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From GitBox <...@apache.org>
Subject [GitHub] [dubbo] changwei0708 opened a new issue #8273: Upgrade Dubbo from 2.7.11 to 3.0.1 get RuntimeException: [source error] getExportedURLs() not found in org.apache.dubbo.registry.client.metadata.store.InMemoryWritableMetadataService
Date Mon, 12 Jul 2021 08:25:00 GMT

changwei0708 opened a new issue #8273:
URL: https://github.com/apache/dubbo/issues/8273


   - [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository
and believe that this is not a duplicate.
   - [x] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this
repository and believe that this is not a duplicate.
   
   ### Environment
   
   * Dubbo version: 3.0.1
   * Operating System version: Linux or Win
   * Java version: 1.8.201
   
   ### Steps to reproduce this issue
   
   Upgrade Dubbo from 2.7.11 to 3.0.1 get RuntimeException just like 
   ```
   [ERROR] -  [DUBBO] [source error] getExportedURLs() not found in org.apache.dubbo.registry.client.metadata.store.InMemoryWritableMetadataService,
dubbo version: 3.0.1, current host: 169.254.166.203
   java.lang.RuntimeException: [source error] getExportedURLs() not found in org.apache.dubbo.registry.client.metadata.store.InMemoryWritableMetadataService
   ```
   
   
   and I check another different between 2.7.x and 3.0.x  , it is the  class DubboBootstrap
 of 3.0.x  init InMemoryWritableMetadataService  when start , just like this :
   
   ```
   executorRepository.nextScheduledExecutor().scheduleAtFixedRate(() -> {
               InMemoryWritableMetadataService localMetadataService = (InMemoryWritableMetadataService)
WritableMetadataService.getDefaultExtension();
               localMetadataService.blockUntilUpdated();
               try {
                   ServiceInstanceMetadataUtils.refreshMetadataAndInstance(serviceInstance);
               } catch (Exception e) {
                   logger.error("Refresh instance and metadata error", e);
               }
           }, 0, ConfigurationUtils.get(METADATA_PUBLISH_DELAY_KEY, DEFAULT_METADATA_PUBLISH_DELAY),
TimeUnit.MILLISECONDS);
   ```
   
   in other word InMemoryWritableMetadataService  Is automatically initialized, Is it related
to this place?
   
   


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