At present, the study of checkpointing points that the rollback recover of un-coordinated checkpointing is difficult to realize, and has less appilication in cluster system.

• 针对该问题，使用非协调式检查点设置协议消除同步操作，采用消息日志记录方式保证系统状态一致性，并利用线程后台执行方式达到透明性设置。