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arXiv 1705.04835cs.DC
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哪种广播抽象捕获$k$ -集协议?

Which Broadcast Abstraction Captures $k$-Set Agreement?

Damien Imbs, Achour Mostéfaoui, Matthieu Perrin, Michel Raynal

摘要:

众所周知,共识(一套协议)和全序广播在容易发生进程崩溃故障的异步系统中是等价的。考虑到无等待系统,本文提出并回答了以下问题:“捕获”$k$集协议的通信抽象是什么?为此,它引入了一种新的广播通信抽象,称为$k$ -BO-广播,它限制了对已经广播的消息的本地传递的不一致($1$ -BO-广播归结为全顺序广播)。因此,在这个上下文中,$k=1$不是一个特殊的数,而只是一个递增整数序列中的第一个整数。这建立了一个新的“对应关系”之间的分布式协议的问题和通信的抽象,这丰富了我们的理解的关系连接的容错分布式计算的基本问题。

英文摘要:

It is well-known that consensus (one-set agreement) and total order broadcast are equivalent in asynchronous systems prone to process crash failures. Considering wait-free systems, this article addresses and answers the following question: which is the communication abstraction that "captures" $k$-set agreement? To this end, it introduces a new broadcast communication abstraction, called $k$-BO-Broadcast, which restricts the disagreement on the local deliveries of the messages that have been broadcast ($1$-BO-Broadcast boils down to total order broadcast). Hence, in this context, $k=1$ is not a special number, but only the first integer in an increasing integer sequence. This establishes a new "correspondence" between distributed agreement problems and communication abstractions, which enriches our understanding of the relations linking fundamental issues of fault-tolerant distributed computing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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