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2. 发明授权

US5546582A Extension of two phase commit protocol to distributed participants 失效
标题翻译：将两阶段提交协议扩展到分布式参与者
公开(公告)号：US5546582A
公开(公告)日：1996-08-13
申请号：US384484
申请日：1995-02-02
申请人： Roger L. Brockmeyer , Richard Dievendorff , Daniel E. House , Earle H. Jenner , Margaret K. LaBelle , Michael G. Mall , Stuart L. Silen
发明人： Roger L. Brockmeyer , Richard Dievendorff , Daniel E. House , Earle H. Jenner , Margaret K. LaBelle , Michael G. Mall , Stuart L. Silen
IPC分类号： G06F13/00 , G06F9/46 , G06F11/14 , G06F12/00 , G06F15/16 , G06F15/177 , H04L29/08
CPC分类号： G06F17/30377
摘要： An extension of the two phase commit protocol allows distributed participation among physically distant agents independent of the communications mechanism being used in a data processing system. An extra stage of processing is added to the two phase commit protocol called End Phase One Processing (EPOP) which enables a distribution of the coordinator function across systems using any communication mechanism. EPOP is an extra stage in which a participant can receive control. In this extra stage, a participant flows two phase commit protocol sequences to distributed systems. The communication mechanism is used in such a way that it becomes part of a distributed coordinator. The coordinator itself does not need knowledge of other systems. The extra stage of processing is enabled by an operating system service called Enable End Phase One Exit Processing (EEPOEP). EEPOEP causes an extension of two phase commit protocol to be used on the issuing system. In this way, not only distributed databases can be supported, but also distributed users and distributed generic resource managers. A new response, called ABSTAIN, can be used by a resource manager in response to a PREPARE signal from the coordinator. This response from the resource manager to the coordinator indicates that the resource manager wants to continue to be involved with the unit of work two phase commit process but does not want to influence the final decision (i.e., COMMIT or BACKOUT) of the unit of work.
摘要翻译：两阶段提交协议的扩展允许独立于在数据处理系统中使用的通信机制的物理远程代理之间的分布式参与。一个额外的处理阶段被添加到称为终端一处理（EPOP）的两阶段提交协议中，这使得能够使用任何通信机制跨系统分配协调器功能。 EPOP是参与者可以接受控制的额外阶段。在这个额外的阶段，参与者将两阶段提交协议序列流向分布式系统。通信机制的使用方式使其成为分布式协调器的一部分。协调员本身不需要其他系统的知识。处理的额外阶段由称为启用结束一期退出处理（EEPOEP）的操作系统服务启用。 EEPOEP导致在发行系统上使用两阶段提交协议的扩展。这样，不仅可以支持分布式数据库，还可以分布式用户和分布式的通用资源管理器。一个称为ABSTAIN的新响应可以被资源管理器用来响应来自协调器的PREPARE信号。资源管理员对协调者的这种反应表明，资源管理器希望继续参与工作单元两阶段提交过程，但不想影响工作单元的最终决定（即COMMIT或BACKOUT）。

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