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arXiv 2203.06012cs.DC
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匿名网络中的快照稳定任务

Snap-Stabilizing Tasks in Anonymous Networks

Emmanuel Godard

摘要:

我们考虑了匿名网络中的快照稳定算法。自稳定算法是众所周知的容错算法:自稳定算法最终将从任意瞬时故障中恢复。另一方面,如果一个算法可以承受任意初始值并立即满足其安全性要求,则该算法是快照稳定的。它是自稳定算法的子集。匿名网络中可使用自稳定算法解决的分布式任务已经由Boldi和Vigna在[BV02b]中描述。在本文中,我们将展示如何处理更苛刻的快照稳定算法与标准工具(不稳定)算法在匿名网络。我们给出了一个表征,其中的任务是可解决的快照稳定算法在匿名网络。我们还提出了一个快速稳定版本的Mazurkiewicz的枚举算法。这项工作暴露,从任务等价的角度来看,在匿名网络之间的自我或快照稳定的任务和分布式任务与各种终止检测要求的完整对应关系。

英文摘要:

We consider snap-stabilizing algorithms in anonymous networks. Self-stabilizing algorithms are well known fault tolerant algorithms : a self-stabilizing algorithm will eventually recover from arbitrary transient faults. On the other hand, an algorithm is snap-stabilizing if it can withstand arbitrary initial values and immediately satisfy its safety requirement. It is a subset of self-stabilizing algorithms. Distributed tasks that are solvable with self-stabilizing algorithms in anonymous networks have already been characterized by Boldi and Vigna in [BV02b]. In this paper, we show how the more demanding snap-stabilizing algorithms can be handled with standard tools for (not stabilizing) algorithms in anonymous networks. We give a characterization of which tasks are solvable by snap-stabilizing algorithms in anonymous networks. We also present a snap-stabilizing version of Mazurkiewicz' enumeration algorithm. This work exposes, from a task-equivalence point of view, the complete correspondence in anonymous networks between self or snap-stabilizing tasks and distributed tasks with various termination detection requirements.

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