F. Jahanian and W. L. Moran Jr. Strong, weak and hybrid group membership. In Proc. of the 2 nd workshop on the management of replicated data, 1992.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....in the face of member failures and new members joining the group, while group communication defines the desired semantics of message delivery amongst group members, e.g. reliability, message ordering and time of delivery. Both issues have been extensively studied in the current literature, e.g. [7, 9, 13, 17]. However, the impact of host mobility on process groups has not been considered to date. It is our thesis that when groups consists of mobile hosts, mobility of members introduce a fundamentally new aspect to process groups, namely group location. Group location is defined as the set of current ....

F. Jahanian and W. L. Moran Jr. Strong, weak and hybrid group membership. In Proc. of the 2 nd workshop on the management of replicated data, 1992.

....ordered with respect to all regular messages. The Psync system possesses a membership mechanism based on causally ordered messages [45] This membership protocol preserves causal order between membership changes and regular messages, but does not guarantee virtual synchrony. Jahanian et al. [31] provide a suite of membership protocols, unrelated to multicast message ordering. In the Weak Membership of [31] there is no guarantee that all the members see a certain membership installation. This protocol simply assures that if the communication is timely and there are no faults, then the ....

....ordered messages [45] This membership protocol preserves causal order between membership changes and regular messages, but does not guarantee virtual synchrony. Jahanian et al. 31] provide a suite of membership protocols, unrelated to multicast message ordering. In the Weak Membership of [31], there is no guarantee that all the members see a certain membership installation. This protocol simply assures that if the communication is timely and there are no faults, then the membership will be in consensus. In periods of instability, the weak membership view might diverge at different ....

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F. Jahanian and W. Moran. Strong, Weak and Hybrid Group Membership. In IEEE Workshop on Management of Replicated Data, pages 34--38, 1992.

....hosts into multicast groups and track the locations of MHs on a per group basis. The concept of aggregating a related set of processes hosts into a group has been widely used in networks comprising solely of static hosts, e.g. to provide message ordering abstractions [16] to handle failures [15, 26], and for network layer routing of multicast messages [17] However, host mobility introduces a new aspect to group communication, viz. location management at the group level. Location of a static host never changes and therefore, the association between its location and its host id is an ....

F. Jahanian and W. L. Moran Jr. Strong, weak and hybrid group membership. In Proc. of the 2 nd workshop on the management of replicated data, 1992.

....communication : 1) at the lowest level, the FS component; on top of it, 2a) a component that defines new views, and 2b) a component that reliably multicasts messages within a view. 1 Introduction There have recently been several papers about membership services in asynchronous systems [2, 12, 16, 17, 18]. A membership service is responsible for giving each process (consistent) information about the operational processes in the system. A process calls this information its view of the system processes. A membership service typically reacts to process crashes or recoveries, leading it to define a ....

....in which processes may crash and the network may partition. However, despite network partitions, this membership service defines only majority views a unique, totally ordered sequence of views. Such a membership service is said to have linear semantics. ffl The membership services described in [1, 2, 12] consider the same failure scenario as above, but only define a partial order on the views. That is, if the system is partitioned in two (or more) subnetworks then two (or Paper appeared in IEEE Proc of the 23rd Annual Int. Symp. on Fault Tolerant Computing (FTCS23) Toulouse, June 22 24, ....

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F. Jahanian and W. M. Moran. Strong, Weak and Hybrid Group Membership. In Proceedings of the 2nd IEEE Workshopon the Management of Replicated Data, pages 34--38, November 1992.

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