[#MXS-2190] CPU 100% when trying to connect using mysql client

I configure the maxscale like:

[maxscale]

threads=1

enable_root_user=true

[server1]

type=server

address=127.0.0.1

port=3306

protocol=MySQLBackend

[MySQL Monitor]

type=monitor

module=mysqlmon

servers=server1

user=root

passwd=123456

monitor_interval=10000

[Read-Only Service]

type=service

router=readconnroute

servers=server1

user=root

passwd=123456

router_options=slave

[Read-Write Service]

type=service

router=readwritesplit

servers=server1

user=root

passwd=123456

max_slave_connections=100%

[MaxAdmin Service]

type=service

router=cli

[Read-Only Listener]

type=listener

service=Read-Only Service

protocol=MySQLClient

port=4008

[Read-Write Listener]

type=listener

service=Read-Write Service

protocol=MySQLClient

port=4006

[MaxAdmin Listener]

type=listener

service=MaxAdmin Service

protocol=maxscaled

socket=default

then I run the:

bin/maxscale --user=maxscale -d &

I can see maxscale is ready from the log:

2018-11-27 00:16:37   notice : Listening for connections at ::|4008 with protocol MySQL

2018-11-27 00:16:37   notice : [MySQLAuth] [Read-Write Service] Loaded 2 MySQL users for listener Read-Write Listener.

2018-11-27 00:16:37   notice : Listening for connections at ::|4006 with protocol MySQL

2018-11-27 00:16:37   notice : Listening for connections at /tmp/maxadmin.sock with protocol MaxScale Admin

2018-11-27 00:16:37   notice : MaxScale started with 1 server threads.

2018-11-27 00:16:37   notice : Started MaxScale log flusher.

2018-11-27 00:16:38   notice : Server changed state: server1[127.0.0.1:3306]: new_master. [Running] -> [Master, Running]

2018-11-27 00:16:38   notice : [mysqlmon] A Master Server is now available: 127.0.0.1:3306

However, when I run:

./bin/mysql -uroot -p123456 -h127.0.0.1 -P4006

the terminal only shows:

mysql: [Warning] Using a password on the command line interface can be insecure.

and nothing else happens until I send a Ctr+C to terminate the mysql client.

Then the cpu usage remains 100% until I send kill -9 to the maxscale.

What did I miss? Please help.
Thanks

[MXS-2190] CPU 100% when trying to connect using mysql client Created: 2018-11-27 Updated: 2019-07-04 Resolved: 2019-07-04
Status:	Closed
Project:	MariaDB MaxScale
Component/s:	N/A
Affects Version/s:	2.1.2
Fix Version/s:	N/A