From cb423312a424d60836f51a0d0c8608bb71dc7ee7 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Mar 2021 11:05:29 -0800
Subject: [PATCH] prevent nil volume message

---
 weed/storage/store.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/weed/storage/store.go b/weed/storage/store.go
index fb33a708c..c3507c0e2 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -217,6 +217,9 @@ func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 		location.volumesLock.RLock()
 		for _, v := range location.volumes {
 			curMaxFileKey, volumeMessage := v.ToVolumeInformationMessage()
+			if volumeMessage == nil {
+				continue
+			}
 			if maxFileKey < curMaxFileKey {
 				maxFileKey = curMaxFileKey
 			}