• I have searched the issues of this repository and believe that this is not a duplicate.

Ⅰ. Issue Description

mysql databases has table over 500；
the springboot starting in create sharding-jdbc's datasource enter into deadlock;
because sharding-jdbc query database's table metadata for too long time,
the seata create RMclient which start thread in delay 60s,

timerExecutor.scheduleAtFixedRate(new Runnable() {
            @Override
            public void run() {
                clientChannelManager.reconnect(getTransactionServiceGroup());
            }
        }, SCHEDULE_DELAY_MILLS, SCHEDULE_INTERVAL_MILLS, TimeUnit.MILLISECONDS);

the thread get bean into spring container ,waiting lock in singleObject, but the springboot start-main-thread hold this lock

I have to update source code,update SCHEDULE_DELAY_MILLS from 60s to 180s,and start success
io.seata.core.rpc.netty.AbstractNettyRemotingClient.class
private static final long SCHEDULE_DELAY_MILLS = 60 * 1000L;

how easier config SCHEDULE_DELAY_MILLS ,do not modify source code？

stack log:

Found one Java-level deadlock:

"timeoutChecker_2_1":
waiting to lock monitor 0x0000023ff219ab08 (object 0x00000007910e81a8, a java.lang.Class),
which is held by "timeoutChecker_1_1"
"timeoutChecker_1_1":
waiting to lock monitor 0x0000023fedde9908 (object 0x00000006cac04dd8, a java.util.concurrent.ConcurrentHashMap),
which is held by "main"
"main":
waiting to lock monitor 0x0000023ff219ab08 (object 0x00000007910e81a8, a java.lang.Class),
which is held by "timeoutChecker_1_1"

Java stack information for the threads listed above:

"timeoutChecker_2_1":
at io.seata.discovery.registry.RegistryFactory.getInstance(RegistryFactory.java:42)

• waiting to lock <0x00000007910e81a8> (a java.lang.Class for io.seata.discovery.registry.RegistryFactory)
  at io.seata.core.rpc.netty.NettyClientChannelManager.getAvailServerList(NettyClientChannelManager.java:231)
  at io.seata.core.rpc.netty.NettyClientChannelManager.reconnect(NettyClientChannelManager.java:166)
  at io.seata.core.rpc.netty.AbstractNettyRemotingClient$1.run(AbstractNettyRemotingClient.java:114)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
  at java.lang.Thread.run(Thread.java:748)
  "timeoutChecker_1_1":
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getSingletonFactoryBeanForTypeCheck(AbstractAutowireCapableBeanFactory.java:986)
• waiting to lock <0x00000006cac04dd8> (a java.util.concurrent.ConcurrentHashMap)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryBean(AbstractAutowireCapableBeanFactory.java:884)
  at org.springframework.beans.factory.support.AbstractBeanFactory.isTypeMatch(AbstractBeanFactory.java:619)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:536)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:503)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:480)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:473)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveNamedBean(DefaultListableBeanFactory.java:1159)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveBean(DefaultListableBeanFactory.java:420)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:349)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:342)
  at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1127)
  at io.seata.spring.boot.autoconfigure.provider.SpringBootConfigurationProvider.get(SpringBootConfigurationProvider.java:93)
  at io.seata.spring.boot.autoconfigure.provider.SpringBootConfigurationProvider.access$100(SpringBootConfigurationProvider.java:43)
  at io.seata.spring.boot.autoconfigure.provider.SpringBootConfigurationProvider$1.intercept(SpringBootConfigurationProvider.java:56)
  at io.seata.config.FileConfiguration$$EnhancerByCGLIB$$862af1eb.getConfig()
  at io.seata.discovery.registry.RegistryFactory.buildRegistryService(RegistryFactory.java:52)
  at io.seata.discovery.registry.RegistryFactory.getInstance(RegistryFactory.java:43)
• locked <0x00000007910e81a8> (a java.lang.Class for io.seata.discovery.registry.RegistryFactory)
  at io.seata.core.rpc.netty.NettyClientChannelManager.getAvailServerList(NettyClientChannelManager.java:231)
  at io.seata.core.rpc.netty.NettyClientChannelManager.reconnect(NettyClientChannelManager.java:166)
  at io.seata.core.rpc.netty.AbstractNettyRemotingClient$1.run(AbstractNettyRemotingClient.java:114)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
  at java.lang.Thread.run(Thread.java:748)
  "main":
  at io.seata.discovery.registry.RegistryFactory.getInstance(RegistryFactory.java:42)
• waiting to lock <0x00000007910e81a8> (a java.lang.Class for io.seata.discovery.registry.RegistryFactory)
  at io.seata.core.rpc.netty.NettyClientChannelManager.getAvailServerList(NettyClientChannelManager.java:231)
  at io.seata.core.rpc.netty.NettyClientChannelManager.reconnect(NettyClientChannelManager.java:166)
  at io.seata.core.rpc.netty.RmNettyRemotingClient.registerResource(RmNettyRemotingClient.java:195)
  at io.seata.rm.AbstractResourceManager.registerResource(AbstractResourceManager.java:121)
  at io.seata.rm.datasource.DataSourceManager.registerResource(DataSourceManager.java:120)
  at io.seata.rm.DefaultResourceManager.registerResource(DefaultResourceManager.java:114)
  at io.seata.rm.datasource.DataSourceProxy.init(DataSourceProxy.java:108)
  at io.seata.rm.datasource.DataSourceProxy.(DataSourceProxy.java:94)
  at io.seata.rm.datasource.DataSourceProxy.(DataSourceProxy.java:79)
  at org.apache.shardingsphere.transaction.base.seata.at.SeataATShardingTransactionManager.init(SeataATShardingTransactionManager.java:68)
  at org.apache.shardingsphere.transaction.ShardingTransactionManagerEngine.init(ShardingTransactionManagerEngine.java:67)
  at org.apache.shardingsphere.shardingjdbc.jdbc.core.context.ShardingRuntimeContext.(ShardingRuntimeContext.java:52)
  at org.apache.shardingsphere.shardingjdbc.jdbc.core.datasource.ShardingDataSource.(ShardingDataSource.java:54)
  at org.apache.shardingsphere.shardingjdbc.api.ShardingDataSourceFactory.createDataSource(ShardingDataSourceFactory.java:48)
  at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration.shardingDataSource(SpringBootConfiguration.java:103)
  at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$124d36df.CGLIB$shardingDataSource$0()
  at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$124d36df$$FastClassBySpringCGLIB$$34a71f7b.invoke()
  at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
  at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331)
  at org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration$$EnhancerBySpringCGLIB$$124d36df.shardingDataSource()
  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 org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
  at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650)
  at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
  at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
  at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$159/606593028.getObject(Unknown Source)
  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
• locked <0x00000006cac04dd8> (a java.util.concurrent.ConcurrentHashMap)
  at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
  at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
  at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
  at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:884)
  at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:788)
  at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:538)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
  at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
  at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$159/606593028.getObject(Unknown Source)
  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
• locked <0x00000006cac04dd8> (a java.util.concurrent.ConcurrentHashMap)
  at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
  at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
  at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1509)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1404)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
  at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
  at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$159/606593028.getObject(Unknown Source)
  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
• locked <0x00000006cac04dd8> (a java.util.concurrent.ConcurrentHashMap)
  at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
  at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
  at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
  at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
  at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
  at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
  at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
  at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$159/606593028.getObject(Unknown Source)
  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
• locked <0x00000006cac04dd8> (a java.util.concurrent.ConcurrentHashMap)
  at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
  at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
  at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
  at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
  at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
  at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
  at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
  at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$159/606593028.getObject(Unknown Source)
  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
• locked <0x00000006cac04dd8> (a java.util.concurrent.ConcurrentHashMap)
  at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
  at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
  at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
  at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
• locked <0x00000006ca8ea9f8> (a java.lang.Object)
  at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
  at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
  at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
  at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
  at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
  at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
  at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
  at com.aixin.iteaching.school.SchoolApplication.main(SchoolApplication.java:17)

Found 1 deadlock.

• JDK version : 1.8
• OS : win
• Others: springboot、nacos、dubbo、seata、sharding-jdbc、mysql...