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Proceedings Paper

Object-oriented framework for adaptation in a DFS
Author(s): Arvind Kumar; Mitchell D. Theys
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Paper Abstract

Today s large diversity of network resources, computing resources and heterogeneous devices can lead to a mismatch between network-capacity and the volume of data transferred, or between devices and data (consider transferring a large video clip to a handheld over a congested wireless network). Traditional distributed file systems including NFS [1], AFS [2], and Coda [3], fail to address this issue, as they cannot adapt their services according to environmental constraints. We address the problem of adaption in a DFS by modeling the file system as an object-oriented framework using persistent distributed objects. Files (persistent objects) in the DFS participate when the system reacts to environmental constraints (e.g. network congestion) and/or user-imposed constraints (e.g. security). For instance, when the user wants to play a video clip stored on a remote server with an untrusted network in between, the system chooses a version of the clip appropriate to the current network traffic, encrypts it over the wire, and plays it on the client. Further, the behavior of our general-purpose framework can also be specialized according to specific application requirements, to implement domain-specific optimizations (e.g. modifying concurrent- write semantics).

Paper Details

Date Published: 25 June 2002
PDF: 10 pages
Proc. SPIE 4863, Java/Jini Technologies and High-Performance Pervasive Computing, (25 June 2002); doi: 10.1117/12.472934
Show Author Affiliations
Arvind Kumar, Univ. of Illinois/Chicago (United States)
Mitchell D. Theys, Univ. of Illinois/Chicago (United States)

Published in SPIE Proceedings Vol. 4863:
Java/Jini Technologies and High-Performance Pervasive Computing
Guang R. Gao; Ken Arnold; Guang R. Gao; Sudipto Ghosh, Editor(s)

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