restart mysql node causing sql err: the data source[172.100.9.5:3306] can't reached. Please check the dataHost status

[langkaixin]

• dble version： 5.6.29-dble-9.9.9.9-ddb1c090d0ec600948dcffebca1fc9fa028badcb-20200115071303
• preconditions ：
  no
• configs：

schema.xml

rule.xml

server.xml

• steps：

step1.

mysql -utest -p111111 -P8066
mysql> use schema1;
mysql> select * from sharding_4_t1;
Empty set (0.04 sec)

step2.

[root@mysql-master1 opt]# /usr/local/mysql/support-files/mysql.server stop
Shutting down MySQL.... SUCCESS!
[root@mysql-master1 opt]# /usr/local/mysql/support-files/mysql.server start
Starting MySQL. SUCCESS!

step3.

wait a minute

step4.

mysql -utest -p111111 -P8066
mysql> use schema1;
mysql> select * from sharding_4_t1;
ERROR 3009 (HY000): java.io.IOException: the data source[172.100.9.5:3306] can't reached. Please check the dataHost status

• expect result：
  1.no error in step3
• real result：
  1.report error : the data source[172.100.9.5:3306] can't reached. Please check the dataHost status
• supplements：
  1.

[irene-coming]

verified on dble: 5.6.29-dble-9.9.9.9-1dac35e8f0c5b8cd09b13c2a027aaf0d32113306-20200117021241