdate() (int64, error) {
 		}
 		return res, nil
 	}
+	if num > 1 {
+		return 0, fmt.Errorf("Multiple entries for %s in Clair DB", updaterLast)
+	}
+	//num is zero, it's not updated yet.
 	return 0, nil
 }