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Using Apotram to alleviate problems in distributed database systems

机译:使用Apotram减轻分布式数据库系统中的问题

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Communication and node failures can cause serious problems for distributed database systems (DDBSs). In particular, blocking is an inevitable problem when atomic commit protocols are used. This paper shows that blocking can be a less severe problem with lenient isolation Apotram transactions. In the proposed scheme a blocked transaction can make its locked data available to other readers in a controlled fashion. The lenient isolation properties also make more generous time-out limits as well as elaborate commit, termination, and recovery protocols feasible. This is a foundation for DDBSs that can provide different semantics to different application domains, thereby making true DDBS functionality attractive to distributed computing applications that currently use ad hoc solutions. It is also discussed how DDBS applications can take advantage of lenient isolation Apotram transactions.
机译:通信和节点故障可能导致分布式数据库系统(DDBS)出现严重问题。特别地,当使用原子提交协议时,阻塞是不可避免的问题。本文显示,宽容隔离Apotram事务可以使阻塞问题变得不那么严重。在提出的方案中,被阻止的事务可以以受控方式使其锁定的数据可供其他读取器使用。宽大的隔离属性还使超时限制更加宽泛,并且详尽的提交,终止和恢复协议也可行。这是DDBS的基础,可以为不同的应用程序域提供不同的语义,从而使真正的DDBS功能对当前使用临时解决方案的分布式计算应用程序具有吸引力。还讨论了DDBS应用程序如何利用宽大的隔离Apotram事务。

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