Received message intended for raft_id X

General Discussions
1

My flog is being flooded with messages like this:

Mar 5 16:46:35 appX dockerd[741]: time=“2019-03-05T16:46:35.746352481Z” level=error msg=“received message intended for raft_id 4b38f79fe57cd5d0” from=3f8c4faed6db4982 method=“(*Node).ProcessRaftMessage” raft_id=74d75c4c3f928c13

My environment:

# cat /etc/debian_version 
9.8
root@app12:~# uname -a
Linux appX 4.9.0-8-amd64 #1 SMP Debian 4.9.144-3 (2019-02-02) x86_64 GNU/Linux
# docker info
Containers: 14
 Running: 14
 Paused: 0
 Stopped: 0
Images: 190
Server Version: 18.09.2
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: active
 NodeID: 9uzalv96fealvtk5xwkr22vk6
 Is Manager: true
 ClusterID: qwn823q3hsp7t07v1fudufwjd
 Managers: 22
 Nodes: 22
 Default Address Pool: 10.0.0.0/8  
 SubnetSize: 24
 Orchestration:
  Task History Retention Limit: 5
 Raft:
  Snapshot Interval: 10000
  Number of Old Snapshots to Retain: 0
  Heartbeat Tick: 1
  Election Tick: 10
 Dispatcher:
  Heartbeat Period: 5 seconds
 CA Configuration:
  Expiry Duration: 3 months
  Force Rotate: 0
 Autolock Managers: false
 Root Rotation In Progress: false
 Node Address: 10.142.0.8
 Manager Addresses:
  10.142.0.10:2377
  10.142.0.11:2377
  10.142.0.12:2377
  10.142.0.13:2377
  10.142.0.14:2377
  10.142.0.15:2377
  10.142.0.16:2377
  10.142.0.17:2377
  10.142.0.18:2377
  10.142.0.19:2377
  10.142.0.20:2377
  10.142.0.21:2377
  10.142.0.22:2377
  10.142.0.23:2377
  10.142.0.2:2377
  10.142.0.4:2377
  10.142.0.5:2377
  10.142.0.6:2377
  10.142.0.6:2377
  10.142.0.7:2377
  10.142.0.8:2377
  10.142.0.8:2377
  10.142.0.9:2377
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 9754871865f7fe2f4e74d43e2fc7ccd237edcbce
runc version: 09c8266bf2fcf9519a651b04ae54c967b9ab86ec
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.9.0-8-amd64
Operating System: Debian GNU/Linux 9 (stretch)
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 29.46GiB
Name: app12
ID: YPYP:VQ7X:QCZE:EW5H:34JH:4BOV:AOX6:JA4T:E6FF:WXYE:GHCP:H7IE
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine

WARNING: No swap limit support
#

Please advise.