zjcnb opened a new issue #14112:
URL: https://github.com/apache/shardingsphere/issues/14112
When I start the proxy successfully, and then I start the jdbc, an exception
occurs on the proxy side.
### Which version of ShardingSphere did you use?
`master`
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
` ShardingSphere-Proxy `and `ShardingSphere-JDBC`
### Expected behavior
No error message.
### Actual behavior
```
Exception thrown by subscriber method
renew(org.apache.shardingsphere.mode.manager.cluster.coordinator.registry.config.event.rule.RuleConfigurationsChangedEvent)
on subscriber
org.apache.shardingsphere.mode.manager.cluster.coordinator.ClusterContextManagerCoordinator@71370fec
when dispatching event:
org.apache.shardingsphere.mode.manager.cluster.coordinator.registry.config.event.rule.RuleConfigurationsChangedEvent@904939b
java.lang.NullPointerException
at
org.apache.shardingsphere.dbdiscovery.mgr.MGRDatabaseDiscoveryType.findPrimaryDataSourceURL(MGRDatabaseDiscoveryType.java:143)
at
org.apache.shardingsphere.dbdiscovery.mgr.MGRDatabaseDiscoveryType.determinePrimaryDataSource(MGRDatabaseDiscoveryType.java:134)
at
org.apache.shardingsphere.dbdiscovery.mgr.MGRDatabaseDiscoveryType.updatePrimaryDataSource(MGRDatabaseDiscoveryType.java:123)
at
org.apache.shardingsphere.dbdiscovery.rule.DatabaseDiscoveryRule.findMasterSlaveRelation(DatabaseDiscoveryRule.java:128)
at
org.apache.shardingsphere.dbdiscovery.rule.DatabaseDiscoveryRule.<init>(DatabaseDiscoveryRule.java:85)
at
org.apache.shardingsphere.dbdiscovery.rule.DatabaseDiscoveryRule.<init>(DatabaseDiscoveryRule.java:73)
at
org.apache.shardingsphere.dbdiscovery.rule.builder.DatabaseDiscoveryRuleBuilder.build(DatabaseDiscoveryRuleBuilder.java:46)
at
org.apache.shardingsphere.dbdiscovery.rule.builder.DatabaseDiscoveryRuleBuilder.build(DatabaseDiscoveryRuleBuilder.java:36)
at
org.apache.shardingsphere.infra.rule.builder.schema.SchemaRulesBuilder.buildRules(SchemaRulesBuilder.java:85)
at
org.apache.shardingsphere.infra.rule.builder.schema.SchemaRulesBuilder.buildRules(SchemaRulesBuilder.java:70)
at
org.apache.shardingsphere.mode.manager.ContextManager.buildChangedMetaDataContext(ContextManager.java:405)
at
org.apache.shardingsphere.mode.manager.ContextManager.alterRuleConfiguration(ContextManager.java:194)
at
org.apache.shardingsphere.mode.manager.cluster.coordinator.ClusterContextManagerCoordinator.renew(ClusterContextManagerCoordinator.java:121)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:87)
at
com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:144)
at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:72)
at
com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:30)
at
com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:67)
at
com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:108)
at com.google.common.eventbus.EventBus.post(EventBus.java:212)
at java.util.Optional.ifPresent(Optional.java:159)
at
org.apache.shardingsphere.mode.manager.cluster.coordinator.registry.GovernanceWatcherFactory.lambda$watch$0(GovernanceWatcherFactory.java:55)
at
org.apache.shardingsphere.mode.repository.cluster.zookeeper.CuratorZookeeperRepository.lambda$watch$1(CuratorZookeeperRepository.java:247)
at
org.apache.curator.framework.recipes.cache.TreeCacheListenerWrapper.sendEvent(TreeCacheListenerWrapper.java:71)
at
org.apache.curator.framework.recipes.cache.TreeCacheListenerWrapper.event(TreeCacheListenerWrapper.java:48)
at
org.apache.curator.framework.recipes.cache.CuratorCacheListenerBuilderImpl$2.lambda$event$0(CuratorCacheListenerBuilderImpl.java:149)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at
org.apache.curator.framework.recipes.cache.CuratorCacheListenerBuilderImpl$2.event(CuratorCacheListenerBuilderImpl.java:149)
at
org.apache.curator.framework.recipes.cache.CuratorCacheImpl.lambda$putStorage$6(CuratorCacheImpl.java:274)
at
org.apache.curator.framework.listen.MappingListenerManager.lambda$forEach$0(MappingListenerManager.java:92)
at
org.apache.curator.framework.listen.MappingListenerManager.forEach(MappingListenerManager.java:89)
at
org.apache.curator.framework.listen.StandardListenerManager.forEach(StandardListenerManager.java:89)
at
org.apache.curator.framework.recipes.cache.CuratorCacheImpl.lambda$callListeners$10(CuratorCacheImpl.java:293)
at
java.util.concurrent.CompletableFuture$AsyncRun.run$$$capture(CompletableFuture.java:1626)
at
java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
```
### Reason analyze (If you can)
### My configuration :
`Proxy config:`
```
schemaName: database_discovery_db
dataSources:
ds_0:
url:
jdbc:mysql://127.0.0.1:13306/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
connectionTimeoutMilliseconds: 3000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 50
minPoolSize: 1
ds_1:
url:
jdbc:mysql://127.0.0.1:13307/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
connectionTimeoutMilliseconds: 3000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 50
minPoolSize: 1
ds_2:
url:
jdbc:mysql://127.0.0.1:13308/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
connectionTimeoutMilliseconds: 3000
idleTimeoutMilliseconds: 50000
maxLifetimeMilliseconds: 1300000
maxPoolSize: 50
minPoolSize: 1
rules:
- !DB_DISCOVERY
dataSources:
pr_ds:
dataSourceNames:
- ds_0
- ds_1
- ds_2
discoveryHeartbeatName: mgr-heartbeat
discoveryTypeName: mgr
discoveryHeartbeats:
mgr-heartbeat:
props:
keepAliveCron: '0/5 * * * * ?'
discoveryTypes:
mgr:
type: MGR
props:
groupName: b13df29e-90b6-11e8-8d1b-525400fc3996
```
`JDBC config :`
```
## mybatis的配置
mybatis:
mapper-locations: classpath*:mapper/**/*Mapper.xml
type-aliases-package: com.shardingsphere
server:
port: 8899
spring:
shardingsphere:
props:
sql-show: true
datasource:
ds-0:
jdbc-url:
jdbc:mysql://127.0.0.1:13306/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
ds-1:
jdbc-url:
jdbc:mysql://127.0.0.1:13307/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
ds-2:
jdbc-url:
jdbc:mysql://127.0.0.1:13308/demo_primary_ds?serverTimezone=UTC&useSSL=false
username: root
password: 123456
type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
names: ds-0, ds-1, ds-2
rules:
readwrite-splitting:
data-sources:
rd_rs:
auto-aware-data-source-name: pr_ds
database-discovery:
data-sources:
pr_ds:
data-source-names: ds-0, ds-1, ds-2
discovery-type-name: mgr
discovery-heartbeat-name: mgr-heartbeat
discovery-types:
mgr:
type: MGR
props:
groupName: b13df29e-90b6-11e8-8d1b-525400fc3996
discovery-heartbeats:
mgr-heartbeat:
props:
keepAliveCron: '0/5 * * * * ?'
mode:
type: Cluster
repository:
type: Zookeeper
props:
namespace: governance_ds
server-lists: localhost:2181
retryIntervalMilliseconds: 500
timeToLiveSeconds: 60
maxRetries: 3
operationTimeoutMilliseconds: 500
overwrite: false
```
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