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- W2153416979 abstract "MAPFS is a parallel file system integrated with a multiagent system responsible for the information retrieval [2]. The use of a multiagent system implies coordination among the agents such system consists of. The principal goal of the agents cooperation is the interaction among such agents for achieving a common objective in a distributed system. MAPFS consists of two subsystems: (i) the MAPFS FS, which provides the parallel file system functionality and (ii) the MAPFS MAS, responsible for the information retrieval. The MAPFS MAS is an independent subsystem, which provides support to the major subsystem (MAPFS FS) in three different areas: (i) access to the information: This feature is the main task of the MAPFS MAS and consists of the information retrieval. The information is stored in the I/O nodes (a set of disks distributed among several nodes); (ii) caching service: MAPFS takes advantage of the temporal and spatial locality of data stored in the servers. Inside the MAPFS MAS, there are agents which manage this feature. These agents are named cache agents; and (iii) Fault tolerance service:Data distribution through a set of disks makes the system more vulnerable. For this reason, MAPFS must provide the fault tolerance feature. When we talk about fault tolerance in this work, we refer to data availability. For managing it, fault tolerance agents from the MAPFS MAS are used. With the aim of achieving these goals, the MAPFS MAS is constituted by a set of agents which interact among them, that is, a multiagent system (MAS). On the other hand, the files are stored finally in several servers, which constitute the server-side of the underlying architecture. The grouping of servers from a logical point of view in MAPFS is denominated storage group. There are two hierarchies in MAPFS: (i) several file servers form a storage group and (ii) several agents (more precisely, a multiagent system) form the infrastructure that gives support to a server. Therefore, there are several MAS belonging to a storage group. In this sense, there are also two cooperation levels: (i) cooperation inside a MAS and (ii) cooperation between two different MAS. This paper describes the coordination features of MAPFS." @default.
- W2153416979 created "2016-06-24" @default.
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- W2153416979 date "2003-06-25" @default.
- W2153416979 modified "2023-09-26" @default.
- W2153416979 title "MAPFS_MAS: A Model of Interaction among Information Retrieval Agents" @default.
- W2153416979 cites W1535806662 @default.
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- W2153416979 doi "https://doi.org/10.1109/ccgrid.2002.1017135" @default.
- W2153416979 hasPublicationYear "2003" @default.
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