[2.0.x] ServiceChangeV1Task may dismiss service groupName in service name #5671
Description
Describe the bug
com.alibaba.nacos.naming.core.v2.upgrade.doublewrite.delay.ServiceChangeV1Task.ServiceChangeV1TaskProcessor#transfer
serviceV2.groupName is coming from serviceV1.groupName
However, serviceV1.groupName are always DEFAULT_GROUP when sync from other server, see com.alibaba.nacos.naming.consistency.ephemeral.distro.DistroConsistencyServiceImpl#processData(byte[]):
Loggers.DISTRO.info("creating service {}", entry.getKey());
Service service = new Service();
String serviceName = KeyBuilder.getServiceName(entry.getKey());
String namespaceId = KeyBuilder.getNamespace(entry.getKey());
service.setName(serviceName);
service.setNamespaceId(namespaceId);
service.setGroupName(Constants.DEFAULT_GROUP); // <----- here
Expected behavior
Using NamingUtils.getGroupName(service.getName()) first to get groupName.