2.8.17版本，微服务A首次调用B微服务时，为什么会加载B微服务的线程池信息

Bắt đầu với OperationMeta.init và ExecutorManager.findExecutorById, sau đó lần theo đường đi của CreateMicroserviceVersionEvent qua ServiceRegistryListener và MicroserviceMeta. So sánh cách cấu hình executor của schemaB được phân giải trong các microservices A và B, và tái hiện lỗi nếu có thể. Hoàn thành nghĩa là ghi lại liệu việc tra cứu này có được mong đợi hay không và xác định thay đổi cần thiết để khắc phục.

背景：

1. 微服务A首次调用微服务B，此时会有CreateMicroserviceVersionEvent事件，在微服务A中触发微服务B的元数据加载
2. 微服务B中定义针对schemaB指定了线程池executorB,但是在微服务A中并未指定

问题：

1. 此时微服务A中没有指定特殊线程池，但微服务A在查找schemaB的线程配置
   OperationMeta.init
   

2. 微服务A因为找不到schemaB线程池配置，而抛出异常

2025-01-13 18:59:40.905 [group0-1-thread-10] ERROR - [MicroserviceVersions.java:safeSetInstances:210] - [d2dfe91a-eeab-4f57-b731-8189a524f50a] - Failed to setInstances, appId=ApperySecdSerce, microserviceName=ApperySecdServippGallecDroi****Serve.
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'healthExecutor' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:874) ~[spring-beans-5.3.34.jar!/:5.3.34]
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1359) ~[spring-beans-5.3.34.jar!/:5.3.34]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.3.34.jar!/:5.3.34]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:209) ~[spring-beans-5.3.34.jar!/:5.3.34]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1171) ~[spring-context-5.3.34.jar!/:5.3.34]
at org.apache.servicecomb.foundation.common.utils.BeanUtils.getBean(BeanUtils.java:139) ~[foundation-common-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.executor.ExecutorManager.findExecutorById(ExecutorManager.java:118) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.executor.ExecutorManager.findByKey(ExecutorManager.java:109) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.executor.ExecutorManager.findExecutor(ExecutorManager.java:83) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.executor.ExecutorManager.findExecutor(ExecutorManager.java:57) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.definition.OperationMeta.init(OperationMeta.java:60) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.definition.SchemaMeta.initOperationMetas(SchemaMeta.java:63) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.definition.SchemaMeta.(SchemaMeta.java:53) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.definition.MicroserviceMeta.registerSchemaMeta(MicroserviceMeta.java:122) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.definition.ServiceRegistryListener.onCreateMicroserviceVersion(ServiceRegistryListener.java:105) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.foundation.common.event.SimpleSubscriber.syncDispatch(SimpleSubscriber.java:118) ~[foundation-common-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.foundation.common.event.SimpleSubscriber.dispatchEvent(SimpleSubscriber.java:107) ~[foundation-common-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.foundation.common.event.SimpleEventBus.post(SimpleEventBus.java:74) ~[foundation-common-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.consumer.MicroserviceVersion.(MicroserviceVersion.java:58) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.consumer.MicroserviceVersions.createMicroserviceVersion(MicroserviceVersions.java:259) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.consumer.MicroserviceVersions.lambda$setInstances$1(MicroserviceVersions.java:240) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) ~[?:1.8.0_402]
at org.apache.servicecomb.foundation.common.concurrent.ConcurrentHashMapEx.computeIfAbsent(ConcurrentHashMapEx.java:56) ~[foundation-common-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.consumer.MicroserviceVersions.setInstances(MicroserviceVersions.java:239) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.consumer.MicroserviceVersions.safeSetInstances(MicroserviceVersions.java:207) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.consumer.MicroserviceVersions.pullInstances(MicroserviceVersions.java:186) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.consumer.MicroserviceManager.getOrCreateMicroserviceVersions(MicroserviceManager.java:66) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.consumer.AppManager.getOrCreateMicroserviceVersions(AppManager.java:70) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.registry.DiscoveryManager.getOrCreateMicroserviceVersions(DiscoveryManager.java:141) ~[foundation-registry-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.SCBEngine.createMicroserviceReferenceConfig(SCBEngine.java:545) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.core.SCBEngine.createMicroserviceReferenceConfig(SCBEngine.java:516) ~[java-chassis-core-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.provider.springmvc.reference.CseClientHttpRequest.createRequestMeta(CseClientHttpRequest.java:184) ~[provider-springmvc-2.8.17.jar!/:2.8.17]
at org.apache.servicecomb.provider.springmvc.reference.CseClientHttpRequest.execute(CseClientHttpRequest.java:169) ~[provider-springmvc-2.8.17.jar!/:2.8.17]
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:782) ~[spring-web-5.3.34.jar!/:?]
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:717) ~[spring-web-5.3.34.jar!/:?]
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:637) ~[spring-web-5.3.34.jar!/:?]
at org.apache.servicecomb.provider.springmvc.reference.RestTemplateWrapper.exchange(RestTemplateWrapper.java:196) ~[provider-springmvc-2.8.17.jar!/:2.8.17]

疑问：
请帮解答下为什么需要在微服务A中查找微服务B的schemaB配置的线程池？