make-mirror process exists but it does not work after a network failure for a period of time

[HADINIIT]

Setup

• etcd Version: 3.2.7
• OS/Arch : Linux/amd64

Reproduction step

1. start two etcd clusters like the following command

cluster1(3 members in one machine):

etcd --name M1 --data-dir /opt/etcd_1/data --initial-advertise-peer-urls http://10.37.64.52:2380 --listen-peer-urls http://10.37.64.52:2380 --advertise-client-urls http://0.0.0.0:2379 --listen-client-urls http://0.0.0.0:2379 --initial-cluster M1=http://10.37.64.52:2380,M2=http://10.37.64.52:3380,M3=http://10.37.64.52:4380 --initial-cluster-state new --initial-cluster-token etcd-cluster1 --auto-compaction-retention 2

......

cluster2(3 members in one machine):

etcd --name M1 --data-dir /opt/etcd_1/data --initial-advertise-peer-urls http://10.37.64.53:2380 --listen-peer-urls http://10.37.64.53:2380 --advertise-client-urls http://0.0.0.0:2379 --listen-client-urls http://0.0.0.0:2379 --initial-cluster M1=http://10.37.64.53:2380,M2=http://10.37.64.53:3380,M3=http://10.37.64.53:4380 --initial-cluster-state new --initial-cluster-token etcd-cluster2 --auto-compaction-retention 2

......

2. start the make-mirror process

execute the following command in cluster2

nohup etcdctl --endpoints=[10.37.64.52:2379,10.37.64.52:3379,10.37.64.52:4379] make-mirror --prefix=/cluster1 http://10.37.64.53:4379 >/dev/null 2>&1 &

3. Analog network fault

execute the following command in cluster2

iptables -A INPUT -j REJECT -s 10.37.64.52
iptables -A OUTPUT -j REJECT -d 10.37.64.52

atfer a period of time(sometimes about 2 minutes ,sometimes more),recovery the network

iptables -D INPUT -j REJECT -s 10.37.64.52
iptables -D OUTPUT -j REJECT -d 10.37.64.52

4. make-mirror process exists,but it does not work

put key in cluster1

etcdctl --endpoints=[10.37.64.52:2379,10.37.64.52:3379,10.37.64.52:4379] put /cluster1/test_key test

make-mirror process exists, but the key does not exists in cluster2