WillemJiang commented on issue #643: 分布式事务优雅shut down服务问题 URL: https://github.com/apache/servicecomb-pack/issues/643#issuecomment-605832355 你的问题场景能具体描述一下吗？如果是分布式事务参与者服务实例退出，Omega是需要在Alpha注销的。目前Alpha在调用Omega的补偿方法是通过CompositeOmegaCallback中的[compensate方法](https://github.com/apache/servicecomb-pack/blob/master/alpha/alpha-core/src/main/java/org/apache/servicecomb/pack/alpha/core/CompositeOmegaCallback.java#L41)， 现在的实现还是绑定了具体的实例， 针对你的问题是可以进行相关的扩展加载不同实例的选择。
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