From 87a3cac462e46b6a28f3f5834411704e948d7295 Mon Sep 17 00:00:00 2001
From: Vaibhav Hemant Dixit <vaibhav.dixit@microsoft.com>
Date: Thu, 11 Mar 2021 20:35:10 +0000
Subject: [PATCH] Check empty key before issuing redis hget

---
 scripts/fast-reboot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/fast-reboot b/scripts/fast-reboot
index 7b5b1a27b4..92648bd207 100755
--- a/scripts/fast-reboot
+++ b/scripts/fast-reboot
@@ -392,7 +392,7 @@ function save_counters_folder() {
 
 function check_warm_restart_in_progress() {
     sonic-db-cli STATE_DB keys "WARM_RESTART_ENABLE_TABLE|*" | while read key ; do
-        if [[ x"$(sonic-db-cli STATE_DB hget $key enable)" == x"true" ]]; then
+        if [ -n "$key" ] && [[ x"$(sonic-db-cli STATE_DB hget $key enable)" == x"true" ]]; then
             if [[ x"${FORCE}" == x"yes" ]]; then
                 debug "Ignoring warm restart flag for ${key#*|}"
             else