liruhui opened a new issue, #25204:
URL: https://github.com/apache/shardingsphere/issues/25204
```
mysql: one master three slave
datasourcediscovery+dynamic-readwrite-split
shardingsphere 5.3.1
````
## 1. yaml-config
```yaml
dataSources:
write:
dataSourceClassName: com.zaxxer.hikari.HikariDataSource
driverClassName: com.mysql.cj.jdbc.Driver
jdbcUrl: jdbc:mysql://192.168.191.122:3306/aaa?serverTimezone=UTC
username: root
password: 11111
read_0:
dataSourceClassName: com.zaxxer.hikari.HikariDataSource
driverClassName: com.mysql.cj.jdbc.Driver
jdbcUrl: jdbc:mysql://192.168.191.122:3307/aaa?serverTimezone=UTC
username: root
password: 11111
read_1:
dataSourceClassName: com.zaxxer.hikari.HikariDataSource
driverClassName: com.mysql.cj.jdbc.Driver
jdbcUrl: jdbc:mysql://192.168.191.122:3308/aaa?serverTimezone=UTC
username: root
password: 11111
read_2:
dataSourceClassName: com.zaxxer.hikari.HikariDataSource
driverClassName: com.mysql.cj.jdbc.Driver
jdbcUrl: jdbc:mysql://192.168.191.122:3309/aaa?serverTimezone=UTC
username: root
password: 11111
rules:
- !READWRITE_SPLITTING
dataSources:
abc:
dynamicStrategy:
autoAwareDataSourceName: xyz
loadBalancerName: balancer
loadBalancers:
balancer:
type: ROUND_ROBIN
- !DB_DISCOVERY
dataSources:
xyz:
dataSourceNames:
- write
- read_0
- read_1
- read_2
discoveryHeartbeatName: myBeart
discoveryTypeName: myType
discoveryHeartbeats:
myBeart:
props:
keep-alive-cron: '0/5 * * * * ?'
discoveryTypes:
myType:
type: MySQL.NORMAL_REPLICATION
props:
delay-milliseconds-threshold: 3000
````
## 2: problem description
```
When the slave machine is down, it will also query the down slave machine.
```
## 3. Official document
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