Issue 1:
I have searched the issues of this repository and believe that this is not a duplicate.

I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

Dubbo version: 2.6.5

Operating System version: xxx

Java version: xxx

Steps to reproduce this issue

1.open dubbo-cluster project；

2.go into package (com.alibaba.dubbo.rpc.cluster.configurator.override)

3.see class comments.

4. the content is "AbsentConfigurator",error.

Pls. provide [GitHub address] to reproduce this issue.

Expected Result

/**

OverrideConfigurator

*/

public class OverrideConfigurator extends AbstractConfigurator {

public OverrideConfigurator(URL url) {
super(url);
}

@Override
public URL doConfigure(URL currentUrl, URL configUrl) {
return currentUrl.addParameters(configUrl.getParameters());
}

}

Actual Result

/**

AbsentConfigurator

*/

public class OverrideConfigurator extends AbstractConfigurator {

public OverrideConfigurator(URL url) {
super(url);
}

@Override
public URL doConfigure(URL currentUrl, URL configUrl) {
return currentUrl.addParameters(configUrl.getParameters());
}

}

What actually happens?

If there is an exception, please attach the exception trace:

Just put your stack trace here!

Issue 2:
I have searched the issues of this repository and believe that this is not a duplicate.

I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

Dubbo version: 2.7.5

Operating System version: xxx

Java version: 1.8

Steps to reproduce this issue

升级完成启动报错

xxx

xxx

Pls. provide [GitHub address] to reproduce this issue.

Expected Result

What do you expected from the above steps？

Actual Result

What actually happens?

If there is an exception, please attach the exception trace:

org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists for /dubbo/com.xxx.readProduct.api.order.OTTService/consumers/consumer%3A%2F%2F192.168.0.105%2Fcom.xxxx.readProduct.api.order.OPTTTTService%3Fapplication%3Dxxxx-order-frontend-service%26category%3Dconsumers%26check%3Dfalse%26dubbo%3D2.0.2%26init%3Dfalse%26interface%3Dcom.xxx.readProduct.api.order.OTTService%26methods%3DqueryPharmacyBDinfo%2CgetPharmacyIdByCity%2CqueryPharmacyAddressByIdList%2CqueryPharmacyIdList%2CqueryByPharmacyIdAndDate%2CgetPharmacyIds%2CgetPharmacyById%2CqueryPharmacyCompanyInfo%2CqueryPharmacyAddressByCityList%2CgetPharmacyWithPTelList%2CqueryAllTypePharmacyList%2CqueryPharmacyById%2CqueryBatchPharmacyByPharmacyId%2CqueryPharmacyAddressById%2CqueryDeliverFeeInfo%2CgetPharmacyInfoList%26pid%3D24906%26release%3D2.7.5%26revision%3D3.0.0%26side%3Dconsumer%26sticky%3Dfalse%26timestamp%3D1593767278687%26version%3D3.0.0

at org.apache.zookeeper.KeeperException.create(KeeperException.java:119)

at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)

at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)

at org.apache.curator.framework.imps.CreateBuilderImpl$17.call(CreateBuilderImpl.java:1177)

at org.apache.curator.framework.imps.CreateBuilderImpl$17.call(CreateBuilderImpl.java:1158)

at org.apache.curator.connection.StandardConnectionHandlingPolicy.callWithRetry(StandardConnectionHandlingPolicy.java:64)

at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:100)

at org.apache.curator.framework.imps.CreateBuilderImpl.pathInForeground(CreateBuilderImpl.java:1155)

at org.apache.curator.framework.imps.CreateBuilderImpl.protectedPathInForeground(CreateBuilderImpl.java:605)

at org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:595)

at org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:573)

at org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:49)

at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.createEphemeral(CuratorZookeeperClient.java:101)

at org.apache.dubbo.remoting.zookeeper.support.AbstractZookeeperClient.create(AbstractZookeeperClient.java:87)

at org.apache.dubbo.registry.zookeeper.ZookeeperRegistry.doRegister(ZookeeperRegistry.java:128)

at org.apache.dubbo.registry.support.FailbackRegistry.register(FailbackRegistry.java:240)

at org.apache.dubbo.registry.ListenerRegistryWrapper.register(ListenerRegistryWrapper.java:57)

at org.apache.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:412)

at org.apache.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:396)

at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:73)

at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:151)

at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:70)

at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java)

at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:329)

at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:266)

at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:151)

at org.apache.dubbo.config.spring.ReferenceBean.getObject(ReferenceBean.java:68)

at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:178)

at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)

at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1636)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:254)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)

at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:522)

at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:496)

at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:627)

at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:171)

at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:318)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1269)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)

at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:522)

at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:496)

at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:627)

at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:171)

at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:318)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1269)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351)

at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1534)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1281)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)

at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)

at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:139)

at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:93)

Just put your stack trace here!