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Posted to commits@servicecomb.apache.org by GitBox <gi...@apache.org> on 2018/12/17 13:57:40 UTC

[GitHub] wanghancai commented on issue #512: 服务重新注册成功后更新属性失败

wanghancai commented on issue #512: 服务重新注册成功后更新属性失败
URL: https://github.com/apache/servicecomb-service-center/issues/512#issuecomment-447854559
 
 
   SCB-1059的修改方式不能彻底解决问题：
   1、s.Heartbeat(ctx, &pb.HeartbeatRequest{ServiceId: instance.ServiceId, InstanceId: oldInstanceId}) 只在添加到发送心跳队列中，如果在操作etcd前发生了ttl，则leaseId会失效，导致心跳仍然失败，而且会是异常。从而仍然会导致注册成功，但服务实例不在的情况。
   2、如果实例在exit和heartbeat之间，ttl了并进入defect处理，此时心跳仍然无法恢复，仍然要下线，依就会出现服务重注册成功，但实例仍然不在线的问题。
   建议在注册时，直接查找到leaseID或重新生成leaseID，操作etcd来重置ttl能保证100%重成功。

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