RUcore: Rutgers University Community Repository
Wayfinder
Descriptive
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Text
TitleInfo
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Title
Wayfinder
SubTitle
a federated information sharing and management system
PartName
PartNumber
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Identifier
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ETD_2099
Identifier
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http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051894
Language
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eng
Genre
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theses
Subject
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(authority = RUETD)
Topic
Computer Science
Subject
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(authority = ETD-LCSH)
Topic
Database management
Subject
(ID = SBJ-3);
(authority = ETD-LCSH)
Topic
Information storage and retrieval systems
Abstract
The decreasing costs of computing devices, increases in connectivity, and improved performance are altering the computing environments of users in fundamental ways. Users are no longer restricted to operating single devices in isolation but rather distribute and access
information across many devices and develop complex sharing patterns among groups of users. Unfortunately, while these trends are significantly enriching the user's computing experience, they are also increasing the data management overhead as users must explicitly
reason about data placement and replication across multiple devices and logical sharing groups.
In this thesis, we present the Wayfinder file system, which was designed to simplify the management of information in federate systems. Wayfinder focuses on three critical management deficiencies present in most current federated environments: 1) the lack of a consistent view for stored information across devices, 2) the required manual management of replicated information, and 3) the limited search/ranking capability for finding relevant information.
The Wayfinder file system addresses these deficiencies by providing three synergistic abstractions: 1) a global namespace that is uniformly accessible across connected and disconnected operation, 2) a user-centric automatic availability management to ensure continuous access to information based on data-centric availability policies, and 3) a multi-dimensional fuzzy search framework that significantly
improves relevance ranking. We will show that these abstractions simplify the management burden by requiring users to reason only about the data and its properties while ignoring the underlying physical
complexities of the system.
Underlying all three abstractions is a common implementation layer that adheres to three principles. First, any subset of nodes in a Wayfinder community can interact normally when they are interconnected, regardless of the membership of the subset. Second,
all protocols and interactions are tolerant of a weakly consistent model allowing them to suffer unexpected devices departures. Finally, devices are assumed to be owned by specific users and so should prioritize the needs of their owners in the presence of resource
constraints, while using excess resources to benefit the community as a whole.
information across many devices and develop complex sharing patterns among groups of users. Unfortunately, while these trends are significantly enriching the user's computing experience, they are also increasing the data management overhead as users must explicitly
reason about data placement and replication across multiple devices and logical sharing groups.
In this thesis, we present the Wayfinder file system, which was designed to simplify the management of information in federate systems. Wayfinder focuses on three critical management deficiencies present in most current federated environments: 1) the lack of a consistent view for stored information across devices, 2) the required manual management of replicated information, and 3) the limited search/ranking capability for finding relevant information.
The Wayfinder file system addresses these deficiencies by providing three synergistic abstractions: 1) a global namespace that is uniformly accessible across connected and disconnected operation, 2) a user-centric automatic availability management to ensure continuous access to information based on data-centric availability policies, and 3) a multi-dimensional fuzzy search framework that significantly
improves relevance ranking. We will show that these abstractions simplify the management burden by requiring users to reason only about the data and its properties while ignoring the underlying physical
complexities of the system.
Underlying all three abstractions is a common implementation layer that adheres to three principles. First, any subset of nodes in a Wayfinder community can interact normally when they are interconnected, regardless of the membership of the subset. Second,
all protocols and interactions are tolerant of a weakly consistent model allowing them to suffer unexpected devices departures. Finally, devices are assumed to be owned by specific users and so should prioritize the needs of their owners in the presence of resource
constraints, while using excess resources to benefit the community as a whole.
PhysicalDescription
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electronic resource
Extent
xviii, 166 p. : ill.
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application/pdf
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text/xml
Note
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Ph.D.
Note
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Includes bibliographical references (p. 159-164)
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by Christopher Peery
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Peery
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Christopher
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1987-
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Christopher Peery
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Nguyen
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Thu
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chair
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Advisory Committee
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Thu Nguyen
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Martin
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Rich
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internal member
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Advisory Committee
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Rich Martin
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Marian
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Amélie
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internal member
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Advisory Committee
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Amélie Marian
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Dwarkadas
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Sandhya
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outside member
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Advisory Committee
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Sandhya Dwarkadas
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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school
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2009
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2009-10
Place
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xx
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Rutgers University Electronic Theses and Dissertations
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ETD
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Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier
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doi:10.7282/T32R3RVR
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
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The author owns the copyright to this work
Copyright
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Copyright protected
Notice
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Availability
Status
Open
Reason
Permission or license
Note
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Peery
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Christopher
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Christopher Peery
Affiliation
Rutgers University. Graduate School - New Brunswick
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Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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Technical
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ETD
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application/pdf
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application/x-tar
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1157120
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